NAT Alias Entry | Polycom 6000, 7000 guide

NAT Configuration

195

Configuring

the NAT Alias Entry

Each NAT alias entry allows a device on the LAN (inside of NAT) to be accessible from the Internet via a unique IP address. The IAD only translates IP addresses for alias entries—port numbers are not changed.

You can create up to 7 direct public-to-private IP address mappings via the NAT alias table.

First, assign each public IP address using option C—Configure Port IP Address on the Router Configuration menu (Setting the Ethernet Port IP Address on page 13)—to entries 1 through 7 on the PVC or DLCI with a 255.255.255.255 subnet mask. Next, make alias entries to map each local IP address to a corresponding public IP address.

These NAT alias entries allow IP traffic to the public IP address to pass directly through, port for port, to the corresponding private IP address.

To configure each NAT alias entry:

1.Type A on the NAT Configuration menu to select Configure NAT Alias Entry.

2.The IAD displays the following prompt (the IAD displays the next unassigned entry).

Enter NAT Alias Entry to Configure (1..7): (1)1

Type the number of the alias entry you’re configuring.

3.The IAD displays the current local IP address and prompt:

Current NAT Alias Local IP Address = 0.0.0.0 Enter new NAT Alias Local IP address:

Type the IP address of the device on the LAN (it must be a statically assigned IP address—do not use DHCP to assign this address).

4.The IAD displays the current Internet IP Address and prompt:

Current NAT Alias Internet IP Address = 0.0.0.0 Enter new NAT Alias Internet IP address:

Type the new NAT alias IP address and press Enter.

5.The IAD displays the information you’ve entered and updates the configuration.

Updating NAT Alias entry 2, Local IP address 91.1.1.223 Internet IP address 168.192.32.244

6.When the operation is complete, press any key to display the NAT Configuration menu.

7.Continue with other NAT configuration tasks, or press Escape to return to the Main menu.

8.Reset the IAD (page 15) when you finish configuring NAT.

NetEngine IAD User Guide

7000, 6000 specifications

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