Disable the identification (identd) server. Rationale: Identification protocol enables identifying a user's transmission control protocol (TCP) session. This information disclosure could potentially provide an attacker with information about users. Impact: To reduce the risk of unauthorized access, organizations should implement a security policy restricting network protocols and explicitly require disabling all insecure or unnecessary protocols such as the identification protocol (identd).
Disable the ident server. hostname(config)#no ip identd Default Value: Disabled by default