title: Cisco 1800 NAT configuration
body: <p>I have Cisco 1812 router which I would like to setup as our office internet gateway. Although I followed guides on Cisco web site, I cannot get NAT to work.</p>
  
  <p>My problem is that NAT is not happening, and I cannot get why. </p>
  
  <p>When I connect to router, I get IP address from DHCP, and I can ping both local interface IP (192.168.210.254) and public IP (212.94.196.71 slightly changed), but I cannot get pass to internet. I cannot ping default gateway from machine connected to local interface, but I can ping it from the router itself, as well as any site on the internet.</p>
  
  <p>Lastly, show ip nat translations is showing empty list.</p>
  
  <p>What am I doing wrong?</p>
  
  <p>Here is my configuration</p>
  
  <pre><code>Current configuration : 2022 bytes
  !
  version 12.4
  service timestamps debug datetime msec
  service timestamps log datetime msec
  no service password-encryption
  !
  hostname router
  !
  boot-start-marker
  boot-end-marker
  !
  enable secret 5 $1$FXW9$XXXXXXXXXXXXXXXXXXX.
  !
  no aaa new-model
  !
  resource policy
  !
  no ip routing
  !
  !
  no ip cef
  no ip dhcp use vrf connected
  ip dhcp excluded-address 192.168.210.240 192.168.210.254
  ip dhcp excluded-address 192.168.210.1 192.168.210.4
  !
  ip dhcp pool lan1
     network 192.168.210.0 255.255.255.0
     dns-server 192.168.210.100
     default-router 192.168.210.254
     domain-name mydomain.com
  !
  ip name-server 210.127.96.3
  ip name-server 210.127.96.4
  !
  interface FastEthernet0
   ip address 192.168.210.254 255.255.255.0
   ip nat inside
   ip virtual-reassembly
   no ip route-cache
   speed auto
   full-duplex
  !
  interface FastEthernet1
   ip address 212.94.196.71 255.255.255.240
   ip nat outside
   ip virtual-reassembly
   no ip route-cache
   duplex auto
   speed auto
  !
  interface BRI0
   no ip address
   encapsulation hdlc
   no ip route-cache
   shutdown
  !
  interface FastEthernet2
   shutdown
  !
  interface FastEthernet3
   shutdown
  !
  interface FastEthernet4
   shutdown
  !
  interface FastEthernet5
   shutdown
  !
  interface FastEthernet6
   shutdown
  !
  interface FastEthernet7
   shutdown
  !
  interface FastEthernet8
   shutdown
  !
  interface FastEthernet9
   shutdown
  !
  interface Vlan1
   ip address 192.168.1.254 255.255.255.0
   no ip route-cache
  !
  interface Vlan10
   ip address 10.28.10.254 255.255.255.0
   no ip route-cache
  !
  interface Vlan11
   ip address 10.1.11.254 255.255.255.0
   no ip route-cache
  !
  interface Vlan55
   ip address 10.28.55.254 255.255.255.0
   no ip route-cache
  !
  ip default-gateway 212.94.196.65
  !
  !
  no ip http server
  no ip http secure-server
  ip nat pool ovrld 212.94.196.71 212.94.196.71 prefix-length 28
  !
  access-list 7 permit 192.168.210.0 0.0.0.31
  snmp-server community public RO
  !
  control-plane
  !
  line con 0
  line aux 0
  line vty 0 4
   login
  !
  !
  webvpn context Default_context
   ssl authenticate verify all
   !
   no inservice
  !
  end
  </code></pre>