""ET POLICY External IP Lookup SSL Cert Observed (ipinfo .io)""
SID: 2025330
Revision: 4
Class Type: policy-violation
Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Mac_OSX, affected_product Linux, attack_target Client_Endpoint, created_at 2018_02_07, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2023_12_22
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: any
Destination Network: $HOME_NET
Destination Port: any
Flow: established,to_client
Contents:
-
Value: "|16|"
-
Value: "|0b|"
-
Value: "|55 04 0a|"
-
Value: "|0d|Let's|20|Encrypt"
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Value: "|55 04 03|"
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Value: "|09|ipinfo.io"
Within: 10
PCRE:
Special Options: