5.2.7 Ensure SSH HostbasedAuthentication is disabled

Information

The HostbasedAuthentication parameter specifies if authentication is allowed through trusted hosts via the user of .rhosts , or /etc/hosts.equiv , along with successful public key client host authentication. This option only applies to SSH Protocol Version 2.

Rationale:

Even though the .rhosts files are ineffective if support is disabled in /etc/pam.conf, disabling the ability to use .rhosts files in SSH provides an additional layer of protection.

Solution

Edit the /etc/ssh/sshd_config file to set the parameter as follows:

HostbasedAuthentication no

See Also

https://workbench.cisecurity.org/files/3738

Item Details

Category: ACCESS CONTROL, IDENTIFICATION AND AUTHENTICATION

References: 800-53|AC-14a., 800-53|IA-5

Plugin: Unix

Control ID: 8401b7b3a8857a8cea27438dcd77c2a293cdde6bf85c8fae88e10002a3e23b31