===== Static NAT Configuration =====
Static NAT requires few configuration steps. Each static mapping between local and global addresses **must** be configured. Not unlike a static entry for every static IP address required. You must inform the router on which interfaces to use ''**NAT**''. Interface subcommands inform the router which interfaces are ''**inside**'' / ''**outside**''.
  - ''**ip nat inside**'' command on an interface to specify inside.
  - ''**ip nat outside**'' command on an interface to specify outside.
  - ''**ip nat inside source static inside-local inside-global**'' from global config to configure the static mappings.
  - inside local will be a LAN IP - inside global will be your public IP (an EXTRA public IP).
===== Port Address Translation =====
Create an access list to match a group of source addresses as needed -- why else would we overload?
<code>
R1(config-std-nacl)#permit 10.1.1.0 0.0.0.255

R1#sh access-lists 
Standard IP access list NAT
    10 permit 10.1.1.0, wildcard bits 0.0.0.255 (2 matches)
    20 deny   any
</code>
Then configure NAT to match against entries in the NAT list configured above. Specify ''**OVERLOAD**'' to enable PAT.
<code>
ip nat inside source list MY_LIST int fa0/0 OVERLOAD
</code>