Dear Viewer,

In this tutorial we will  learn that How to Configure IPSEC LAN- To - LAN  VPN on Cisco Routers. We will Configure IPSEC VPN using Command Line on Cisco Routers.


LAB - 1 






CLI COMMANDS :


R1


! 1. Phase I - ISAKMP Parameters

crypto isakmp policy 5
 authentication pre-share
 encryption 3des
 hash md5
 group 2
!
crypto isakmp key cisco123 address 200.1.1.1

! 2. Phase II - ESP Parameters

crypto ipsec transform-set TSET esp-3des esp-sha-hmac

! 3. Interesting Traffic - Crypto ACL

access-list 101 permit ip 10.1.1.0 0.0.0.255 10.2.2.0 0.0.0.255

! 4. Link the above parameters to each other.

crypto map CMAP 10 ipsec-isakmp
 match address 101
 set peer 200.1.1.1
 set transform-set TSET

! 5. Apply the Crypto Map on the outgoing Interface

Interface Fa 0/0
 crypto map CMAP

R2


! 1. Phase I - ISAKMP Parameters

crypto isakmp policy 15
 authentication pre-share
 encryption 3des
 hash md5
 group 2
!
crypto isakmp key cisco123 address 190.1.1.1

! 2. Phase II - ESP Parameters

crypto ipsec transform-set TSET esp-3des esp-sha-hmac

! 3. Interesting Traffic - Crypto ACL

access-list 101 permit ip  10.2.2.0 0.0.0.255 10.1.1.0 0.0.0.255

! 4. Link the above parameters to each other.

crypto map CMAP 10 ipsec-isakmp
 match address 101
 set peer 190.1.1.1
 set transform-set TSET

! 5. Apply the Crypto Map on the outgoing Interface

Interface Fa 0/0
 crypto map CMAP

Verification Commands:

Phase I - Show crypto isakmp sa
Phase II - Show crypto ipsec sa



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