Address Mapping; Address Mapping Screen - ZyXEL Communications AX Series User Manual

Figure 163 Network Setting > NAT > ALG
The following table describes the fields in this screen.
Table 87 Network Setting > NAT > ALG
LABEL
NAT ALG
SIP ALG
RTSP ALG
PPTP ALG
IPSEC ALG
Apply
Cancel

13.6 Address Mapping

Address mapping can map local IP Addresses to global IP addresses. Ordering your rules is important
because the Zyxel Device applies the rules in the order that you specify. When a rule matches the
current packet, the Zyxel Device takes the corresponding action and the remaining rules are ignored.
Use this screen to enable or disable the NAT Address Mapping in the Zyxel Device.

13.6.1 Address Mapping Screen

Click Network Setting > NAT > Address Mapping to open the Address Mapping screen.
Chapter 13 Network Address Translation (NAT)
DESCRIPTION
Enable this to make sure applications such as FTP and file transfer in IM applications work
correctly with port-forwarding and address-mapping rules.
Click this (switch turns blue) to make sure SIP (VoIP) works correctly with port-forwarding and
address-mapping rules. Otherwise, click this to turn off (switch turns gray) the SIP ALG.
Enable this to have the Zyxel Device detect RTSP traffic and help build RTSP sessions through its
NAT. The Real Time Streaming (media control) Protocol (RTSP) is a remote control for
multimedia on the Internet.
Click this to turn on (switch turns blue) the PPTP ALG on the Zyxel Device to detect PPTP traffic
and help build PPTP sessions through the Zyxel Device's NAT.
Enable this to turn on the IPsec ALG on the Zyxel Device to detect IPsec traffic and help build
IPsec sessions through the Zyxel Device's NAT.
Click Apply to save your changes back to the Zyxel Device.
Click Cancel to restore your previously saved settings.
AX/DX/EX/PX Series User's Guide
275