| Page 1 of 2 | 1 | 2 |
|
|
|
Mysterious internet/ethernet issue (kinda need testing/connection/communicationservice to diagnose it ???)
This is a bit of a long shot, but maybe somebody has seen something like this, I am thinking not but ya never know.
Situation is really weird: My PC can play World of Warships fine, Company of Heroes via Game Ranger fine. It can browse/websurf the internet fine. It can even connect to another laptop over same ethernet port by pulling out internet cable modem cable and reconnecting to laptop etc. But for whatever reason: If computers from the outside try to connect to my PC it's not working. Vice versa it's also not working ?!? Maybe cause those devices are natted. But as far as I know my PC is not NATTED. Or it's some strange/new ISP kind of NAT that behaves oddly. Like only big companies/servers are still reachable and not consumer PCs. As far as I can tell my PC does have a public IP address. But apperently this is not working/enough anymore ?! Very strange. I plan on replacing my PC with a laptop, just as a test, to see if it's the PC at fault and it's software, or if something more strange is going on ?! What kind of electrical defect/or wear and tear could produce such a weird result ?! (One thing which is on my mind is something different, a hacked or misconfigured/corrupted modem, which somehow blocks this). For now I will keep assuming that everything is just fine on my PC and that it's the outside world that simply can't connect to my PC. Though even laptop PC sometimes behaves weird as far as I can recall, but usually I can get it to work (?!) though now I am not so sure anymore. It's not stupid firewall cause this is turned off and would usually allow anyway... it's something more strange. I will try to get to the bottom of it though. Also is there any service out there on the internet where there is a public computer that can send some traffic to a specific tcp or udp port ?! Just to see if my PC can actually receive this ?! That would be very helpfull. Bonus would be if I can then send something back to it's udp or tcp port to see if that computer can also receive from me... and finally it reports this via a website/html or so... or even e-mail or so. Bye, Skybuck. |
Mysterious internet/ethernet issue (kinda needtesting/connection/communication service to diagnose it ???)
Or, you did this.
ISP ------ modem ------- single_computer ^ This But I am starting to wonder if it's maybe this: ISP - evil ISP NAT ---- modem ----- single computer or ISP ---- hacked modem ----- single computer or ISP ---- accidentally misconfigured modem ---- single computer or ISP ---- very weird defect modem ---- single computer or ISP ---- locked modem ---- defect single computer And then there are more possibilities :) What I kinda need is somebody that: 1. A knows about internet/tcp/udp ports. 2. Either has a public IP or knows how to port forward. 3. Has some time and patience to test, now or even multiple times on different days or hours to allow me to swap out hardware if necessary and it probably will be necessary to get to the bottom of this or a simple test may just prove that everything is great on my side and it's just other computers/ISPs/users ****ing up. Plus 4. Wanting to earn some coins ! Paul I will make you a once in a life time offer potentially. If you help me test this issue, I will 100% reward with you with some crypto coins ! These crypto coins are not worth a lot yet, but perhaps in the future it will make you richer than you thought ! =D Does that sound like a nice deal or what ? If we do this I suggest we use "discord" to open up a server and use it as our chat engine... that should make it easy and allow us to communicate even share screenshots perhaps and so forth. Think about it and let me know if you want to earn some crypto coins and perhaps infinite fame of having helped out Skybuck with a really strange problem ?! Or perhaps it's not a strange problem... ;) If this got your X-Files blood pumping... then you the right guy ! =D Bye, Skybuck. |
Mysterious internet/ethernet issue (kinda needtesting/connection/communication service to diagnose it ???)
I have an idea, I could try and program a small little php script that sends some udp packets to my computer, maybe later even a full tcp/ip connection.
Not entirely sure if my webhoster allows this but I think so... Now this my not shed a lot of light if problem is on my side, but it's worth a shot. Bye, Skybuck. (My deal/proposal with you is still valid though :)) |
Mysterious internet/ethernet issue (kinda needtesting/connection/communication service to diagnose it ???)
Today I decided to call Ziggo, a company who delivers TV, Internet and Telephony.
I originally called to report a problem with my Analog Television !!! One of the channels "veronique HD/Disney XD" was displaying snow over the screen. A cartoon was playing covered in mild snow. The guy on the phone was very helpfull and very motivated to try and solve my problem to my great surprise ! =D I did not believe they could solve my problem. I thought they would laugh at me for not using digital television, I thought they might tell me to simply switch to digital television or blame it on me and my TV. But the exact opposite happened. First he asked me to check the tv channel, it was on a different number then their TV card but that was ok. I also reported mild snow on another channel. Then the guy asked me to check the white cable. I checked it it was firm... all other TV channels play/display well. Then he asked me to check the "splitter box" which splits the signal into two or three. One for television, one for internet, and maybe one for radio or something. I told him the model is CTU 01. He asked if I was sure if it was not CTUM. I re-checked and told him: No it really is a 3 letter thing CTU 01. Then I had to wait/hold for a moment, after a while he came back. He told me they were going to send me a new splitter and a new cable to my modem. This new splitter can be directly connected to the wall socket where the green cable comes in and also a little white box is. Now before I was going to hang up I told him about my recent internet experiments. Where I tried to have a computer on the internet connect to my computer. I also told him this failed recently... and I also told him my previous contact with ziggo a while ago could not enter my cable modem menu ?! To my great surprise he said: "I can access your cable modem just fine" ! I was stunned that this TV guy was also capable of checking internet at the same time LOL. So this was a double surprise. But now comes the best part: The guy says: "I can see errors on the cables, he says, it's the packets". His speech/accent was sometimes a bit hard to understand but not too bad. At first I thought he said: "I can see 69 dropped packets". I asked him what did you say ? He said: "In the last 16 days there have been 69 million dropped packets !" =D I could not believe it. I asked him are you sure these are internet packets and he said yes. Now I did notice a little bit of internet delays and lags, but this was only during a short period, though yesterday indeed there was also some delay. So I and him were thinking the same thing. Perhaps this very old splitter has detoriated and it's cable and the noise on the TV is also interferring a little bit with the cable modem now and then. Strangely enough this NOISE has been on this cable for years and it never really bothered my internet connection. I can play games just fine... though perhaps this could explain why there might sometimes be a bit of lag in company of heroes, though I kinda think this is other guys. But maybe it was me alll along ?! That would be funny ! So what is now the most revealing and interesting part of this story, what is the moral of the story ?!: MY ANALOG TV IS WORTH GOLD !!!!!!!!!!!!!!!!!!!!!!!!! Cause it can actually DETECT a noisy SIGNAL. I am not sure if a digital television would have been able to detect it ?!?!?!?!? So I am now very curious if this will solve all of my weird connection issues. I am very skeptical, but there is some merit to the story, since the TV signal is indeed snowy on just one channel and slightly a second. I am very skeptical indeed. But if this is indeed the problem then WOW !!!!! WHAT A STORY !!! =D Bye, Skybuck =D P.S.: I tried to report this snow sooner via form/e-mail but that didn't work also told this to this guy. And usually I watch TV late at night beyond 22:00 when their service is not available, working hours and such... so I never really got to it. But since these problems started occuring I am desperate to solve this connection issue so I am going through all possible causes including a bad TV signal ! HAHAHAHA ! Funny story in a way ! I hope other ZIGGO users and cable modem/tv users/splitter users will learn from this story ! Cause if your TV signal is BAD it may affect your internet as well ! I am not getting my hopes up too much, there may be other problems, but this is indeed very intrigueing ! ;) =D Small applause for Ziggo for taking this complaint very seriously ! Thank you, time will tell if this actually solves my connection issues and TV signal issues. I will keep you posted on this ! ;) =D Bye, Skybuck. |
Mysterious internet/ethernet issue (kinda need testing/connection/communicationservice to diagnose it ???)
