ET INFO Observed Port Mapping/Tunneling Service Domain (portmap .io) in TLS SNI
Sourceet/open
CreatedJuly 15, 2025
UpdatedJuly 15, 2025
Classificationmisc-activity
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed Port Mapping/Tunneling Service Domain (portmap .io) in TLS SNI"; flow:established,to_server; tls.sni; dotprefix; content:".portmap.io"; fast_pattern; endswith; reference:url,portmap.io; classtype:misc-activity; sid:2063498; rev:1; metadata:attack_target Client_Endpoint, created_at 2025_07_15, deployment Perimeter, confidence High, signature_severity Informational, updated_at 2025_07_15; target:src_ip;)
References
| url | portmap.io |
Metadata
attack targetClient_Endpoint
created at2025_07_15
deploymentPerimeter
confidenceHigh
signature severityInformational
updated at2025_07_15
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