CCNA ICND2 Lab13 – CHAP Authentication

Ensurepass

Lab Tips:

PPP supports device authentication through the two following protocols: PPP Authentication Protocol (PAP) and Challenge Handshake Authentication Protocol (). processes the password through Basic MD5 HASH algorithm and sends the processed data. The authentication experiences three handshakes.

Topology:

Lab Requirements:

1. Specify a unique host name for the router.

2. Write the host name and password of the remote router.

3. Perform PPP encapsulation and CHAP authentication configuration on the WAN interface.

Note:

1. The user name must be the host name of the router.

2. In the global mode, configure each router’s user name and password on the other.

3. CHAP and PAP have almost the same configuration except that CHAP does not need to send the user name. CHAP parameters are specified in the ppp authentication command.

Lab Process:

Router(config)#hostname PS4-R1 Specify the unique host name

P4S-R1(config)#username PS4-R2 password cisco          / The user name and password of the remote router.

P4S-R1(config)#interface serial 1/1

P4S-R1(config-if)ip address 1.1.1.1 255.255.255.0

P4S-R1(config-if)#lock rate 64000

P4S-R1(config-if)#encapsulation ppp

P4S-R1(config-if)#ppp authentication pap chap        / Configure CHAP

P4S-R1(config-if)#no shutdown

Router(config)#hostname PS4-R2            / Configure the other device

P4S-R2(config)#usename PS4-R1 password cisco

P4S-R2(config)# interface serial 1/1

P4S-R2(config-if)#ip address 1.1.1.2 255.255.255.0

P4S-R2(config-if)#encapsulation ppp

P4S-R2(config-if)# ppp authentication chap

P4S-R2(config-if)#no shutdown





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