On Sat, Mar 22, 2008 at 11:22 PM, Andrey Falko <ma3oxuct@(protected):
>
> On Sat, Mar 22, 2008 at 11:16 PM, Dan Cowsill <danthehat@(protected):
> > Hi folks,
> >
> > Today I had some really serious problems with my Gentoo router. I
> > could ping it, and all the network connections were in place and
> > functional, but no outside access. I looked into it and found that
> > the syslog was flooded with this:
> >
> >
> > Mar 22 21:25:55 localhost kernel: nf_conntrack: table full, dropping packet.
> > Mar 22 21:26:00 localhost kernel: printk: 11 messages suppressed.
> > Mar 22 21:26:00 localhost kernel: nf_conntrack: table full, dropping packet.
> > Mar 22 21:26:05 localhost kernel: printk: 16 messages suppressed.
> >
> >
> > These messages spanned a full 20 hours of the log. I understand that
> > conntrack is the connection tracking system that iptables uses. I
> > also understand that its maximum is something on the order of 65000
> > simultaneous connections. For a simple home network, I think we can
> > agree that I would probably never approach this number of connections
> > with normal use.
> >
> > So my question is this: what could have caused the router's
> > connection tracker to overflow?
> > --
> > Dan Cowsill
> > http://www.danthehat.net
> > --
> > gentoo-user@(protected)
> >
> >
>
> What type of 'net services do you run between your home network and
> the outside? Is there a possibility that someone out have put a denial
> of service attack on you?
> --
> gentoo-user@(protected)
>
>

I have SSH to a server, two open ports for bit torrent connections and
a few ranges for DCC transfers from irc.

The possibility of a DoS attack is pretty real, I imagine. Is there
any way I could be sure?

--
Dan Cowsill
http://www.danthehat.net
--
gentoo-user@(protected)