The ESXi host SSH daemon must be configured to use only the SSHv2 protocol.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-207612	ESXI-65-000011	SV-207612r378610_rule		High

Description
SSH protocol version 1 suffers from design flaws that result in security vulnerabilities and should not be used. Only SSH protocol version 2 connections should be permitted.

STIG	Date
VMware vSphere 6.5 ESXi Security Technical Implementation Guide	2021-09-22

Details

Check Text ( C-7867r364235_chk )
From an SSH session connected to the ESXi host, or from the ESXi shell, run the following command: # grep -i "^Protocol" /etc/ssh/sshd_config If there is no output or the output is not exactly "Protocol 2", this is a finding.

Fix Text (F-7867r364236_fix)
From an SSH session connected to the ESXi host, or from the ESXi shell, add or correct the following line in "/etc/ssh/sshd_config": Add or correct the following line in "/etc/ssh/sshd_config": Protocol 2