Detections
Analytics

4.2.8 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.

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

Note: First occurrence of a option takes precedence, Match set statements withstanding.

See Also

https://workbench.cisecurity.org/benchmarks/13007

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-7b.

Plugin: Unix

Control ID: 0705a1e69504ba4e97868021cb219c175cad1cfee27b20d4e00287147a8a2327