Basic Cisco Router Configuration

Assumptions

The following is a list of assumptions, they don’t specifically have to be used and can be modified to suit your setup.

• Using “Dialer0” interface to connect to ISP
• Using CHAP for authentication
• Using DHCP IP assignment from ISP
• Using Google name servers
• Using standard MTU size (1452)

Configuration

Enable Terminal Monitoring

enable
terminal monitor

Change Host Name

enable
configure terminal
hostname <name>
exit

Configure Enable Password (Hashed)

enable
configure terminal
enable secret <password>
exit

Enable HTTPS Server

enable
configure terminal
ip http secure-server
exit

Disable HTTP Server

enable
configure terminal
no ip http server
exit

Configure Name Servers

enable
configure terminal
ip name-server 8.8.8.8
ip name-server 8.8.4.4
exit

Configure Dialer0 Interface

enable
configure terminal
interface dialer0
description <name>
ip address negotiated
ip mtu 1452
ip nat outside
encapsulation ppp
no ip redirects
no ip proxy-arp
ip virtual-reassembly max-reassemblies 256
dialer pool 1
dialer-group 1
no cdp enable
ppp authentication chap pap callin
ppp chap hostname <ispusername>
ppp chap password <isppassword>
exit

Route Traffic to Dialer0

enable
configure terminal
ip route 0.0.0.0 0.0.0.0 Dialer0
exit

Configure NTP Server

enable
configure terminal
ntp server <ntpipaddress> source Dialer0 perfer
exit

Add Username

enable
configure terminal
username <name> privilege 15 secret <password>
exit

Disable Synchronous Logging

enable
configure terminal
line vty 0
logging synchronous
exit
line con 0
logging synchronous
exit

Disable Console and Shell Timeout

enable
configure terminal
line con 0
no exec-timeout
exit

Login Banner

enable
configure terminal
banner login &
*******************************************
*              Message here               *
*******************************************&
exit

Configure Ethernet Port 1

enable
configure terminal
description FastEthernet_Port1
ip address 192.168.0.1
duplex full
speed 100

Configure DHCP

enable
configure terminal
ip dhcp pool LAN_DHCP
import all
network 192.168.0.10 255.255.255.0
default-router 192.168.0.1
dns-server 192.168.0.1

Disable CDP Broadcasts

enable
configure terminal
no cdp run

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