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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 NATRouter
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boot-start-marker
boot-end-marker
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enable secret 5 $1$.JKD$k4f5w1P/x5.Q5tGbXhMjt.
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no aaa new-model
memory-size iomem 5
ip cef
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no ip domain lookup
ip auth-proxy max-nodata-conns 3
ip admission max-nodata-conns 3
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multilink bundle-name authenticated
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archive
 log config
  hidekeys
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interface FastEthernet0/0
 description IC to ICRouter f0/1
 ip address 172.16.20.2 255.255.255.248
 ip nat outside
 ip virtual-reassembly
 speed 100
 full-duplex
!
interface FastEthernet0/1
 description IC to RRight f0/0
 ip address 192.168.4.1 255.255.255.252
 ip nat inside
 ip virtual-reassembly
 speed 100
 full-duplex
!
ip forward-protocol nd
ip route 172.16.10.1 255.255.255.255 172.16.20.1
ip route 192.168.2.0 255.255.255.0 192.168.4.2
!
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ip http server
no ip http secure-server
ip nat pool NAT_POOL 172.16.20.3 172.16.20.3 prefix-length 29
ip nat inside source list NAT_ACL pool NAT_POOL overload
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ip access-list standard NAT_ACL
 permit 192.168.4.0 0.0.0.3
 permit 192.168.2.0 0.0.0.255
 deny   any
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control-plane
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line con 0
line aux 0
line vty 0 4
 password cisco
 login
line vty 5 15
 password cisco
 login
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!
end