Yes, it would... 

The machine sends SYNs outbound to the remote hosts? Does it send ICMP
requests? This sounds more like a topology / firewall problem than a host
problem. If that machine never receives a SYN/ACK back then something is
blocking outgoing TCP connections..? 

Andrew 

-----Original Message-----
From: Paul Heinlein [mailto:heinlein@...] 
Sent: Sunday, July 10, 2005 2:42 AM
To: gentoo-sparc@g.o
Subject: Re: [gentoo-sparc] TCP connect() times out

On Sun, 10 Jul 2005, Andrew Ruef wrote:

> I had a similar problem on 2.4, I was unable to initiate any TCP 
> connections from the local host to the local host... never figured 
> out what it was (upgraded to 2.6).

TCP over loopback works fine. TCP to LAN hosts works fine. UDP and 
ICMP to any hosts works fine. Inbound TCP from anywhere works fine.

It's only routed (non-LAN) outbound TCP that's the problem -- and only 
from the problem host; all my other machines on the same LAN are still 
in good shape.

I ran tcpdump on the problem host and saw only SYNs being sent. I ran 
tcpdump on the target host and never saw the inbound packets.

There are no iptables rules; it's ACCEPT across the board.

Ordinarily, I'd look for routing problems, but routing would also 
affect UDP and ICMP, right?

-- Paul Heinlein <heinlein@...>
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