R4#sh run
Building configuration...

Current configuration : 1362 bytes
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version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
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hostname R4
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boot-start-marker
boot-end-marker
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no aaa new-model
memory-size iomem 5
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ip cef
no ip domain lookup
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crypto isakmp policy 100
 hash md5
 authentication pre-share
 group 2
 lifetime 80
crypto isakmp key cisco address 202.106.0.2
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crypto ipsec transform-set VPN-R4 esp-des esp-md5-hmac 
!
crypto map VPN-MAP 100 ipsec-isakmp 
 set peer 202.106.0.2
 set transform-set VPN-R4 
 match address 151
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interface Loopback0
 ip address 192.168.200.1 255.255.255.0
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interface FastEthernet0/0
 no ip address
 duplex auto
 speed auto
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interface FastEthernet0/1
 no ip address
 shutdown
 duplex auto
 speed auto
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interface Serial1/0
 ip address 201.106.0.2 255.255.255.0
 crypto map VPN-MAP
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interface Serial1/1
 no ip address
 shutdown
 serial restart-delay 0
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interface Serial1/2
 no ip address
 shutdown
 serial restart-delay 0
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interface Serial1/3
 no ip address
 shutdown
 serial restart-delay 0
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ip http server
no ip http secure-server
ip route 202.106.0.0 255.255.255.0 201.106.0.1
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access-list 151 permit ip 192.168.200.0 0.0.0.255 192.168.100.0 0.0.0.255
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control-plane
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line con 0
line aux 0
line vty 0 4
 password cisco
 login
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end

R4#