SSH Server Key

MediumLevel 1Manual reviewaruba-cx

Description

This sequence describes configuring the SSH server keys.

How it is checked

Audit method: Manual review

This recommendation cannot be checked automatically. A scan lists it with these instructions when you pass --include-manual.

Run 'show ssh host-key' and confirm the SSH server host keys are strong: ECDSA (nistp256 or larger), ED25519, and RSA of at least 2048 bits. Regenerate weak keys with 'ssh host-key <type> ...'.

How it is fixed

Fix method: Guidance or infrastructure patch

To set ssh server key: ssh host-key <key-type> <curve/bits> To set a nistp256 ecdsa server-key: ssh host-key ecdsa ecdsa-sha2-nistp256 ecdsa host-key will be overwritten. Do you want to continue (y/n)? y to set an ed25519 server-key: ssh host-key ed25519 ed25519 host-key will be overwritten. Do you want to continue (y/n)? y To set a 256-bit RSA server-key: ssh host-key rsa bits 2048 rsa host-key will be overwritten. Do you want to continue (y/n)? y

Properties

Operating systems: Any
Tags: aruba-cxmanagement
Reference: CIS HPE Aruba Networking CX Switch Benchmark v1.0.1 - 1.2.6 SSH Server Key