# (C) Copyright 2001-2004, Martin Roesch, Brian Caswell, et al.
#    All rights reserved.
# $Id$
#-------------
# MULTIMEDIA RULES
#-------------
# These signatures look for people using streaming multimedia technologies.
# Using streaming media may be a violation of corporate policies.


alert tcp $EXTERNAL_NET 80 -> $HOME_NET any (msg:"MULTIMEDIA Windows Media download"; flow:from_server,established; content:"Content-Type|3A|"; nocase; pcre:"/^Content-Type\x3a\s*(?=[av])(video\/x\-ms\-(w[vm]x|asf)|a(udio\/x\-ms\-w(m[av]|ax)|pplication\/x\-ms\-wm[zd]))/smi"; classtype:policy-violation; sid:1437; rev:6;)

alert tcp $HOME_NET any -> $EXTERNAL_NET 80 (msg:"MULTIMEDIA Quicktime User Agent access"; flow:to_server,established; content:"User-Agent|3A| Quicktime"; nocase; classtype:policy-violation; sid:1436; rev:5;)
alert tcp $EXTERNAL_NET 80 -> $HOME_NET any (msg:"MULTIMEDIA Shoutcast playlist redirection"; flow:from_server,established; content:"Content-type|3A| audio/x-scpls"; nocase; content:"|0A|"; within:2; classtype:policy-violation; sid:1439; rev:5;)
alert tcp $EXTERNAL_NET 80 -> $HOME_NET any (msg:"MULTIMEDIA Icecast playlist redirection"; flow:from_server,established; content:"Content-type|3A| audio/x-mpegurl"; nocase; content:"|0A|"; within:2; classtype:policy-violation; sid:1440; rev:5;)
alert tcp $HOME_NET any -> 64.245.58.0/23 any (msg:"MULTIMEDIA audio galaxy keepalive"; flow:established; content:"E_|00 03 05|"; depth:5; classtype:misc-activity; sid:1428; rev:5;)
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"MULTIMEDIA realplayer .ram playlist download attempt"; flow:to_server,established; uricontent:".ram"; nocase; flowbits:set,realplayer.playlist; flowbits:noalert; classtype:misc-activity; sid:2419; rev:3;)
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"MULTIMEDIA realplayer .rmp playlist download attempt"; flow:to_server,established; uricontent:".rmp"; nocase; flowbits:set,realplayer.playlist; flowbits:noalert; classtype:misc-activity; sid:2420; rev:3;)
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"MULTIMEDIA realplayer .smi playlist download attempt"; flow:to_server,established; uricontent:".smi"; nocase; flowbits:set,realplayer.playlist; flowbits:noalert; classtype:misc-activity; sid:2421; rev:3;)
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"MULTIMEDIA realplayer .rt playlist download attempt"; flow:to_server,established; uricontent:".rt"; nocase; flowbits:set,realplayer.playlist; flowbits:noalert; classtype:misc-activity; sid:2422; rev:3;)
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"MULTIMEDIA realplayer .rp playlist download attempt"; flow:to_server,established; uricontent:".rp"; nocase; flowbits:set,realplayer.playlist; flowbits:noalert; classtype:misc-activity; sid:2423; rev:3;)