R4#sh run
Building configuration...

Current configuration : 2694 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
no ip icmp rate-limit unreachable
ip cef
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no ip domain lookup
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multilink bundle-name authenticated
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archive
 log config
  hidekeys
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crypto isakmp policy 1
 encr 3des
 hash md5
 authentication pre-share
 group 2
crypto isakmp key cisco123! address 192.168.4.2
crypto isakmp key cisco123! address 192.168.6.2
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crypto ipsec transform-set TS esp-3des esp-md5-hmac
 mode transport
crypto ipsec transform-set TS1 esp-3des esp-md5-hmac
 mode transport
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crypto ipsec profile protect-gre
 set security-association lifetime seconds 86400
 set transform-set TS
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crypto ipsec profile protect-gre1
 set security-association lifetime seconds 86400
 set transform-set TS1
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ip tcp synwait-time 5
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interface Loopback1
 ip address 2.2.2.2 255.255.255.255
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interface Tunnel0
 ip address 172.16.1.2 255.255.255.0
 tunnel source 192.168.5.2
 tunnel destination 192.168.4.2
 tunnel protection ipsec profile protect-gre
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interface Tunnel1
 ip address 172.16.0.2 255.255.255.0
 tunnel source 2.2.2.2
 tunnel destination 192.168.4.2
 tunnel protection ipsec profile protect-gre1
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interface FastEthernet0/0
 description *** Connection to R1 ***
 ip address 192.168.5.2 255.255.255.0
 duplex auto
 speed auto
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interface Serial0/0
 no ip address
 shutdown
 clock rate 2000000
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interface FastEthernet0/1
 description *** Connection to PC1 ***
 ip address 192.168.2.1 255.255.255.0
 duplex auto
 speed auto
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interface Serial0/1
 no ip address
 shutdown
 clock rate 2000000
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interface Serial0/2
 no ip address
 shutdown
 clock rate 2000000
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interface FastEthernet1/0
 no ip address
 shutdown
 duplex auto
 speed auto
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interface Serial2/0
 no ip address
 shutdown
 serial restart-delay 0
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interface Serial2/1
 no ip address
 shutdown
 serial restart-delay 0
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interface Serial2/2
 no ip address
 shutdown
 serial restart-delay 0
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interface Serial2/3
 no ip address
 shutdown
 serial restart-delay 0
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ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 192.168.5.1
ip route 1.1.1.1 255.255.255.255 Tunnel0
ip route 1.1.1.1 255.255.255.255 Tunnel1
ip route 192.168.1.0 255.255.255.0 172.16.0.1
ip route 192.168.3.0 255.255.255.0 172.16.1.1
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no ip http server
no ip http secure-server
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no cdp log mismatch duplex
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control-plane
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line con 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
line aux 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
line vty 0 4
 login
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!
end

R4#