On Sun, 3 Jan 1999, James Smallacombe wrote:

> uOn Sun, 3 Jan 1999, Gordon Soukoreff wrote:
> 
> > I have this outfit ( asshole ) relaying off my smtp host running
> qmail:  > > Jan 1 01:36:31 blahblah smtpd: 915183391.413662 tcpserver:
> any of your IPs.  If you're using a Cisco:
[snip..]
> 
> access-list 102 deny ip my.ip.net.block 0.0.0.255  (assuming you have a
> /24)
> 
> then on your border interface:
> 
> ip access-group 102 in
> 
> As a good netizen, you should also filter IPs other than yous from getting
> out of your network.  This way, nobody on your network can spoof outward.

I wish I had control of the Cisco box, however sadly My backbone provider
BC Tel does :(


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