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Chapter 10 Network Address Translation (NAT)
VMG1312-T10C User’s Guide
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The following table describes the fields in this screen.
10.5 The ALG Screen
Click
Network Setting > NAT > ALG
to open the
ALG
screen. Use this screen to enable and
disable the NAT Application Layer Gateway (ALG) in the Device.
The SIP ALG allows SIP calls to pass through NAT by examining and translating IP addresses
embedded in the data stream. When the Device registers with the SIP register server, the SIP ALG
translates the 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 you enable the SIP ALG.
Figure 92
Network Setting > NAT > ALG
The following table describes the fields in this screen.
10.6 Technical Reference
This section provides some technical background information about the topics covered in this
chapter.
Table 50
Network Setting > NAT > DMZ
LABEL
DESCRIPTION
WAN Interface
Select the WAN interface for which to configure a default server.
Default Server
Address
Enter the IP address of the default server which receives packets from ports that are not
specified in the
Port Forwarding
screen.
Note: If you do not assign a default server, the Device discards all packets received for ports
not specified in the virtual server configuration.
Apply
Click this to save your changes back to the Device.
Cancel
Click
Cancel
to restore your previously saved settings.
Table 51
Network Setting > NAT > ALG
LABEL
DESCRIPTION
SIP ALG
Enable this to make sure SIP (VoIP) works correctly with port-forwarding.
Apply
Click this to save your changes back to the Device.
Cancel
Click
Cancel
to restore your previously saved settings.
Summary of Contents for VMG1312-T10C
Page 4: ...Contents Overview VMG1312 T10C User s Guide 4 ...
Page 12: ...Table of Contents VMG1312 T10C User s Guide 12 ...
Page 13: ...13 PART I User s Guide ...
Page 14: ...14 ...
Page 20: ...Chapter 1 Introduction VMG1312 T10C User s Guide 20 ...
Page 28: ...28 ...
Page 34: ...Chapter 4 Connection Status and System Info VMG1312 T10C User s Guide 34 ...
Page 106: ...Chapter 7 Home Networking VMG1312 T10C User s Guide 112 ...
Page 144: ...Chapter 13 Filter VMG1312 T10C User s Guide 152 ...
Page 164: ...Chapter 15 Parental Control VMG1312 T10C User s Guide 172 ...
Page 172: ...Chapter 16 Certificates VMG1312 T10C User s Guide 180 ...
Page 178: ...Chapter 17 System Monitor VMG1312 T10C User s Guide 186 ...
Page 180: ...Chapter 18 User Account VMG1312 T10C User s Guide 188 ...
Page 184: ...Chapter 20 System VMG1312 T10C User s Guide 192 ...
Page 190: ...Chapter 22 Log Setting VMG1312 T10C User s Guide 198 ...
Page 196: ...Chapter 24 Backup Restore VMG1312 T10C User s Guide 204 ...
Page 214: ...Chapter 26 Diagnostic VMG1312 T10C User s Guide 222 ...
Page 232: ...Appendix B Legal Information VMG1312 T10C User s Guide 240 ...