Cisco WS-C2960-24TC-S Software Guide - Page 140

Protecting Access to Privileged EXEC Commands Chapter 8 Configuring Switch-Based Authentication Beginning in privileged EXEC mode, follow these steps to configure encryption for enable and enable secret passwords: Step 1 Step 2 Command configure terminal enable password [level level] {password | encryption-type encrypted-password} or enable secret [level level] {password | encryption-type encrypted-password} Step 3 service password-encryption Step 4 Step 5 end copy running-config startup-config Purpose Enter global configuration mode. Define a new password or change an existing password for access to privileged EXEC mode. or Define a secret password, which is saved using a nonreversible encryption method. • (Optional) For level, the range is from 0 to 15. Level 1 is normal user EXEC mode privileges. The default level is 15 (privileged EXEC mode privileges). • For password, specify a string from 1 to 25 alphanumeric characters. The string cannot start with a number, is case sensitive, and allows spaces but ignores leading spaces. By default, no password is defined. • (Optional) For encryption-type, only type 5, a Cisco proprietary encryption algorithm, is available. If you specify an encryption type, you must provide an encrypted password-an encrypted password that you copy from another switch configuration. Note If you specify an encryption type and then enter a clear text password, you can not re-enter privileged EXEC mode. You cannot recover a lost encrypted password by any method. (Optional) Encrypt the password when the password is defined or when the configuration is written. Encryption prevents the password from being readable in the configuration file. Return to privileged EXEC mode. (Optional) Save your entries in the configuration file. If both the enable and enable secret passwords are defined, users must enter the enable secret password. Use the level keyword to define a password for a specific privilege level. After you specify the level and set a password, give the password only to users who need to have access at this level. Use the privilege level global configuration command to specify commands accessible at various levels. For more information, see the "Configuring Multiple Privilege Levels" section on page 8-7. If you enable password encryption, it applies to all passwords including username passwords, authentication key passwords, the privileged command password, and console and virtual terminal line passwords. To remove a password and level, use the no enable password [level level] or no enable secret [level level] global configuration command. To disable password encryption, use the no service password-encryption global configuration command. Catalyst 2960 Switch Software Configuration Guide 8-4 OL-8603-04