ZyXEL Communications PMG5317-T20A - The Address Mapping Screen

Chapter 11 Network Address Translation (NAT)
PMG5317-T20A User’s Guide
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Figure 76 Network Setting > NAT > ALG
The following table describes the fields in this screen.
11.7 The Address Mapping Screen
Ordering your rules is important because the GPON Device applies the rules in the order that you
specify. When a rule matches the current packet, the GPON Device takes the corresponding action
and the remaining rules are ignored.
Click Network Setting > NAT > Address Mapping to display the following screen.
Figure 77 Network Setting > NAT > Address Mapping
The following table describes the fields in this screen.
Table 53 Network Setting > NAT > ALG
LABEL DESCRIPTION
NAT ALG Enable this to make sure applications such as FTP and file transfer in IM applications work
correctly with port-forwarding and address-mapping rules.
SIP ALG
Enable this to make sure SIP (VoIP) works correctly with port-forwarding and address-
mapping rules.
RTSP ALG
Enable this to have the GPON 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.
PPTP ALG
Enable this to turn on the PPTP ALG on the GPON Device to detect PPTP traffic and help build
PPTP sessions through the GPON Device’s NAT.
IPSEC ALG
Enable this to turn on the IPsec ALG on the GPON Device to detect IPsec traffic and help
build IPsec sessions through the GPON Device’s NAT.
Apply Click Apply to save your changes.
Cancel Click Cancel to restore your previously saved settings.
Table 54 Network Setting > NAT > Address Mapping
LABEL DESCRIPTION
Add new rule Click this to create a new rule.
Rule Name This show the name of the rule.
Local Start IP This is the starting Inside Local IP Address (ILA).
Local End IP This is the ending Inside Local IP Address (ILA). If the rule is for all local IP addresses, then
this field displays 0.0.0.0 as the Local Start IP address and 255.255.255.255 as the Local
End IP address. This field is blank for One-to-One mapping types.