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SubjectRe: [PATCH] chaostables
Date
* Jan Engelhardt wrote, On 08/03/07 20:26:
> xt_portscan needs to keep track of what packets the machine has already
> seen. So on the first SYN, the connection is marked with "1". (Then we
> send our SYN-ACK... and the connection turns ESTABLISHED.) The next
> packet that is received will be an ACK or an RST. But it must come
> _exactly after_ the SYN, so just using --tcp-flags ACK will not work. A
> state which can be remembered is required. For that, an automaton is
> used, whose state is saved in the connection mark.

There would me more point in having this as a new match if it didn't
trample on the connection mark, but used it's own slot or flag-bit.

Sam

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