Unexpected Modification of Sophos Firewall Rule
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About the rule
Rule Type
Anomaly
Rule Description
Alerts on unauthorized or out-of-schedule firewall rule changes.
Severity
Attention
Rule Requirement
Criteria
Action1:
actionname = "Rule Modified"
| 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)
| isanomalous(User with unusual Log source)
select Action1.HOSTNAME,Action1.USERNAME,Action1.SOURCE_IP,Action1.RULENAME
Detection
Execution Mode
Intelligent
Log Sources
Sophos
