Ensure 'SSL AES 256 encryption' is set for HTTPS access

HighLevel 1Automatedcisco-asa

Description

Sets the SSL encryption algorithm to AES 256. Given that the network may be prone to sniffing, the HTTP access to the security appliance must be secured with SSL or TLS protocols. A secure encryption algorithm must be used. Audited against the output of 'show running-config' (run 'terminal pager 0' first; 'more system:running-config' also works and shows unmasked secrets).

How it is checked

Audit method: Configuration pattern

Pattern: (?m)^ssl cipher tlsv1\.2 custom \"?[^\n]*AES256-SHA

How it is fixed

Fix method: Guidance or infrastructure patch

! For version 9.x, run the following command to enable AES 256 algorithm ssl cipher tlsv1.2 custom AES256-SHA

Properties

Operating systems: Any
Tags: cisco-asanetworkmanagement-plane
Reference: CIS Cisco ASA 9.x Firewall Benchmark v1.1.0 - 1.7.3 Ensure 'SSL AES 256 encryption' is set for HTTPS access

Check this host

Run this on a machine you are allowed to audit. The scan is read-only.

shell

tmaegis scan --target cisco-asa