""ET POLICY Observed IP Lookup Domain (l2 .io in TLS SNI)""
SID: 2024833
Revision: 1
Class Type: policy-violation
Metadata: attack_target Client_Endpoint, created_at 2017_10_10, deployment Perimeter, performance_impact Moderate, signature_severity Informational, updated_at 2017_10_10
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: 443
Flow: established,to_server
Contents:
- Value: "|00 00 05|l2.io"
Within:
PCRE:
Special Options:
- nocase