18 Using security in your networkLogging onIf you set a password, the next time you access the switch, you areprompted for a username and password as shown in the (default usernamesare RW and RO).Enter a valid username and password and press Enter. You are thendirected to the CLI.For information about modifying the existing usernames, see Loginscreen"Setting the username and password" (page 35)Login screenConfiguring Security optionsEthernet Routing Switch 2500 Series security features provide three levelsof security for your LAN:• RADIUS-based security—limits administrative access to the switchthrough user authentication.• MAC address-based security—limits access to the switch based onallowed source MAC addresses.• EAPOL-based securityFigure 1 "Ethernet Routing Switch 2500 Series security feature" (page19) shows a typical campus configuration that uses the Ethernet RoutingSwitch 2500 security features. This example assumes that the switch, theteachers’ offices and classrooms, and the library are physically secured.The student dormitory can (or can not be) physically secure.Nortel Ethernet Routing Switch 2500 SeriesSecurity — Configuration and ManagementNN47215-505 (323165-B) 02.01 Standard4.1 19 November 2007Copyright © 2007, Nortel Networks.