|
Mysterious internet/ethernet issue (kinda needtesting/connection/communication service to diagnose it ???)
I have a different explanation for the dropped internet packets.
The white cable connecting the splitter to the cable modem was slightly loose on the splitter side. I attached it firmly. I did notice tv signal became a bit worse on snowy channel but that might be by chance it fluctuates a bit. The loose cable modem cable does not explain the bad tv signal on one channel, so there may be something to it. I remain a bit skeptical though. Perhaps they known something I don't. I think either their encoding changed slightly or some external device is at cause, but soon I will known the thruth :) Bye, Skybuck. |
Mysterious internet/ethernet issue (kinda need testing/connection/communicationservice to diagnose it ???)
|
Mysterious internet/ethernet issue (kinda need testing/connection/communication service to diagnose it ???)
On Wed, 10 Oct 2018 18:41:13 -0700 (PDT), wrote:
This is a bit of a long shot, but maybe somebody has seen something like this, I am thinking not but ya never know. Situation is really weird: My PC can play World of Warships fine, Company of Heroes via Game Ranger fine. It can browse/websurf the internet fine. It can even connect to another laptop over same ethernet port by pulling out internet cable modem cable and reconnecting to laptop etc. But for whatever reason: If computers from the outside try to connect to my PC it's not working. Vice versa it's also not working ?!? Maybe cause those devices are natted. But as far as I know my PC is not NATTED. Or it's some strange/new ISP kind of NAT that behaves oddly. Like only big companies/servers are still reachable and not consumer PCs. As far as I can tell my PC does have a public IP address. There's no mystery involved when determining whether you have a 'public' (routable) IP address. It's very straightforward. 1. Open a Command Prompt and run the command "ipconfig". (no quotes) The output will be similar to this: C:\Windows\System32ipconfig Windows IP Configuration Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : Link-local IPv6 Address . . . . . : fe80::b5fe:220e:f461:d985%20 IPv4 Address. . . . . . . . . . . : 192.168.19.20 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.19.1 You can see that the IPv4 address assigned to this PC is 192.168.19.20 2. Next, in any web browser, navigate to https://www.whatismyip.com/ (There are lots of similar sites, but I suggested that one because it displays *both* addresses - see below.) Your local IP address will be displayed, along with your 'Public' IP address. If the two addresses are the same, there's no NAT. If the two addresses are different, there is a strong likelihood of NAT, although not necessarily. Further, if your local IP address falls within one of the following, it's NAT because those addresses are not publicly routable on the Internet: 10.0.0.0 – 10.255.255.255 172.16.0.0 – 172.31.255.255 192.168.0.0 – 192.168.255.255 What kind of electrical defect/or wear and tear could produce such a weird result ?! So far, you haven't described anything weird or unusual. (One thing which is on my mind is something different, a hacked or misconfigured/corrupted modem, which somehow blocks this). What's the make and model of the modem? We can use that info to see whether it's a cable modem or a DSL modem, and to see whether it's a plain modem (no router, no firewall, just a simple Ethernet bridge) or does it have an embedded router (with firewall, port forwarding, etc.) If it's a plain cable modem, for example, there won't be any configuration changes available to you, the user. Also, if it's a cable modem, there's usually a web server located at http://192.168.100.1 If your modem has such a web server, it's likely that one of the pages will include your signal levels, (post that info if you have questions), as well as statistics on "Corrected" signal errors versus "Uncorrectable" signal errors. Signal levels and error info are extremely helpful in troubleshooting most issues. For now I will keep assuming that everything is just fine on my PC and that it's the outside world that simply can't connect to my PC. Do you *want* the outside world to be able to connect to your computer? Most people don't. Also is there any service out there on the internet where there is a public computer that can send some traffic to a specific tcp or udp port ?! I second Paul's suggestion to use Steve Gibson's Shields Up! program to scan your ports, if you're interested in seeing what's open versus closed versus stealth. Ideally, everything is 'stealth' unless you have a specific reason for 'open' or 'closed'. |
Mysterious internet/ethernet issue (kinda need testing/connection/communication service to diagnose it ???)
