Securing Administrative Access to a Cisco Router
Configuring administrative access on the Cisco router is an important step toward network security. You can access all Cisco routers in various ways:
Console
VTY
Aux
SNMP
HTTP
Connection Through the Console Port
To protect administrative access to the routers, you must protect the console port via a password policy. You can store passwords locally on the router or use some kind of remote administration using a CiscoSecure Access Control Server authentication, authorization, and accounting (AAA) server. You can store passwords locally on the router or use Remote Authentication Dial-In User Service (RADIUS) or Terminal Access Controller Access Control System + (TACACS+) for remote AAA using CSACS.
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