Unauthorized Sophos Firewall Rule Deletion Detected

Last updated on:

About the rule

Rule Type

Anomaly

Rule Description

Alerts on deletion of firewall rules by unapproved users in Sophos.

Severity

Critical

Rule Requirement

Criteria

Action1: actionname = "sonicwall_firewall_rule_deleted" | isanomalous(User at an unusual Time) | isanomalous(User with abnormal Count) | isanomalous(Log source at an unusual Time) | isanomalous(Log source with abnormal Count) | isanomalous(Log source with unusual Username) select Action1.HOSTNAME,Action1.USERNAME,Action1.SOURCE_IP,Action1.MESSAGE

Detection

Execution Mode

Intelligent

Log Sources

SonicWall