alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET CHAT Gadu-Gadu IM Login Server Request"; flow:established,to_server; http.uri; content:"/appsvc/appmsg"; nocase; content:".asp"; nocase; content:"fmnumber="; content:"&version="; content:"&fmt="; http.host; content:"appmsg.gadu-gadu."; reference:url,piotr.trzcionkowski.pl/default.asp?load=/programy/pppgg_protokol.html; classtype:policy-violation; sid:2008295; rev:8; metadata:created_at 2010_07_30, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_20;)