ZyXEL Communications VMG5313-B10A/ VMG5313-B30A Benutzerhandbuch
Chapter 11 Network Address Translation (NAT)
VMG5313-B10A/-B30A Series User’s Guide
191
The following table describes the fields in this screen.
11.7 The Address Mapping Screen
Ordering your rules is important because the VMG applies the rules in the order that you specify.
When a rule matches the current packet, the VMG takes the corresponding action and the
remaining rules are ignored.
When a rule matches the current packet, the VMG takes the corresponding action and the
remaining rules are ignored.
Click Network Setting > NAT > Address Mapping to display the following screen.
Figure 83
Network Setting > NAT > Address Mapping
The following table describes the fields in this screen.
Table 61
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.
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.
mapping rules.
RTSP ALG
Enable this to have the VMG 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.
NAT. The Real Time Streaming (media control) Protocol (RTSP) is a remote control for
multimedia on the Internet.
Apply
Click Apply to save your changes.
Cancel
Click Cancel to restore your previously saved settings.
Table 62
Network Setting > NAT > Address Mapping
LABEL
DESCRIPTION
Add new rule
Click this to create a new rule.
Set
This is the index number of the address mapping set.
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.
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.
Global Start IP
This is the starting Inside Global IP Address (IGA). Enter 0.0.0.0 here if you have a dynamic
IP address from your ISP. You can only do this for the Many-to-One mapping type.
IP address from your ISP. You can only do this for the Many-to-One mapping type.
Global End IP
This is the ending Inside Global IP Address (IGA). This field is blank for One-to-One and
Many-to-One mapping types.
Many-to-One mapping types.