James Wiggs wrote:
Folks,
I've got a really bizarre problem on one of my Sid boxes. I have two boxes on a private subnet behind a LEAF router box. Both of them have static IP addresses and are running Sid (fully up to date as of last night). One of the boxes is experiencing network problems where it is incapable of connecting via certain protocols to certain hosts. For example, using Mozilla on the box, it connects to www.google.com and www.iso.org, but *not* to www.oasis-open.org or www.xml.org. The other box connects to all of them just fine. The Mozilla status bar just says "connecting to ..." and sits there. It never actually connects.
As another data point, the "working" box can connect to the NNTP server at news.rr.com, but the bad one can't. The boxes have the same /etc/hosts files, the same /etc/resolv.conf files, etc. The output of "netstat -rn" on both boxes is identical. Both are using 3c905B net cards. Neither has any suspicious stuff in its "ifconfig -a" listing. The working box is an Athlon, non-working box is a dual PII. Can any of you suggest a possible explanation for this? How on earth can the networking fail so *selectively* on the one box? It sounds like a firewalling issue, but neither box is running a local firewall. The firewalling is done at the router, which is almost completely closed off. I've *never* seen anything like this, and could really use some help...
Oh, yes: restarting networking and even rebooting the box have had no effect on the problem whatsoever.
I had some funny problems like that a week or so again.Turned out I had some funny firewall rules I'd forgotten about.
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Cheers John
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