Solved

PPP PAP and CHAP example

Posted on 2014-11-28
2
175 Views
Last Modified: 2014-12-13
in the configuration below, I have configured PAP and CHAP and it worked in both cases, however I used one router as Server and one as Client.
PPP Configuration
=================
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

=================================

Open in new window



 I believe in real world there could be scenarios where there is one server authenticating multiple clients or multiple servers authenticating each others.

I guess in the scenario where one server is authenticating multiple clients , we might just need to add the following line on the server for as many clients as we have,  correct me if I am wrong:

RouterServer(config)#username client1 password cisco
RouterServer(config)#username client2 password cisco2
RouterServer(config)#username client3 password cisco3
etc....
but what about the scenario when 2 servers authenticate each other? can someone post an example ?

Thanks
0
Comment
Question by:jskfan
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 69

Accepted Solution

by:
Qlemo earned 500 total points
ID: 40470566
Often it is the same - with PPP one site is the client (initiator), and the other the server (responder). For authentication there is a user as is with your example.
0
 

Author Closing Comment

by:jskfan
ID: 40497827
Thank you
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Port Forwarding 4 51
Can we see Configuration labeled by "commit label xxx" in ASR9K? 2 40
NAT/PAT unable to config correctly 7 41
VTP Setup 4 21
I have seen some questions on problems with SSH/telnet access to Cisco routers that may occur despite the fact that from a PC connected to your LAN, Internet connectivity is in place and users can access Internet sites without any issues.  There are…
In the hope of saving someone else's sanity... About a year ago we bought a Cisco 1921 router with two ADSL/VDSL EHWIC cards to load balance local network traffic over the two broadband lines we have, but we couldn't get the routing to work consi…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

740 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question