Ensure port lockdown for self IP is set

보통레벨 1자동f5-bigip

설명

to secure the BIG-IP system from unwanted connection attempts on self-IP. FAILs if any self IP has allow-service all or default (Port Lockdown must be Allow None or Allow Custom). Audited against tmsh output with defaults shown: save the concatenated output of 'tmsh list auth password-policy all-properties', 'tmsh list auth source all-properties', 'tmsh list auth remote-user all-properties', 'tmsh list auth radius all-properties', 'tmsh list sys httpd all-properties', 'tmsh list sys sshd all-properties', 'tmsh list sys global-settings all-properties', 'tmsh list cli global-settings all-properties', 'tmsh list sys ntp', 'tmsh list sys snmp all-properties', 'tmsh list sys syslog' and 'tmsh list net self all-properties'. Patterns are scoped to the named top-level block.

점검 방법

감사 방식: 구성 패턴

패턴: (?m)^net self \S+ \{\n(?:[ \t]+[^\n]*\n)*?[ \t]+allow-service (?:all|default)\b

조치 방법

조치 방식: 가이드 또는 인프라 패치

tmsh modify net self <self-ip> allow-service none (or) tmsh modify net self <self-ip> allow-service replace-all-with { tcp:443 } tmsh save sys config # CIS guidance: 1-Log in to the Configuration utility. 2-Go to Network > Self IPs. 3-Select the relevant self IP address. 4-If the specified interface does not need to listen to incoming connections ( Example BGP ,BDF ..etc) , set "Port Lockdown" to "Allow None" 5-If the specified interface need to listen for incoming connections , set "Port Lockdown" to "Allow Custom". Then in the "Custom List" add needed ports only.

속성

운영 체제: 모두
태그: f5-bigipmanagement
참고 자료: CIS F5 Networks Benchmark v1.0.0 - 5.3 Ensure port lockdown for self IP is set

이 호스트 점검하기

감사 권한이 있는 시스템에서 실행하세요. 스캔은 읽기 전용입니다.

shell

tmaegis scan --target f5-bigip