From 4ae45b1093b1a2fda98b263a5cffce9689ad109a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ermal=20Lu=C3=A7i?= Date: Sat, 2 Aug 2008 22:24:45 +0000 Subject: Add protocol definitions needed by ipfw-classifyd. Basically they are copied from the ipfw-classifyd pfPort which inherits them from l7-filter project on sf.net. --- usr/local/share/protocols/telnet.pat | 15 +++++++++++++++ 1 file changed, 15 insertions(+) create mode 100644 usr/local/share/protocols/telnet.pat (limited to 'usr/local/share/protocols/telnet.pat') diff --git a/usr/local/share/protocols/telnet.pat b/usr/local/share/protocols/telnet.pat new file mode 100644 index 0000000..a93d17d --- /dev/null +++ b/usr/local/share/protocols/telnet.pat @@ -0,0 +1,15 @@ +# Telnet - Insecure remote login - RFC 854 +# Pattern attributes: good veryfast fast +# Protocol groups: remote_access obsolete ietf_internet_standard +# Wiki: http://www.protocolinfo.org/wiki/Telnet +# +# Usually runs on port 23 +# +# This pattern is lightly tested. + +telnet +# Matches at least three IAC (Do|Will|Don't|Won't) commands in a row. +# My telnet client sends 9 when I connect, so this should be fine. +# This pattern could fail on a unchatty connection or it could be +# matched by something non-telnet spewing a lot of stuff in the fb-ff range. +^\xff[\xfb-\xfe].\xff[\xfb-\xfe].\xff[\xfb-\xfe] -- cgit v1.1