TMA-SOPHOS-5.2

Ensure SSL/TLS inspection rules is enabled to all relevant firewall policies

높음레벨 2수동 검토sophos

설명

With SSL/TLS inspection rules, you can intercept and decrypt SSL and TLS connections over TCP, enabling Sophos Firewall to enforce secure connections between clients and web servers. SSL/TLS inspection enables the prevention of malware transmitted through encrypted connections. Reviewed in the Sophos Firewall web admin console (SFOS has no plain-text configuration export to audit offline).

점검 방법

감사 방식: 수동 검토

이 권장 사항은 자동으로 점검할 수 없습니다. --include-manual 옵션을 전달하면 스캔 결과에 이 지침과 함께 표시됩니다.

Navigate to 'Protect > Rules and policies > SSL/TLS inspection rules > SSL/TLS inspection settings'. Verify that 'Non-decryptable traffic > SSL 2.0 and SSL 3.0' is set to 'Reject' or 'Drop'. Verify that 'SSL compression' is set to 'Reject' or 'Drop'. Verify that 'When SSL/TLS connections exceed limit' is set to 'Drop' or 'Reject'. Verify that 'TLS 1.3 decryption' is set to 'Decrypt as 1.3'. Verify that 'Advanced settings > SSL/TLS engine' is set to 'Enabled'. (Full steps: CIS 5.2.)

조치 방법

조치 방식: 가이드 또는 인프라 패치

Navigate to 'Rules and policies > SSL/TLS inspection rules > SSL/TLS inspection settings'. Set 'Non-decryptable traffic > SSL 2.0 and SSL 3.0' to 'Reject' or 'Drop'. Set 'SSL compression' to 'Reject' or 'Drop'. Set 'When SSL/TLS connections exceed limit' to 'Drop' or 'Reject'. Set 'TLS 1.3 decryption' to 'Decrypt as 1.3'. Set 'Advanced settings > SSL/TLS engine' to 'Enabled'. Navigate to configured 'SSL/TLS inspection rule' and set the 'Action' to 'Decrypt' and 'Log connections' is checked. Set the rule position to above rules configured with 'Action' set to 'Don't decrypt'. Navigate to the configured Firewall rules. Set 'Scan HTTP and decrypted HTTPS' and 'Use zero-day protection' is checked.

속성

운영 체제: 모두
태그: sophoscrypto
참고 자료: CIS Sophos Firewall v22 Benchmark v1.0.0 - 5.2 Ensure SSL/TLS inspection rules is enabled to all relevant firewall policies