Port Security, Telnet dan SSH pada perangkat Cisco

PORT SECURITY

1. Password Console

Router(config)#username admin password cisco

Router(config)#line console 0

Router(config-line)#login local

Router(config-line)#exit

Router(config)#exit

Router#exit

User Access Verification

Username: admin

Password:

Router>

2. Password Privilege

Contoh

Router>enable

Router#configure terminal

Router(config)#enable password cisco

Router(config)#enable secret class

Router(config)#exit

Router#

Router#disable

Router>

Router>enable

Password:

Router#

TELNET

Contoh

Router(config)#hostname Router1

Router1(config)#line vty 0 4

Router1(config-line)#password aman

Router1(config-line)#login

Mencoba login telnet

PC>telnet 10.10.2.1

Trying 10.10.2.1 …Open

User Access Verification

Password:

R1>

SSH

Contoh

Router1(config)#username cisco password ccna

Router1(config)#ip domain name cisco.com

Router1(config)#crypto key generate rsa

The name for the keys will be: s1.cisco.com

How many bits in the modulus [512]: 1024

% Generating 1024 bit RSA keys, keys will be non-exportable...[OK]

Router1(config)#line vty 0 15

Router1(config-line)#transport input ssh

Router1(config-line)#login local

Router1(config-line)#ip ssh version 2

Router1(config)#exit

Pengujian

PC>ssh –l cisco 10.10.2.1