ZyXEL ZyWALL USG 20 User Guide - Page 402
Create Object, Source, Cancel
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Chapter 23 IPSec VPN Table 115 Configuration > VPN > IPSec VPN > VPN Connection > Edit (continued) LABEL DESCRIPTION Inbound Traffic Source NAT This translation hides the source address of computers in the remote network. Source Select the address object that represents the original source address (or select Create Object to configure a new one). This is the address object for the remote network. The size of the original source address range (Source) must be equal to the size of the translated source address range (SNAT). Destination Select the address object that represents the original destination address (or select Create Object to configure a new one). This is the address object for the local network. SNAT Select the address object that represents the translated source address (or select Create Object to configure a new one). This is the address that hides the original source address. The size of the original source address range (Source) must be equal to the size of the translated source address range (SNAT). Destination NAT Add This translation forwards packets (for example, mail) from the remote network to a specific computer (for example, the mail server) in the local network. Click this to create a new entry. Select an entry and click Add to create a new entry after the selected entry. Edit Select an entry and click this to be able to modify it. Remove Select an entry and click this to delete it. Move To change an entry's position in the numbered list, select it and click Move to display a field to type a number for where you want to put that entry and press [ENTER] to move the entry to the number that you typed. # This field is a sequential value, and it is not associated with a specific NAT record. However, the order of records is the sequence in which conditions are checked and executed. Original IP Select the address object that represents the original destination address. This is the address object for the remote network. Mapped IP Protocol Original Port Start / Original Port End Mapped Port Start / Mapped Port End OK Cancel Select the address object that represents the desired destination address. For example, this is the address object for the mail server. Select the protocol required to use this translation. Choices are: TCP, UDP, or All. These fields are available if the protocol is TCP or UDP. Enter the original destination port or range of original destination ports. The size of the original port range must be the same size as the size of the mapped port range. These fields are available if the protocol is TCP or UDP. Enter the translated destination port or range of translated destination ports. The size of the original port range must be the same size as the size of the mapped port range. Click OK to save the changes. Click Cancel to discard all changes and return to the main VPN screen. 402 ZyWALL USG 20/20W User's Guide