ZyXEL Communications P-312 manual Example 4 -NAT Unfriendly Application Programs, NAT Example

P312 Broadband Security Gateway

6.4.4 Example 4 –NAT Unfriendly Application Programs

Some applications do not support NAT Mapping using TCP or UDP port address translation. In this case it is better to use Many-to-Many No Overload mapping as port numbers do not change for Many-to-Many No Overload (and One-to-One) NAT mapping types. The following figure illustrates this.

Figure 6-21 NAT Example 4

Other applications, e.g., gaming addressing information in the through NAT even when using

programs are NAT unfriendly because they embed data stream. These applications still won’t work One-to-Oneand Many-to-Many No Overload mapping

types.

Follow the steps outlined in example 3 above to configure these two menus as follows.

NAT 6-19