43.2.2.1. Protect portmap With TCP Wrappers

43.2.2.1. Protect portmap With TCP Wrappers

It is important to use TCP Wrappers to limit which networks or hosts have access to the portmap service since it has no built-in form of authentication.

Further, use only IP addresses when limiting access to the service. Avoid using hostnames, as they can be forged by DNS poisoning and other methods.


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