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#1
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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. |
#2
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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. |
#3
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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 ) |
#4
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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. |
#5
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Mysterious internet/ethernet issue (kinda need testing/connection/communicationservice to diagnose it ???)
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#6
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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. |
#7
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Mysterious internet/ethernet issue (kinda need testing/connection/communicationservice to diagnose it ???)
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#8
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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'. |
#9
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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. |
#10
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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. |
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