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Diffstat (limited to 'usr/local/share/protocols/rtp.pat')
-rw-r--r-- | usr/local/share/protocols/rtp.pat | 33 |
1 files changed, 0 insertions, 33 deletions
diff --git a/usr/local/share/protocols/rtp.pat b/usr/local/share/protocols/rtp.pat deleted file mode 100644 index 61fcd8e..0000000 --- a/usr/local/share/protocols/rtp.pat +++ /dev/null @@ -1,33 +0,0 @@ -# RTP - Real-time Transport Protocol - RFC 3550 -# Pattern attributes: ok overmatch undermatch fast fast -# Protocol groups: streaming_video ietf_internet_standard -# Wiki: http://www.protocolinfo.org/wiki/RTP -# Copyright (C) 2008 Matthew Strait, Ethan Sommer; See ../LICENSE -# -# RTP headers are *very* short and compact. They have almost nothing in -# them that can be matched by l7-filter. As RTP connections take place -# between even numbered ports, you should probably check for that before -# applying this pattern. If you want to match them along with their -# associated SIP packets, you might try setting up some iptables rules -# that watch for SIP packets and then also match any other UDP packets -# that are going between the same two IP addresses. -# -# I think we can count on the first bit being 1 and the second bit being -# 0 (meaning protocol version 2). The next two bits could go either way, -# but in the example I've seen, they are zero, so I'll assume they are -# usually zero. The next four bits are a count of "contributing source -# identifiers". I'm not sure how big that could be, but in the example -# I've seen, they're zero, so I'll assume they're usually zero. So that -# gives us ^\x80. The next bit is a tossup. Next is the payload type, 7 -# bits. I've taken likely values from the WireShark code: 0-34, 96-127 -# (decimal). The rest of the header is random numbers (sequence number, -# timestamp, synchronization source identifier), so that's no help at -# all. - -rtp -^\x80[\x01-"`-\x7f\x80-\xa2\xe0-\xff]?..........*\x80 - -# Might also try this. It's a bit slower (one packet and not too much extra -# regexec load) and a bit more accurate: -#^\x80[\x01-"`-\x7f\x80-\xa2\xe0-\xff]?..........*\x80.*\x80 - |