How does an authentication system be different from a firewall into functioning?

Authentication verses firewall

User Authentication and Authorization

A significant advanced firewall security feature is user-oriented authentication that is the capability to allow or deny certain connections based upon user name and password combination or several other, more advanced identification schemes.

Different authentication technologies are obtainable. The simplest forms need typing a user name and a reusable password.

Such method is appropriate for controlling only outbound Internet access, since password guessing and eavesdropping attacks are probable on inbound access attempts.

Firewalls can log network activity within detail, filter the log to creates meaningful reports, and aware a network administrator while the network has reached a predefined threshold.