alert tcp $EXTERNAL_NET !$HTTP_PORTS -> $HOME_NET any (msg:"REMOTE [PTsecurity] LiteManager"; flow:established, to_client; dsize:4; content:"|0000|"; depth:2; stream_size:server, >,0; stream_size:server, <,14; stream_size:client, >,0; stream_size:client, <,22; flowbits:isset, FB206141_3; flowbits:unset, FB206141_3; reference:url, rules.ptsecurity.com; classtype:policy-violation; sid:11001885; rev:6;)