Custom Signature for Maximum Connections

Hi, is there any signature for check the maximum number of connection that an attacker host can open to an Victim port? or I need to make a costom signature for that?

Hi,
You can definitly do that on the IPS, you would do this by making an atomic-ip signature looking for a tcp packet with only the SYN flag set to destination port 443. You would then add an event-count for the number of connections you need. Depending on the placement however this will flood the alarm channel with alerts, because outbound traffic etc will trigger this. Also obviously, this can be problematic with NAT.
I'm sure one of the ASA guys on these forums could give a much better answer than me as far as configuring the ASA.
From what i understand IIS has Dynamic IP filtering or something that can be used for this, although i've never set that up myself.
Thanks
Neil

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