TCP+IP





= = =NAT=



Static NAT: A inside local always maps to the same inside global, same with the outside addresses.

To configure, define the outside and inside interfaces under the interface with //**#ip nat inside**// and //**#ip nat outside**//. Then map the ips with

//**#ip nat inside source static 10.1.1.1 200.1.1.1**//

Dynamic NAT also does a 1:1 mapping but defines a pool of addresses instead of manually defining the associations. If you prefer to map multiple inside addresses to a single outside address, overloading (PAT) can be used. Configuration is similar to static NAT


 * Define inside and outside interfaces with //**#ip nat inside**// and //**#ip nat outside**//
 * Define an address pool: //**#ip nat pool netmask **//
 * Define an access list to match inside addresses
 * Apply list to specified pool: //**#ip nat inside source list 1 pool **//
 * //**>sh ip nat translations**//

=IPv6=

Global (Assigned by IANA) IPv6 address consist of 3 parts:



To enable IPv6:

//**#ipv6 unicast-routing**// //**#ipv6 cef**//