The SSH daemon must only listen on management network addresses unless authorized for uses other than management.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
GEN005504	GEN005504	GEN005504_rule		Medium

Description

The SSH daemon should only listen on network addresses designated for management traffic. If the system has multiple network interfaces and SSH listens on addresses not designated for management traffic, the SSH service could be subject to unauthorized access. If SSH is used for purposes other than management, such as providing an SFTP service, the list of approved listening addresses may be documented.

STIG	Date
VMware ESXi v5 Security Technical Implementation Guide	2013-01-15

Details

Check Text ( C-GEN005504_chk )
Disable lock down mode. Enable the ESXi Shell. Check the SSH daemon configuration for listening network addresses. # grep -i ListenAddress /etc/ssh/sshd_config | grep -v '^#' Re-enable lock down mode. If no configuration is returned, or if a returned Listen configuration contains addresses not designated for management traffic, this is a finding.

Fix Text (F-GEN005504_fix)
Disable lock down mode. Enable the ESXi Shell. Edit the SSH daemon configuration and add/modify the "ListenAddress" network addresses. # vi /etc/ssh/sshd_config Re-enable lock down mode.