Rule History

alert dns $HOME_NET any -> any any (msg:"ET DNS DNS Query for vpnoverdns - indicates DNS tunnelling"; dns.query; content:"tun.vpnoverdns.com"; depth:18; fast_pattern; nocase; endswith; reference:url,osint.bambenekconsulting.com/manual/vpnoverdns.txt; classtype:bad-unknown; sid:2018438; rev:6; metadata:created_at 2014_05_02, confidence Medium, signature_severity Minor, updated_at 2020_09_17;)