[Gllug] [OT] Netgear DG834 and DOS attacks

[Chris Bell]

On Wed 20 Jul, Wiehe, Simon wrote:
> 
> Does anyone use a Netgear DG834 ?
> 
> I am being bombarded with DOS attacks from one machine based in Russia. Port Scans, lo
> ads of probes etc. Is there any way to block incoming access from a particular server/
> domain/ip address at the router level?
> 
> Thanks
> 
> Simon


   I decided to try to learn more about firewalling by going rather OTT. I
have an old 486 IPCop box sandwiched between two other old boxes, both
acting as invisible bridge + iptables firewall. Both bridges are running a
basic Debian Sarge installation with added bridge-utils, and will drop (not
reject) anything they do not wish to forward or accept, with a few port-scan
rules, etc, from iptables examples. They are not visible from outside, so
rather difficult to break. I have made provisions for very selective access
to the outer box for admin only as it is otherwise firewalled out.

-- 
Chris Bell

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