[clug] Networking slows down to unusable levels until restarted; Fast upon resumption
christopher.giffard at gmail.com
Thu Oct 1 19:59:15 MDT 2009
Thanks for the swift response!
As far as a compromised box - nothing's impossible - but the firewall
config is pretty tight, and I keep a close eye on traffic. Postfix
requires authentication. External port scans return nothing suspicious.
I think this is something to do with network cards/drivers, since the
system worked fine with the old network hardware, but I have no idea
how to diagnose the issue.
There's about 2.0MiB of constant traffic currently running through
both NICs (most of that I imagine would be my remote X connection &
gnome-system-monitor.) CPU and memory usage are at normal levels.
On 02/10/2009, at 11:35 AM, Brett Worth wrote:
> Perhaps there is in fact a lot of network traffic. You could do a
> tcpdump on the external
> interface to see if you do have traffic.
> Downing the interface might just be interrupting the flow.
> Is it possible this system has been compromised and is spamming the
> world? Open relay?
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