PPP with PAP and CHAP Authentication
Looking at this web site , in PPP authentication commands:
http://www.howtonetwork.net/public/department98.cfm
When configured PPP with PAP or CHAP authentication, I have noticed the configuration is not the same on both routers that are authenticating each other:
Example for PAP Authentication:
Example for CHAP Authentication:
I wonder if PPP authentication works in Client/Server way ? in the case authentication is set up in Server/Server way, how do we configure that ?
http://www.howtonetwork.net/public/department98.cfm
When configured PPP with PAP or CHAP authentication, I have noticed the configuration is not the same on both routers that are authenticating each other:
Example for PAP Authentication:
R1(config)#int s1/1
R1(config-if)#encapsulation ppp
R1(config-if)#ppp authentication pap
R1(config-if)#exit
R1(config)#username R3 password cisco
R3(config)#int s1/1
R3(config-if)#ppp pap sent-username R3 password cisco
Example for CHAP Authentication:
R1(config)#int s1/1
R1(config-if)#encapsulation ppp
R1(config-if)#ppp authentication chap
R1(config-if)#exit
R1(config)#username R3 password cisco
R3(config-if)#int s1/1
R3(config-if)#encapsulation ppp
R3(config-if)#ppp chap hostname R3
R3(config-if)#ppp chap password cisco
I wonder if PPP authentication works in Client/Server way ? in the case authentication is set up in Server/Server way, how do we configure that ?
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I also am not sure why they put :
on R1:
R1(config)#username R3 password cisco
and on R3:
R3(config-if)#ppp chap hostname R3
on R1:
R1(config)#username R3 password cisco
and on R3:
R3(config-if)#ppp chap hostname R3
ASKER
For consistency sake:
PPP PAP code above is missing something, it gotto be this way:
PPP PAP code above is missing something, it gotto be this way:
R3(config)#int s1/1
R3(config-if)#encapsulation ppp
R3(config-if)# ppp authentication pap
R3(config-if)#ppp pap sent-username R3 password cisco
ASKER
Regarding PAP authentication, disregard the configuration above. This one worked for me:
R1(config)#int s1/0
R1(config-if)ip address 1.1.1.1 255.255.255.0
R1(config-if)#encapsulation ppp
R1(config-if)#ppp authentication pap
R1(config-if)#exit
R1(config)#username R2 password cisco
R2(config)#int s1/0
R2(config-if)ip address 1.1.1.2 255.255.255.0
R2(config-if)#encapsulation ppp
R2(config-if)#ppp pap sent-username R2 password cisco
ASKER
This final configuration worked for me for PAP and CHAP:
PPP with PAP authentication:
in this configuration R1 is PAP Server and R2 is PAP client
R1(config)#int s1/0
R1(config-if)ip address 1.1.1.1 255.255.255.0
R1(config-if)#encapsulation ppp
R1(config-if)#ppp authentication pap
R1(config-if)#exit
R1(config)#username R2 password cisco
R2(config)#int s1/0
R2(config-if)ip address 1.1.1.2 255.255.255.0
R2(config-if)#encapsulation ppp
R2(config-if)#ppp pap sent-username R2 password cisco
=================================
PPP with CHAP authentication:
in this configuration R1 is CHAP Client and R2 is CHAP Server
R1#configure terminal
R1(config)#interface serial 1/0
R1(config-if)ip address 1.1.1.1 255.255.255.0
R1(config-if)#encapsulation ppp
R1(config-if)#ppp chap hostname R1
R1(config-if)#ppp chap password cisco
R2#configure terminal
R2(config)#username R1 password cisco
R2(config)#interface serial 1/0
R2(config-if)ip address 1.1.1.2 255.255.255.0
R2(config-if)#encapsulation ppp
R2(config-if)#ppp authentication chap
=================================
ASKER
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