alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"🐾 - ℹ PRTG Network Monitoring 👀"; flow:to_server, stateless; threshold:type limit, track by_src,count 1, seconds 86400; tls_sni; content:"updatecheck.paessler.com"; nocase; reference:url,https://www.paessler.com/; metadata:created_at 2021_08_18, updated_at 2022_06_15; sid:3300780; rev:2; classtype:misc-activity;)