On Thu, 11 Oct 2018 01:24:50 -0400, Paul wrote:
wrote: This is a bit of a long shot, but maybe somebody has seen something like this, I am thinking not but ya never know. Situation is really weird: My PC can play World of Warships fine, Company of Heroes via Game Ranger fine. It can browse/websurf the internet fine. It can even connect to another laptop over same ethernet port by pulling out internet cable modem cable and reconnecting to laptop etc. But for whatever reason: If computers from the outside try to connect to my PC it's not working. Vice versa it's also not working ?!? Maybe cause those devices are natted. But as far as I know my PC is not NATTED. Or it's some strange/new ISP kind of NAT that behaves oddly. Like only big companies/servers are still reachable and not consumer PCs. As far as I can tell my PC does have a public IP address. But apperently this is not working/enough anymore ?! Very strange. I plan on replacing my PC with a laptop, just as a test, to see if it's the PC at fault and it's software, or if something more strange is going on ?! What kind of electrical defect/or wear and tear could produce such a weird result ?! (One thing which is on my mind is something different, a hacked or misconfigured/corrupted modem, which somehow blocks this). For now I will keep assuming that everything is just fine on my PC and that it's the outside world that simply can't connect to my PC. Though even laptop PC sometimes behaves weird as far as I can recall, but usually I can get it to work (?!) though now I am not so sure anymore. It's not stupid firewall cause this is turned off and would usually allow anyway... it's something more strange. I will try to get to the bottom of it though. Also is there any service out there on the internet where there is a public computer that can send some traffic to a specific tcp or udp port ?! Just to see if my PC can actually receive this ?! That would be very helpfull. Bonus would be if I can then send something back to it's udp or tcp port to see if that computer can also receive from me... and finally it reports this via a website/html or so... or even e-mail or so. Bye, Skybuck. OK, so you did this. ISP ------ modem/router ------- single_computer Or, you did this. ISP ------ modem ------- single_computer In the latter case, Windows terminates the PPPOE protocol coming from the modem. There's no NAT in that case. PPPOE is a DSL-only thing and the OP didn't clearly indicate that he's using DSL. Also, the presence of PPPOE, by itself, shouldn't be a definitive answer to whether NAT is involved. PPPOE is just a tunnel for getting traffic from point A to point B within the ISP infrastructure. Its presence, or absence, doesn't tell us anything about NAT. snip Note that the router likely has "scanning detection" and it can tell when one of these tests is running. Some routers have that feature, but cable modems do not, and to my knowledge DSL modems also do not, so it's important to get a clear picture of the OPs networking equipment. I used to have logging enabled on one of my routers, and if I did a GRC scan, the log would have an entry that the router had "closed the front door". This invalidates the GRC test results, when the router clams up for a few minutes and refuses to respond. It gives a false sense of Stealth. So if you're using a router with SMTP logging, check the log and make That sentence should read, "So if you're using a router with logging...". (Remove SMTP) With very few exceptions, networking devices that can generate logs will default to storing those logs directly on the device that created them. sure the router doesn't notice what you're doing to it :-) I can have my router send a log packet to this PC, so I can see what's going on. You're describing SNMP, but SNMP and SMTP (email) are just two methods by which a networking device can send its logs to an external device. |
Mysterious internet/ethernet issue (kinda needtesting/connection/communication service to diagnose it ???)
Well, to get this lucrative project under way, I
need to know the *model number* of the modem. Just in case it's a modem/router... Is it an Alcatel or a Fritz, or something else ? Cable modem: Ubee evm320b I already tried searching the internet for a manual. I only found a manual for a slightly different version, one that also has a wireless chip inside of it if I recall. This exact model's manual seems to be missing. But it's basically a standard cable modem/docsis modem probably 2.0 or so. I tried shields up, but had windows firewall running, and everything shows green. Already tried this tool in the past, could close down the firewall... it's a nice tool. I guess it's somewhat usefull at finding open ports when firewall is down... proving that that computer can reach my computer... But since my computer contacted that website... it's pretty useless since this is how NAT is circumvented. My computer makes outbound connection to web and thus web is allowed to connect to my computer. I hope now that you understand that I don't think this tool is very usefull... though I may be wrong, since the scan can be started later. But websites can use tricks to keep connections open perhaps that is what shields up is doing. For my test, you would try to connect to my computer without my computer making an outbound connection to your computer. At least that is kinda the idea. Bye, Skybuck. |
Mysterious internet/ethernet issue (kinda needtesting/connection/communication service to diagnose it ???)
Also, if it's a cable modem, there's usually a web server located at
http://192.168.100.1 Suppose the cable modem does listen to 192.168.100.1 what should the netmask be on my windows computer to be able to access it ? And what should the ip address of the windows computer be ? Some guesses: Windows PC 192.168.100.2 Mask either: 255.255.255.0 or Mask either: 255.255.254.0 ? or Mask either: 255.255.0.0 ? Tried some of these some time. Never really understood how to compute these netmasks properly, it's a very fokking annoying feature of the internet tech. Bye, Skybuck. |
Mysterious internet/ethernet issue (kinda needtesting/connection/communication service to diagnose it ???)
I tried:
192.168.100.2 for windows PC 255.255.255.0 netmask. The cable modem remains unaccessable from the local LAN. So your knowledge of this is now completely useless, because of either: 1. It's locked by the ISP, these cable modems can only be accessed from the outside. 2. It's a bug/problem, modem was resetted. Most likely cause is locking/updating of the cable modem bios/firmware. There was a thread on the internet about people locating their public IPs of their cable modems, this is more difficult to do then it seems. A tracert will probably not report it because the cable modem does not take part in the trace and does not reveal itself ? Or there is another reason for it. If you know how to find my public IP address of my Cable modem I am all ears, cause this is interesting stuff. And apperently it is something completely different than my Windows PC public IP address which I can tell you right now is simply: 85.25.113.203 mask 255.255.254.0 gateway 84.25.112.1 dhcp 10.255.235.1 Scan/do with it what you want ;) Bye, Skybuck. |
Mysterious internet/ethernet issue (kinda need testing/connection/communication service to diagnose it ???)
|
Mysterious internet/ethernet issue (kinda needtesting/connection/communication service to diagnose it ???)
