alert tcp $EXTERNAL_NET 119 -> $HOME_NET any (msg:"GPL MISC return code buffer overflow attempt"; flow:to_client,established,no_stream; content:"200"; isdataat:64,relative; pcre:"/^200\s[^\n]{64}/smi"; reference:bugtraq,4900; reference:cve,2002-0909; classtype:protocol-command-decode; sid:2101792; rev:10; metadata:created_at 2010_09_23, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)