alert udp $HOME_NET 9993 -> $EXTERNAL_NET 9993 (msg:"ET INFO ZeroTier Related Activity (udp)"; dsize:137; content:"|77 8c de 71 90|"; offset:8; depth:5; fast_pattern; threshold:type limit,count 1,seconds 120, track by_src; reference:url,zerotier.com; classtype:bad-unknown; sid:2039784; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_11_15, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_11_15; target:src_ip;)