I used this UDP port scanner to send UDP packets to my computer:
https://hackertarget.com/udp-port-scan/ So far my computer seems to be receiving UDP packets fine, even with my own software. I did reset cable modem though before this test to do some experiments. Maybe that has something to do with it. Still need a tester to test tcp/ip custom tools and finally the coin system. It would be very weird if it wouldn't work after this confirmation udp seems to be working fine. Bye, Skybuck. |
Mysterious internet/ethernet issue (kinda need testing/connection/communication service to diagnose it ???)
On Fri, 12 Oct 2018 08:45:53 -0700 (PDT), wrote:
Also, if it's a cable modem, there's usually a web server located at http://192.168.100.1 Suppose the cable modem does listen to 192.168.100.1 what should the netmask be on my windows computer to be able to access it ? And what should the ip address of the windows computer be ? It's actually much easier than that. You don't need to make any changes to your networking configuration because if the cable modem has a web server listening at that address, it simply "sniffs" the outbound traffic to see the destination IP address. If it matches the address of the internal web server, the traffic is redirected to the internal web server rather than forwarded on to your ISP (to the Internet). The only time you'd need to make a network change is if you have a NAT router and you've configured the LAN side to be in the 192.168.100.0/24 subnet. In that case, you wouldn't be able to reach a web server in the cable modem. The technical details probably don't matter to you. I get the sense that your modem is a combo modem-router, so the web server that shows cable modem statistics, if there is one, would be accessible via one of the pages at the LAN address of the router side of that device. I haven't seen combo modem-router devices that have a separate web server at 192.168.100.1 like plain cable modems usually do. It's also possible that your ISP doesn't allow you to see that information, but in all cases they can see it from their side. From their side, the modem device has an entirely different IP address that they can use to access it and see what's going on. You can't use that IP address because traffic to that address has to come in over the coax line. Some guesses: Windows PC 192.168.100.2 Mask either: 255.255.255.0 That would work if you're connecting directly to a plain cable modem that has a web server at 192.168.100.1. If there's a router between your PC and the modem, it won't work. The technical details probably don't matter to you but, in a nutshell, you can't have the same subnet on two sides of a router and expect the router to pass that traffic. or Mask either: 255.255.254.0 ? or Mask either: 255.255.0.0 ? Tried some of these some time. Never really understood how to compute these netmasks properly, it's a very fokking annoying feature of the internet tech. Annoying perhaps, but critical to the success of any networking, whether local on your LAN or extending to the Internet as a whole. Simply put, the netmask tells you which part of an IP address refers to the network and which part identifies the particular host. |
Mysterious internet/ethernet issue (kinda needtesting/connection/communication service to diagnose it ???)
Everything seems fine with my IP/UDP situation. (Resetted cable modem too)
Used a port scanner to send some udp packets to my computer. This one udp packet at port 69 arrived at my computer. I also re-enabled winpcap to see what is going on. Could see ip/udp packets coming in just fine. So it's probably other ****ty systems not being able to connect, still confused about this. Bye, Skybuck. |
Mysterious internet/ethernet issue (kinda need testing/connection/communication service to diagnose it ???)
|
Mysterious internet/ethernet issue (kinda needtesting/connection/communication service to diagnose it ???)
Tomorrow new device will arrive between 10h and 13h according to a mail I got.
So if true, then by tomorrow at least TV signal will be better, maybe my internet connection will be even faster. It seems wise to wait with testing until this device is replaced, then again, I remain very skeptical that this noise on tv signal has any effect on cable modem. I shall perform some speed tests just to see if there is any difference before and after replacing the device. Another explanation could be that PC too slow to achieve certain speeds, then again I think under ideal circumstances, 50 megabyte/sec should be doable for this system perhaps even 100 megabyte/sec. So far I could download 20 megabyte/sec with bittorrent just fine this year.. The harddisk/cpu can't even keep up with it having to calculate sha256 hashes. I think 20 megabyte/sec is already pretty insane fast ;) Cannot imagine it becoming any faster thx to new device. My hypothesis for now is: The 69 million dropped packets may have been an incident or some other case, maybe PC too slow occasionally. Kinda wanted to now if this was sporadic or constantly... This is why I would like to get into the cable modem's log to see it with my own eyes to see what is going on. Perhaps this docsis is so good that this noise doesn't even influence the speed to match... then again... a dropped packet is a dropped packet... maybe some docsis frames not sure what this guy ment. Not being able to go into this cable modem log kinda sucks though. Now I am not sure if the noise/packet loss was real and what kind... I do have logs from long ago... showing some kind of signal loss but that was probably when the operating on the net... this was 2004/2005 maybe 2009.... and a different cable modem a surfboard. Anyway... Tonight and maybe tomorrow night I will try and scan a certain 10.x.x.x ip range since this is supposed to be the public ip ranges of these cable modems. In an attempt to find my cable modems IP. Or perhaps a better idea, phone the ISP... ask them the IP address of my cable modem... but for me it's kinda more fun to perform a scan just to see if that works or not. Since it will be at night not too much of a big deal for me... except system collecting some dust... Maybe I ll try even both not sure yet. Also depends on if others will test this software with me or not, then I may just skip the whole thing and hope for the best. What if tv signal does not improve ? Hmmm then I will continue performing software test if I manage to find somebody to do this with. Bye for now, Skybuck. |
Mysterious internet/ethernet issue (kinda need testing/connection/communication service to diagnose it ???)
On Fri, 12 Oct 2018 11:56:41 -0400, Paul wrote:
For test, you'd want to set up a server on Port 80 (WWW) or Port 23 (FTP). Tip 1: If you're testing locally, any unused port is fair game. Tip 2: Port 23 is Telnet. FTP is port 21 for the control channel, plus port 20 or a random high port for the data channel, depending on whether it's configured to be Active or Passive. I'm not convinced yet, that your device is bridged though. It's a modem/router. I agree. It sure looks that way. |
Mysterious internet/ethernet issue (kinda needtesting/connection/communication service to diagnose it ???)
