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#21
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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. |
#23
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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. |
#24
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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. |
#25
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Mysterious internet/ethernet issue (kinda need testing/connection/communication service to diagnose it ???)
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#26
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Mysterious internet/ethernet issue (kinda need testing/connection/communication service to diagnose it ???)
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#27
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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? |
#28
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Mysterious internet/ethernet issue (kinda need testing/connection/communication service to diagnose it ???)
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#29
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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. |
#30
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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 |
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