alert tcp $EXTERNAL_NET any -> $HOME_NET 135 (msg:"GPL NETBIOS DCERPC IActivation bind attempt"; flow:established,to_server; flowbits:set,dce.isystemactivator.bind; content:"|05|"; byte_test:1,!&,16,3,relative; content:"|0B|"; within:1; distance:1; content:"|B8|J|9F|M|1C|}|CF 11 86 1E 00| |AF|n|7C|W"; within:16; distance:29; classtype:protocol-command-decode; sid:2103275; rev:4; metadata:created_at 2010_09_23, signature_severity Informational, updated_at 2024_03_14;)