ESXI-06-000025 - The 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 ACLs.

Solution

To set the PermitTunnel setting, add or correct the following line in '/etc/ssh/sshd_config':

PermitTunnel no

See Also

http://iasecontent.disa.mil/stigs/zip/U_VMware_vSphere_6-0_ESXi_V1R5_STIG.zip

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Group-ID|V-63219, Rule-ID|SV-77709r1_rule, STIG-ID|ESXI-06-000025, Vuln-ID|V-63219

Plugin: Unix

Control ID: dbd6d57a4c3b69c2fa4aca9eccd748da9ad191b76a28f127d60a61dd265e1b0d