[Techtalk] Linux gateway and home net clients

Subba Rao subba9 at cablespeed.com
Mon May 19 22:31:17 EST 2003


I have a Linux gateway for my home network to connect to the Internet. The
gateway has a local DNS and everything works fine on the gateway system. I can
access the Internet without any problems.

Now I have a laptop (W2K) that connects thru the gateway to the Internet.  The
access was working fine until this morning, when I decided to uninstall some
extra packages I installed on the laptop. Now,

- laptop can connect to the Linux system fine. 
- laptop can ping outside hosts (www.yahoo.com etc)
- laptop CANNOT access any web site

I started the browser and tried to capture the traffic on with tcpdump and
got the following information:

22:16:17.452888 > myhost.homenet.cablespeed.com.domain: [udp sum ok]  20+ A? www.google.com. (32) (ttl 128, id 392, len 60)

22:16:17.547958 myhost.homenet.cablespeed.com.domain >  20 q: A? www.google.com. 1/4/0 www.google.com. A ns: google.com.[|domain] (DF) (ttl 64, id 0, len 148)

Why is the http traffic not making it?  ICMP (ping) packets can be seen.

Any idea why this is happening?

Thank you in advance.
Subba Rao
subba9 at cablespeed.com

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