ZyXEL Communications P-660HNU-T1 User Manual

Chapter 9 Network Address Translation (NAT)
ADSL Router Series User’s Guide
158
The following table describes the fields in this screen.
9.5 The ALG Screen
Some NAT routers may include a SIP Application Layer Gateway (ALG). A SIP ALG allows SIP calls
to pass through NAT by examining and translating IP addresses embedded in the data stream.
When the ZyXEL Device registers with the SIP register server, the SIP ALG translates the ZyXEL
Device’s private IP address inside the SIP data stream to a public IP address. You do not need to
use STUN or an outbound proxy if your ZyXEL Device is behind a SIP ALG.
Table 45 Network > NAT > Address Mapping: Edit
LABEL DESCRIPTION
Type Choose the port mapping type from one of the following.
One-to-One: One-to-One mode maps one local IP address to one global IP address. Note
that port numbers do not change for One-to-one NAT mapping type.
Many-to-One: Many-to-One mode maps multiple local IP addresses to one global IP
address. This is equivalent to SUA (i.e., PAT, port address translation), ZyXEL's Single User
Account feature that previous ZyXEL routers supported only.
Many-to-Many Overload: Many-to-Many Overload mode maps multiple local IP
addresses to shared global IP addresses.
Many-to-Many No Overload: Many-to-Many No Overload mode maps each local IP
address to unique global IP addresses.
Server: This type allows you to specify inside servers of different services behind the NAT
to be accessible to the outside world.
Local Start IP This is the starting local IP address (ILA). Local IP addresses are N/A for Server port
mapping.
Local End IP This is the end local IP address (ILA). If your rule is for all local IP addresses, then enter
0.0.0.0 as the Local Start IP address and 255.255.255.255 as the Local End IP
address.
This field is N/A for One-to-One and Server mapping types.
Global Start IP This is the starting global IP address (IGA). Enter 0.0.0.0 here if you have a dynamic IP
address from your ISP.
Global End IP This is the ending global IP address (IGA). This field is N/A for One-to-One, Many-to-
One and Server mapping types.
Server Mapping
Set
Edit Details
Click this link to go to the Port Forwarding screen to edit a port forwarding set that you
have selected in the Server Mapping Set field.
Back Click this to return to the previous screen without saving.
Apply Click this to save your changes.
Cancel Click this to restore your previously saved settings.

ZyXEL Communications P-660HNU-T1 Specifications

Operating Environment

operating temperature	0°C to 40°C
operating humidity	20% to 90% RH
storage temperature	-25°C to 65°C
storage humidity	20% to 90% RH

Power

power input	12 VDC 1A

Ports & Interfaces

DSL port	One RJ-11 port for ADSL 2+
Ethernet ports	Four 10/100M Auto MDI/MDIX RJ-45 interface
USB port	One USB type A, 2.0 host USB

Weight and Dimensions

item dimensions (WxDxH)	186 x 121 x 33 mm
item weight	245 g
packing dimensions (WxDxH)	291 x 162 x 51 mm
packing weight	540 g