Preventing IP address translation ranges for outside interface traversal

Preventing IP address translation ranges for outside interface traversal is a Twice NAT configuration that

  • translates a pool of IP addresses to itself to preserve original addressing

  • ensures IP addresses arrive unchanged at their destination, and

  • enables site-to-site VPN connectivity by maintaining address integrity.

Use case information

This Twice NAT configuration enables site-to-site VPN by preventing address translation for specific IP ranges.

The translation strategy involves translating a pool of IP addresses to itself so that IP addresses in one network location arrive unchanged in another location.