virus/worms killing a network...

[David Malcolm]

On Sun, 2004-08-01 at 02:30 +0800, Dexter Ang wrote:
> Cristiano Soares wrote:
> > Hi All. Im desperate to get my network back working fine. Here is my 
> > situation.
> > 
> > I have a FC2 server that has two NICs. The first one is connect to my 
> > ADSL router, and the other one is connected to a network that receive 
> > IPs from that server through DHCPD service, and then the FC2 do the 
> > firewall/masquerade. All the 30 machines can browse nice until 2 or 
> > maybe more machines that has virus/worms get online. Ive seeing that 
> > W32.MsBlast is the cause of most of these link down problems, but now, 
> > it looks to be more than just w32.msblast. My queston is: IS THAT 
> > POSSIBLE TO INSTALL A SOFTWARE OR SOMETHING LIKE THAT IN THE FC2 SERVER 
> > TO PREVENT OR AT LEAST TO DETECT (by IP number) THE MACHINES THAT HAS 
> > THE VIRUS, SO IT DOENST KILL MY CONNECTION. Thanks in advance.
> > 
> 
> Wouldn't it be better to get rid of those viruses on the Windows 
> machines? Or, since it seems you've figured out which machines have 

Or just get rid of the Windows machines? :-P

/me runs

> viruses, maybe block them using iptables? I believe you can do MAC 
> Address filtering somehow with iptables, although I'm not familiar with 
> this. But I don't see the point. Getting rid of the viruses is the 
> better solution. Search for McAfee's Stinger on Google, or get virus 
> removal tools from Symantec.
> 
> dex
> 
>