WINS Strange resolution

[lardum]

Hi,

I have a strange error, when trying to ping a hostname on a remote network via an ISDN link the hostname is resolved to the network address on the remote network, e.g 10.1.1.0 instead of getting the actual IP 10.1.1.15.

Anyone have any ideas of why this occur?

 

[theripper]

lardum -

It's possible that the remote route table/router is set to reply to tcp/ip commands, and not allow individual PCs/Clients reply.

Some companies add this type of feature to their routers for extra security. It sounds like the 10.1.1.0 is the serial (ISDN) interface to the remote network. Couple questions:

Does it happen with every remote address you attempt to ping? When was the last time you were able to ping successfully to your remote site? And, what may have changed recently?

If the remote network has a network printer, try to telnet to it. One of the quickest ways to see if the remote site has access-lists/security features enabled is to telnet to something on the other side.

Hope this helps ~

 

[lardum]

Hi,

thanks for your response. The "router" we use is a 3COM OfficeConnect LAN Modem which actually is an ISDN modem.

The strange thing is that some clients on the remote network responds with their actual IP address. Since this is a newly configured device and i configured it i know that there aren't any access-lists or something. I do telnet sometimes to configure it, and when i do this i do this on the Ethernet interface and not the serial interface. One funny thing is that on the serial interface's i use something called IP Unnumbered, and maybe thats why the serial interface is called 10.1.1.0.

Please comment my theory, and if someone have any experience with the 3COM ISDN modem i would like to hear your opinions.

 

[theripper]

lardum -

That is interesting. I'm unfamilar with 3COM's modems. But after reading your comments, I think it may have something to do with that 'IP UnNumbered'. I still am interested why some remote users will respond with their IP and others will not.

One would think the same type of responses would be obtained each time.

Good Luck ~