title: Disabling Linux Firewall author: keyboardcrunch date: 10/10/2020 modified: null description: Detection of Linux firewall being disabled. mitre: tactic: Defense Evasion technique: T1562 subtechnique: null operating_system: linux query: (SrcProcName In Contains ("service","chkconfig") AND SrcProcCmdLine In Contains ("off","stop") AND SrcProcCmdLine ContainsCIS "tables") OR (TgtProcName = "systemctl" AND TgtProcCmdLine In Contains ("stop","disable") AND TgtProcCmdLine Contains "firewalld") false_positives: null tags: null