Linux networking broken after pix installed.

From: Sanity (google@fretzel.net)
Date: 11/21/02 

From: google@fretzel.net (Sanity)
Date: 21 Nov 2002 08:06:59 -0800

I have a linux machine that was working fine before a new pix firewall
was installed on our network. If I reboot the machine in question back
into Windows NT all network functions work properly.

Here are some of the details,

1) Both Linux and Windows use DHCP to get an address, both are getting
the same address, gateway and DNS info.

2) While in linux I can ping and traceroute to hosts but can't ssh,ftp
or connect via web ports to any machine outside of our firewall. With
Windows running I can connect to the same hosts without any issues.

3) I have turned off advanced routing and TCP Explicit Congestion
Notification Support in the kernel and recompiled, rebooted. This did
not make any difference.

4) This is happening to other linux machines on the same network, we
only seem to get a full working network if we reboot into windows.

Any suggestions would be greatly appreciated.

Thanks.

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