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MediumSigmaHQ Marco Pedrinazzi (@pedrinazziM) (InTheCyber)

FortiGate - VPN SSL Settings Modified

Detects the modification of VPN SSL Settings (for example, the modification of authentication rules). This behavior was observed in pair with the addition of a VPN SSL Web Portal.

Detection logic

Detection requirements

Platform: Containers Linux macOS Windows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
Log source product: fortigate
Log source service: event

Known benign triggers

VPN SSL settings can be changed for legitimate purposes.

References

Links the source published beside this detection. Reference is the link the source wrote, unmodified. Class is decided by this catalogue from the host and path, not stated by the source. Cited by counts published detections citing the same resource, including this one, and the sources beneath it count the repositories this catalogue ingests, which is not the same as independent research.
Reference	Class	Cited by
docs.fortinet.com/document/fortigate/7.6.4/cli-reference/114404382/config-vpn-ssl-settings	Unclassified	Only this detection cites it
docs.fortinet.com/document/fortigate/7.6.4/fortios-log-message-reference/398/event	Unclassified	7
docs.fortinet.com/document/fortigate/7.6.4/fortios-log-message-reference/44546/44546-logid-event-config-attr	Unclassified	Only this detection cites it
www.fortiguard.com/psirt/FG-IR-24-535	Unclassified	7

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