Annoying perhaps, but critical to the success of any networking, whether
local on your LAN or extending to the Internet as a whole. Simply put, the netmask tells you which part of an IP address refers to the network and which part identifies the particular host. I know this already, it's very vague, cause all kinds of network types possible. Also how to calculate this netmask in the head ? Very hard to do requires calculating some bitmask and then converting that to decimals... ok I can do that. Why not enter all this stuff in bits in the first place, maybe be a bit easier and prevent this conversion calculation. Then the thing that gets even worse is this /24 specifier... What is this supposed to mean ? Also can netmasks be 10101010101 or always 1111111 ? The first case is my guess, which makes very little sense. Perhaps these guys trying to access their ziggo modems are talking about two different things: 1. The status page of the modem. 2. The menus of the modem. They are trying to access 1, which is cut off from them, only from external it can be seen. Not sure if these guys can access 2. What would cause 2 to not be available ? If I set my cable modem to bridge mode or some other crazy setting is there a chance the webserver won't work anymore ? What setting would I have to set for the webserver to go missing ? Also surely the IP address assigned to this webserver would be resetted if I reset the cable modem ?! Even if not I already tried a scan of 192.168.x.x However this can be done partiually... later on the cable modem gets an ip from coax/isp. and this can no longer function... even windows refuses to send packets out, however the scan program happily continues. One possibility to keep the cable modem operating at IP range 192.168.x.x would be to disconnect it from the internet by removing the coax cable. I may try this later to perform an IP scan range on this device. I do remember re-assing 192.168.100.1 to something more reasonable 0.100 or something or 0.254 But now I can't remember, apperently didn't document it, maybe it was even on different modem but I think it was on this. May have to replace this modem cause not being able to enter it is kinda ****ty... and weird... hack concerns also. Wish somebody could read out it's memory contents and check if it was hacked or so. Another hypo is that ISP tried some experimental software update and it somehow failed. Or my vaccum cleaner killed parts of it... still strange that it's functioning perfectly except the menu... seems more human intervention then by chance. Bye, Skybuck. |
Mysterious internet/ethernet issue (kinda needtesting/connection/communication service to diagnose it ???)
On Friday, October 12, 2018 at 8:04:51 PM UTC+2, Char Jackson wrote:
On Fri, 12 Oct 2018 08:55:31 -0700 (PDT), wrote: I tried: 192.168.100.2 for windows PC 255.255.255.0 netmask. The cable modem remains unaccessable from the local LAN. Assuming you were still physically connected directly to the modem device, that tells me one of two things: 1. The modem may not have a web server at all. Not all plain DOCSIS modems do, although most do. 2. Or, your modem may be a combo modem-router, which I believe is likely to be the case. As a result, there will not be a web server listening at the usual 192.168.100.1 address because: 2A: the modem info is available via the router interface, or 2B: the ISP doesn't make the modem info available to you. So your knowledge of this is now completely useless, because of either: 1. It's locked by the ISP, these cable modems can only be accessed from the outside. 2. It's a bug/problem, modem was resetted. Most likely cause is locking/updating of the cable modem bios/firmware. There was a thread on the internet about people locating their public IPs of their cable modems, this is more difficult to do then it seems. It's difficult because cable modems don't have public IP addresses, at least not a public address that you can access (if the ISP is doing their job properly). A plain DOCSIS modem will usually have a web server at 192.168.100.1 that is only accessible from the LAN side of the modem, (you can access it, but the ISP cannot), and a web server that is only accessible from the WAN side of the modem (the ISP can access it, but you cannot). Technically, the WAN IP is a publicly routable IP, but if the ISP is even slightly competent, you should not be able to access your modem via that IP. You'd have to traverse multiple firewalls that are internal to the ISP. A tracert will probably not report it because the cable modem does not take part in the trace and does not reveal itself ? Or there is another reason for it. At the networking level, a plain cable modem is technically a bridge, and bridges don't operate at OSI Layer 3 where traceroutes operate. That's why cable modems don't show up in a traceroute. However, it appears that you don't have a plain cable modem, but a combo modem-router unit. As such, it (the router portion of that combo device) should appear in your traceroute results. The modem portion will not show up because of the reason given above. If you know how to find my public IP address of my Cable modem I am all ears, cause this is interesting stuff. And apperently it is something completely different than my Windows PC public IP address which I can tell you right now is simply: 85.25.113.203 mask 255.255.254.0 gateway 84.25.112.1 I assume that's a typo. The gateway should be 85.25.112.1 Well spotted, but it's other way around at least currently. 85 was the typo, this must be 84 for my public ip address :) dhcp 10.255.235.1 If that's the IP address of your PC, then yes, you're using NAT. By definition, addresses within the 10.x.x.x range are not publicly routable. No this is ip dhcp gateway... just to lazy to type it follow. See windows 7 network/adapter screenshot On second thought just gonna roll out some ipconfig at least this can be copied pasted somewhat... even from ****ty ms-dos prompt ;) this will get an update in windows 10 sometime ;) me on windows 7 though. Microsoft Windows [Version 6.1.7601] Copyright (c) 2009 Microsoft Corporation. All rights reserved. C:\Users\Skybuckipconfig Windows IP Configuration Ethernet adapter Local Area Connection 9: Connection-specific DNS Suffix . : dynamic.ziggo.nl Link-local IPv6 Address . . . . . : fe80::581b:c1a:e679:57e3%30 IPv4 Address. . . . . . . . . . . : 84.25.113.203 Subnet Mask . . . . . . . . . . . : 255.255.254.0 Default Gateway . . . . . . . . . : 84.25.112.1 Ethernet adapter Tunngle: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Ethernet adapter Local Area Connection 8: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Local Area Connection* 19: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter isatap.{888C0424-09D9-48F6-84EB-EDBE6297AB66}: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Reusable Microsoft 6To4 Adapter: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter isatap.dynamic.ziggo.nl: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : dynamic.ziggo.nl Tunnel adapter Local Area Connection* 17: Connection-specific DNS Suffix . : dynamic.ziggo.nl IPv6 Address. . . . . . . . . . . : 2002:5419:71cb::5419:71cb Default Gateway . . . . . . . . . : 2002:c058:6301::1 2002:c058:6301::c058:6301 C:\Users\Skybuck Bye, Skybuck ;) |
Mysterious internet/ethernet issue (kinda needtesting/connection/communication service to diagnose it ???)
sure the router doesn't notice what you're doing to it :-)
I can have my router send a log packet to this PC, so I can see what's going on. You're describing SNMP, but SNMP and SMTP (email) are just two methods by which a networking device can send its logs to an external device. SNMP is disabled according to folks on ziggo forum. Here is my question for you: Is SNMP only used for "cable modem status page" ? for ISP side ? Or is SNMP also used to access cable modem menu ?! If later then this explains why I cannot access my cable modem menu anymore. Bye, Skybuck. |
Mysterious internet/ethernet issue (kinda needtesting/connection/communication service to diagnose it ???)
By the way, you didn't mention the results of the test to check for NAT.
I'm guessing you'll find that NAT is indeed involved. I am not sure what test you mean ? I did test udp/ip a moment ago... and it was working the way I expected it to work. I find the test you mentioned, this shields up to vague, it does not specify which ports are being tested, it scans a bunch I don't need/want that. I need only one udp port to be scanned/tested, this is enough for me. So I used a different scanner/udp generator mentioned somewhere else in this thread. This keeps down complexity and avoid any problems like bandwidth shortage or spam protection etc. So I like the more "simple" test better than a full range test. For now I do not believe my PC is "natted" at least not for IP/UDP. TCP/IP may be a different matter. I also still does not explain why coin system 1 seems to work and coin system 2 does not seem to work. Only testing can figure this out. coin system 2 which is a clone of 1 used a different dns name to find my computer... according to others this dns is working just fine and I can confirm it's working just fine. One more test I could do is replace the dns name (I don't like DNS in general for networking but ok) with just hard-coded IP addresses see if that makes any difference. Bye, Skybuck. |
Mysterious internet/ethernet issue (kinda need testing/connection/communication service to diagnose it ???)
|
Mysterious internet/ethernet issue (kinda need testing/connection/communication service to diagnose it ???)
|
Mysterious internet/ethernet issue (kinda need testing/connection/communication service to diagnose it ???)
On Fri, 12 Oct 2018 11:43:09 -0700 (PDT), wrote:
By the way, you didn't mention the results of the test to check for NAT. I'm guessing you'll find that NAT is indeed involved. I am not sure what test you mean ? From my first post to this thread: In any web browser, navigate to https://www.whatismyip.com/ (There are lots of similar sites, but I suggested that one because it displays *both* addresses - local and public.) Your local IP address will be displayed, along with your 'Public' IP address. If the two addresses are the same, there's no NAT. If the two addresses are different, there is a strong likelihood of NAT, although not necessarily. I did test udp/ip a moment ago... and it was working the way I expected it to work. I find the test you mentioned, this shields up to vague, it does not specify which ports are being tested, it scans a bunch I don't need/want that. I need only one udp port to be scanned/tested, this is enough for me. So I used a different scanner/udp generator mentioned somewhere else in this thread. Shields Up can be used to probe a specific port. Just click the button called "User-Specified Custom Port Probe". Enter the desired port and away you go. This keeps down complexity and avoid any problems like bandwidth shortage or spam protection etc. So I like the more "simple" test better than a full range test. For now I do not believe my PC is "natted" at least not for IP/UDP. It sounds like you haven't checked for NAT just yet, so it's too early to say. Go ahead and test as I described above, using https://www.whatismyip.com. TCP/IP may be a different matter. I also still does not explain why coin system 1 seems to work and coin system 2 does not seem to work. Only testing can figure this out. coin system 2 which is a clone of 1 used a different dns name to find my computer... according to others this dns is working just fine and I can confirm it's working just fine. One more test I could do is replace the dns name (I don't like DNS in general for networking but ok) with just hard-coded IP addresses see if that makes any difference. I'm not sure what you're referring to, but it sounds like a new issue, unrelated to the current discussion, right? |
Mysterious internet/ethernet issue (kinda need testing/connection/communication service to diagnose it ???)
|
Mysterious internet/ethernet issue (kinda needtesting/connection/communication service to diagnose it ???)
On Friday, October 12, 2018 at 10:36:07 PM UTC+2, Char Jackson wrote:
On Fri, 12 Oct 2018 11:43:09 -0700 (PDT), wrote: By the way, you didn't mention the results of the test to check for NAT. I'm guessing you'll find that NAT is indeed involved. I am not sure what test you mean ? From my first post to this thread: In any web browser, navigate to https://www.whatismyip.com/ (There are lots of similar sites, but I suggested that one because it displays *both* addresses - local and public.) Your local IP address will be displayed, along with your 'Public' IP address. If the two addresses are the same, there's no NAT. If the two addresses are different, there is a strong likelihood of NAT, although not necessarily. Your Public IPv4 is: 84.25.113.203 Your IPv6 is: Not Detected Your Local IP is: 84.25.113.203 I did test udp/ip a moment ago... and it was working the way I expected it to work. I find the test you mentioned, this shields up to vague, it does not specify which ports are being tested, it scans a bunch I don't need/want that. I need only one udp port to be scanned/tested, this is enough for me. So I used a different scanner/udp generator mentioned somewhere else in this thread. Shields Up can be used to probe a specific port. Just click the button called "User-Specified Custom Port Probe". Enter the desired port and away you go. Only tcp or udp too ? :) This keeps down complexity and avoid any problems like bandwidth shortage or spam protection etc. So I like the more "simple" test better than a full range test. For now I do not believe my PC is "natted" at least not for IP/UDP. It sounds like you haven't checked for NAT just yet, so it's too early to say. Go ahead and test as I described above, using https://www.whatismyip.com. TCP/IP may be a different matter. I also still does not explain why coin system 1 seems to work and coin system 2 does not seem to work. Only testing can figure this out. coin system 2 which is a clone of 1 used a different dns name to find my computer... according to others this dns is working just fine and I can confirm it's working just fine. One more test I could do is replace the dns name (I don't like DNS in general for networking but ok) with just hard-coded IP addresses see if that makes any difference. I'm not sure what you're referring to, but it sounds like a new issue, unrelated to the current discussion, right? Not sure. There seem to be different kinds of NAT, maybe some NAT are still there even if IP address are same in test above ? Though most seem to replace IP... otherwise it wouldn't make sense to use NAT in first place... hmmm. Bye, Skybuck. |
Mysterious internet/ethernet issue (kinda need testing/connection/communicationservice to diagnose it ???)
