Cisco encrypt password

WHAT

If you ever add usernames on a cisco .. you want them to be encrypted ( and not be viewable at any "show running-config" ) .. here's how

HOW

Router#configure terminal
Router(config)#service password-encryption
Router(config)#username newuser privilege 15 secret justapassword

Don't use non-encrypted or just "password" (it can be reversed). Enjoy.