Information
Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks.
Password complexity is one factor of several that determine how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.
NOTE: Nessus has not performed this check. Please review the benchmark to ensure target compliance.
Solution
Configure the BIG-IP appliance to use a properly configured authentication server to enforce password complexity by requiring that at least one numeric character be used.