wrote:
sure the router doesn't notice what you're doing to it :-) I can have my router send a log packet to this PC, so I can see what's going on. You're describing SNMP, but SNMP and SMTP (email) are just two methods by which a networking device can send its logs to an external device. SNMP is disabled according to folks on ziggo forum. Here is my question for you: Is SNMP only used for "cable modem status page" ? for ISP side ? Or is SNMP also used to access cable modem menu ?! If later then this explains why I cannot access my cable modem menu anymore. Bye, Skybuck. Go to this page. https://www.grc.com/x/ne.dll?bh0bkyd2 Click "Proceed". On the new page that appears, look for this row. File Sharing Common Ports All Service Ports ------------ ------------ ----------------- Hold your mouse over "All Service Ports" and you should see a "hand" icon. That means the "All Service Ports" field is a "button". Click the button to kick off a test. That should cover the status of the first 1056 ports (1024 ports plus a few more). Paul |
Mysterious internet/ethernet issue (kinda needtesting/connection/communication service to diagnose it ???)
On Friday, October 12, 2018 at 10:14:53 PM UTC+2, Char Jackson wrote:
On Fri, 12 Oct 2018 11:31:53 -0700 (PDT), wrote: Annoying perhaps, but critical to the success of any networking, whether local on your LAN or extending to the Internet as a whole. Simply put, the netmask tells you which part of an IP address refers to the network and which part identifies the particular host. I know this already, it's very vague, cause all kinds of network types possible. Also how to calculate this netmask in the head ? Just use an IP calculator. There are tons available on the web. Very hard to do requires calculating some bitmask and then converting that to decimals... ok I can do that. Why not enter all this stuff in bits in the first place, maybe be a bit easier and prevent this conversion calculation. Then the thing that gets even worse is this /24 specifier... The /24 is shorthand for 255.255.255.0. Both formats show that 24 bits are being used to specify the network and the other 8 bits are being used to identify the hosts on that network. I think I get it now. 24 means the first 24 bits are masked ? Or is this just a coincidence ? What would net mask be for 255.255.254.0 ? /23 ? So then bits are order from left to right 123456789-----23. Hmmm.. Bye, Skybuck. |
Mysterious internet/ethernet issue (kinda needtesting/connection/communication service to diagnose it ???)
I strongly assume the answer to the first part is yes, and that alone
would have confirmed to you that the device is a combo modem-router and not simply a modem. LOL, you mean menu of cable modem ? No I cannot access it via the ethernet/http/local lan, this is the kinda weird part. I think this happened after last time I configured it... I must have done something wrong. Or it was closed off, hacked or damaged. I think I was playing around with NAT settings, bridge settings or even "militarized zone" or whatever that means. DMZ ?! something weird. Hmmm kinda funny if a setting locked me out from the modem... Bye, Skybuck. |
Mysterious internet/ethernet issue (kinda need testing/connection/communicationservice to diagnose it ???)
Char Jackson wrote:
On Fri, 12 Oct 2018 11:31:53 -0700 (PDT), wrote: Annoying perhaps, but critical to the success of any networking, whether local on your LAN or extending to the Internet as a whole. Simply put, the netmask tells you which part of an IP address refers to the network and which part identifies the particular host. I know this already, it's very vague, cause all kinds of network types possible. Also how to calculate this netmask in the head ? Just use an IP calculator. There are tons available on the web. When you have a moment, pop down to the "Port-Restricted Cone NAT Router (Game Ranger)" thread, and look at what "ipconfig" coughed up on his PC. Bridged ??? Or what ??? I was expecting a 192.168.x.y address. Paul |
Mysterious internet/ethernet issue (kinda needtesting/connection/communication service to diagnose it ???)
I can get a new modem from my ISP whenever I want, I am "eligeable" for it, cause my modem is so old.
But if it ain't broke don't fix it ;) My cable modem is allowing me the internet and receive so as far as I am concerned it ain't broken. Also I am not sure if I will like the new one. It must not have a fan/ventilator or it will suck the living **** out of the dust out of room into it and it will overheat within a month plus additional noise could also be annoying. I do look forward to "multiple ethernet ports" and multiple pcs to such a device and maybe even ipv6 or multicast and maybe even higher speeds. But that will have to wait till later, maybe when I buy new PC. Switching cable modems is not a light thing for me. Internet is very important for me, so I am not just going to switch to some unknown new cable modem. This old one has served me very well... never let me down connection wise, well almost never. Seen it hang lately maybe one or twice... but beside from that no real significant issues. Furthermore I want to try and find out what caused all of this in the first place to try and prevent it from happening again. Especially if it was a misconfiguration... since new cable modem will be even more complex. Also trying to diagnose this mystery is interesting in itself and learn from it. Had I replaced modem immediately for example instead of calling my ISP... TV signal would still be bad. Tomorrow I will learn more. Maybe fixing this splitter will allow me to access my cable modem for some strange reason... probably not but who knows. Maybe the noise on the line, if real, is causing a misconfiguration of the cable modem because some bits are flipped cause of noise. Perhaps configuration parameters downloaded to the device on reset are not protected by CRC32/integrity checking. This might explain why the cable modem menu is being locked out, if it's some strange http/webserver misconfiguration by packet/data corruption due to noise. Bye for now, Skybuck. |
Mysterious internet/ethernet issue (kinda need testing/connection/communication service to diagnose it ???)
