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| author | Ermal Luçi <eri@pfsense.org> | 2008-08-02 22:24:45 +0000 |
|---|---|---|
| committer | Ermal Luçi <eri@pfsense.org> | 2008-08-02 22:24:45 +0000 |
| commit | 4ae45b1093b1a2fda98b263a5cffce9689ad109a (patch) | |
| tree | c770e69156a527cbe1deb11a288dc3315c9423ca /usr/local/share/protocols/ntp.pat | |
| parent | b5a7edb1ca42023606cde872cb8b5339d3b9837a (diff) | |
| download | pfsense-4ae45b1093b1a2fda98b263a5cffce9689ad109a.zip pfsense-4ae45b1093b1a2fda98b263a5cffce9689ad109a.tar.gz | |
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.
Diffstat (limited to 'usr/local/share/protocols/ntp.pat')
| -rw-r--r-- | usr/local/share/protocols/ntp.pat | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/usr/local/share/protocols/ntp.pat b/usr/local/share/protocols/ntp.pat new file mode 100644 index 0000000..a24fb05 --- /dev/null +++ b/usr/local/share/protocols/ntp.pat @@ -0,0 +1,16 @@ +# (S)NTP - (Simple) Network Time Protocol - RFCs 1305 and 2030 +# Pattern attributes: good fast fast overmatch +# Protocol groups: time_synchronization ietf_draft_standard +# Wiki: http://www.protocolinfo.org/wiki/NTP +# +# This pattern is tested and is believed to work. + +# client|server +# Requires the server's timestamp to be in the present or future (of 2005). +# Tested with ntpdate on Linux. +# Assumes version 2, 3 or 4. + +# Note that ntp packets are always 48 bytes, so you should match on that too. + +ntp +^([\x13\x1b\x23\xd3\xdb\xe3]|[\x14\x1c$].......?.?.?.?.?.?.?.?.?[\xc6-\xff]) |
