Auto ACL blocker

George Bonser gbonser at
Tue Jan 18 15:21:46 CST 2011

> From: Brian R. Watters 
> Sent: Tuesday, January 18, 2011 1:14 PM
> To: Dorn Hetzel
> Cc: nanog at
> Subject: Re: Auto ACL blocker
> Agreed, time to live in the ACL is critical as well .. this is primary
> to be used to stop sweeps and penetration testing .. We have SNORT
> deployed now but the process is still manual on the back end and of
> course does not respond in the time required.

I suppose you could use tcp wrappers to be creative and launch netcat to "bend" the connection right back to the originator so they spend all their time hacking themselves.

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