On Fri, 12 Oct 2018 15:17:13 -0700 (PDT), wrote:
On Friday, October 12, 2018 at 10:14:53 PM UTC+2, Char Jackson wrote: On Fri, 12 Oct 2018 11:31:53 -0700 (PDT), wrote: Annoying perhaps, but critical to the success of any networking, whether local on your LAN or extending to the Internet as a whole. Simply put, the netmask tells you which part of an IP address refers to the network and which part identifies the particular host. I know this already, it's very vague, cause all kinds of network types possible. Also how to calculate this netmask in the head ? Just use an IP calculator. There are tons available on the web. Very hard to do requires calculating some bitmask and then converting that to decimals... ok I can do that. Why not enter all this stuff in bits in the first place, maybe be a bit easier and prevent this conversion calculation. Then the thing that gets even worse is this /24 specifier... The /24 is shorthand for 255.255.255.0. Both formats show that 24 bits are being used to specify the network and the other 8 bits are being used to identify the hosts on that network. I think I get it now. 24 means the first 24 bits are masked ? Yes, in a /24 network the first 24 bits (or first 3 octets) identify the local subnet. The rest, the last 8 bits (since IPv4 is 32 bits long) are used to identify the devices on that network. The first and last addresses (0 and 255 if the network is /24) are reserved: 0 means 'this network' and 255 is the broadcast IP, which leaves room for 254 actual networking devices. Or is this just a coincidence ? What would net mask be for 255.255.254.0 ? /23 ? Correct, and a /23 subnet has address space for about 510 devices, versus the 254 for a /24. So then bits are order from left to right 123456789-----23. Hmmm.. |
Mysterious internet/ethernet issue (kinda need testing/connection/communication service to diagnose it ???)
|
Mysterious internet/ethernet issue (kinda need testing/connection/communication service to diagnose it ???)
|
Mysterious internet/ethernet issue (kinda need testing/connection/communication service to diagnose it ???)
On Fri, 12 Oct 2018 18:22:47 -0400, Paul wrote:
Char Jackson wrote: On Fri, 12 Oct 2018 11:31:53 -0700 (PDT), wrote: Annoying perhaps, but critical to the success of any networking, whether local on your LAN or extending to the Internet as a whole. Simply put, the netmask tells you which part of an IP address refers to the network and which part identifies the particular host. I know this already, it's very vague, cause all kinds of network types possible. Also how to calculate this netmask in the head ? Just use an IP calculator. There are tons available on the web. When you have a moment, pop down to the "Port-Restricted Cone NAT Router (Game Ranger)" thread, and look at what "ipconfig" coughed up on his PC. Bridged ??? Or what ??? I was expecting a 192.168.x.y address. He's been mentioning router settings such as port forwarding, DMZ, and other things, so it's a dreaded modem-router combo box, but per his ipconfig output there's no NAT so the router section is disabled. |
Mysterious internet/ethernet issue (kinda need testing/connection/communicationservice to diagnose it ???)
Char Jackson wrote:
On Fri, 12 Oct 2018 18:22:47 -0400, Paul wrote: Char Jackson wrote: On Fri, 12 Oct 2018 11:31:53 -0700 (PDT), wrote: Annoying perhaps, but critical to the success of any networking, whether local on your LAN or extending to the Internet as a whole. Simply put, the netmask tells you which part of an IP address refers to the network and which part identifies the particular host. I know this already, it's very vague, cause all kinds of network types possible. Also how to calculate this netmask in the head ? Just use an IP calculator. There are tons available on the web. When you have a moment, pop down to the "Port-Restricted Cone NAT Router (Game Ranger)" thread, and look at what "ipconfig" coughed up on his PC. Bridged ??? Or what ??? I was expecting a 192.168.x.y address. He's been mentioning router settings such as port forwarding, DMZ, and other things, so it's a dreaded modem-router combo box, but per his ipconfig output there's no NAT so the router section is disabled. His ISP must have done that. I think the box is modem/router/VOIP with two RJ11 jacks, and it's possible disabling the routing portion might also take out the VOIP as well. Not that this is necessary to disable the VOIP of course. If there's no registration on the server, it's not going to work anyway. Paul |
Mysterious internet/ethernet issue (kinda needtesting/connection/communication service to diagnose it ???)
On Saturday, October 13, 2018 at 7:23:53 AM UTC+2, Char Jackson wrote:
On Fri, 12 Oct 2018 15:17:13 -0700 (PDT), wrote: On Friday, October 12, 2018 at 10:14:53 PM UTC+2, Char Jackson wrote: On Fri, 12 Oct 2018 11:31:53 -0700 (PDT), wrote: Annoying perhaps, but critical to the success of any networking, whether local on your LAN or extending to the Internet as a whole. Simply put, the netmask tells you which part of an IP address refers to the network and which part identifies the particular host. I know this already, it's very vague, cause all kinds of network types possible. Also how to calculate this netmask in the head ? Just use an IP calculator. There are tons available on the web. Very hard to do requires calculating some bitmask and then converting that to decimals... ok I can do that. Why not enter all this stuff in bits in the first place, maybe be a bit easier and prevent this conversion calculation. Then the thing that gets even worse is this /24 specifier... The /24 is shorthand for 255.255.255.0. Both formats show that 24 bits are being used to specify the network and the other 8 bits are being used to identify the hosts on that network. I think I get it now. 24 means the first 24 bits are masked ? Yes, in a /24 network the first 24 bits (or first 3 octets) identify the local subnet. The rest, the last 8 bits (since IPv4 is 32 bits long) are used to identify the devices on that network. The first and last addresses (0 and 255 if the network is /24) are reserved: 0 means 'this network' and 255 is the broadcast IP, which leaves room for 254 actual networking devices. Or is this just a coincidence ? What would net mask be for 255.255.254.0 ? /23 ? Correct, and a /23 subnet has address space for about 510 devices, versus the 254 for a /24. 8 bits allow a range of 0 to 255. So minus the broadcast address it's 0 to 254. Which is 255 devices. 9 bits doubles this to 510 devices. So you seem correct about that but wrong about the first ? Where you off by one for /24 ? ;) Or is there something special going on ? ;) For example address 0 can't be used ? Think it can though ;) Bye, Skybuck. |
| All times are GMT +1. The time now is 01:35 AM. |
|
Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
HardwareBanter.com