Date: Tue, 9 Sep 2003 22:43:16 -0400 From: Don Bowman <don@sandvine.com> To: "'freebsd-ipfw@freebsd.org'" <freebsd-ipfw@freebsd.org> Subject: regex match in ipfw rule? Message-ID: <FE045D4D9F7AED4CBFF1B3B813C85337027427C1@mail.sandvine.com>
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has anyone ever considered adding a regular expression match type to ipfw? it seems like this might be very useful. To be efficient, and anchored, I guess it would need to be available for both IP and TCP and perhaps other protocols (e.g. ip payload, tcp payload). This could be used to match e.g. code-red style worms. one barrier is that there is not currently regex support in kernel, but pcre could probably be compiled for it.
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