ESXI-67-000025 - The ESXi host SSH daemon must not permit tunnels.

Information

OpenSSH has the ability to create network tunnels (layer 2 and layer 3) over an SSH connection. This function can provide similar convenience to a Virtual Private Network (VPN) with the similar risk of providing a path to circumvent firewalls and network Access Control Lists (ACLs).

Solution

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':

PermitTunnel no

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_VMW_vSphere_6-7_Y22M04_STIG.zip

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-239280r674769_rule, STIG-ID|ESXI-67-000025, Vuln-ID|V-239280

Plugin: Unix

Control ID: 11481ef198b18b60519cab6ca5379388675a4ea338639671be1c7f19ea965cd6