i had a similar problem and i solved it by turning off the
tcp_window_scaling(/proc/sys/net/ipv4/tcp_window_scaling). our
linux-server was not able to communicate to some servers. i tried to
turn off the tcp_window_scaling on our linux-server and then it works.
try to turn off the window-scaling on
Does this problem only occur with SSH or do you see it happening with other
applications?
When running tcpdump did you look at all traffic on the server or only the
traffic you were interested in?
-Tom
Gordon Messmer wrote:
Tom Eastep wrote:
It doesn't "run shorewall" -- Shorewall is used t
Tom Eastep wrote:
>
> It doesn't "run shorewall" -- Shorewall is used to configure Netfilter
> on the box; once 'shorewall start' is finished, there is no Shorewall
> code running there at all.
I know, I understand how it works. I just didn't phrase that very well,
and I apologize.
If you we
Gordon Messmer wrote:
Tom Eastep wrote:
This is all fascinating but I can't, in my worse nightmares, think that
this has anything to do with Shorewall.
I'm having a hard time with that, too, except that I can only reproduce
the problem from inside that office LAN, which uses the Linux router
Tom Eastep wrote:
>
> This is all fascinating but I can't, in my worse nightmares, think that
> this has anything to do with Shorewall.
I'm having a hard time with that, too, except that I can only reproduce
the problem from inside that office LAN, which uses the Linux router
running shorewall
Gordon Messmer wrote:
Both of those appear to indicate that the server in the colo facility is
receiving the SYN packets. What possible reasons are there that it
would not reply with SYN+ACK?
This is all fascinating but I can't, in my worse nightmares, think that
this has anything to do wit
Last week, I started seeing very strange behavior in one of the networks
that I manage.
The office LAN uses a Linux firewall (running shorewall) which
masquerades their workstations over their DSL connection. There are
probably ~75 workstations in the office LAN.
Their mail server is in a coll
