Chapter 8 NAT

Each field is described in the following table.

Table 53 Network > NAT > Trigger Port

LABEL

DESCRIPTION

Name

Enter a name to identify this rule. You can use 1 - 15 printable ASCII characters,

 

or you can leave this field blank. It does not have to be a unique name.

 

 

Incoming

 

 

 

Start Port

Enter the incoming port number or range of port numbers you want to forward to

End Port

the IP address the ZyXEL Device records.

 

To forward one port number, enter the port number in the Start Port and End Port

 

fields.

 

To forward a range of ports,

 

• enter the port number at the beginning of the range in the Start Port field

 

• enter the port number at the end of the range in the End Port field.

 

If you want to delete this rule, enter zero in the Start Port and End Port fields.

 

 

Trigger

 

 

 

Start Port

Enter the outgoing port number or range of port numbers that makes the ZyXEL

End Port

Device record the source IP address and assign it to the selected incoming port

 

number(s).

 

To select one port number, enter the port number in the Start Port and End Port

 

fields.

 

To select a range of ports,

 

• enter the port number at the beginning of the range in the Start Port field

 

• enter the port number at the end of the range in the End Port field.

 

If you want to delete this rule, enter zero in the Start Port and End Port fields.

 

 

Apply

Click this to save your changes and to apply them to the ZyXEL Device.

 

 

Cancel

Click this to discard your changes.

 

 

8.2.5 NAT ALG Screen

Use this screen to enable and disable SIP (VoIP), FTP (file transfer), and H.323 (audio-visual) ALG in the ZyXEL Device. To access this screen, click Network > NAT > ALG.

Figure 67 Network > NAT > ALG

Each field is described in the following table.

Table 54 Network > NAT > ALG

LABEL

DESCRIPTION

Enable SIP ALG

Select this to make sure SIP (VoIP) works correctly with port-forwarding and port-

 

triggering rules.

 

 

Enable FTP ALG

Select this to make sure FTP (file transfer) works correctly with port-forwarding

 

and port-triggering rules.

 

 

 

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P-2302HWUDL-P1 Series User’s Guide