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

高级别 2人工审核sophos

说明

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).

检查方式

审计方法: 人工审核

此项建议无法自动检查。当您传入 --include-manual 时，扫描结果会列出该项并附带这些说明。

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.)

修复方式

修复方法: 操作指南或基础设施补丁

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.

属性

操作系统: 任意
标签: sophoscrypto
参考: CIS Sophos Firewall v22 Benchmark v1.0.0 - 5.2 Ensure SSL/TLS inspection rules is enabled to all relevant firewall policies