alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET INFO web.go HTTP Server Value in Response"; flow:established,to_client; http.header; content:"Server|3a 20|web|2e|go|0d 0a|"; fast_pattern; threshold:type limit,seconds 300,count 1,track by_src; reference:url,github.com/bnkamalesh/webgo; classtype:misc-activity; sid:2049804; rev:1; metadata:attack_target Client_and_Server, created_at 2023_12_20, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Informational, updated_at 2023_12_20, reviewed_at 2024_10_03; target:dest_ip;)