Or even better. Compile in inline mode, so that you don't create a "race"
condition with flexresp.
(Race == hoping that the RST beats the actual ACK from the attack back to the
attacker)
Joel
On Thu, Apr 05, 2007 at 05:16:47PM -0400, it looks like Paul Melson sent me:
> On 4/5/07, Lang, Robert <Robert.Lang@suny.edu> wrote:
> > Has anyone had any luck getting rule blocking working with Snortsam and
> > a Cisco ASA? It works like a charm with our Watchguard Firewall, but
> > with our PIX/ASA I always get a message that says "Error: [pix] Did not
> > receive a response waiting for logon prompt from PIX at x.x.x.x".
>
> Using telnet to manage firewalls? Tsk-tsk. :-)
>
> The problem is either that:
>
> 1) Cisco routers and firewalls by default skip the standard "login:"
> prompt most telnet servers offer up and go right to "Password:" Use
> the 'pix' directive in your snortsam conf file instead:
>
> pix 10.0.0.1 [telnetpass] [enablesecret] [config]
>
> 2) You *are* using the pix directive and you have AAA user
> authentication turned on on the PIX and it *is* generating a "login:"
> prompt. Use:
>
> pix 10.0.0.1 [user]/[password] [enablesecret] [config]
>
>
> Seriously, though, I would consider building Snort with flexresp and
> modifying those rules that pertain to you to fire off ICMP type 3 or
> TCP RST packets that will cause whatever firewall to drop the
> connection. Then you can turn telnet off. :-)
>
> PaulM
>
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