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Section
13. Use Private IP (Behind NAT)
Using a Private IP in a NAT Environment
The gateway is able to communicate with other gateways under a NAT environment using Private
IP addresses on the LAN side of your IP Sharing device. However you must configure the IP
Sharing device to treat the gateway as a Virtual Server using UDP port 5060,2000.
You will have to ask MIS personnel to enable the ports listed in the following table.
Packet Modes
SIP Signal Packets
Gateway Signaling Port
Gateway RTP Base Port
FTP software upgrade
Web management
If you want to use private IP behind NAT and Proxy Server is in Internet, you must need to enable
STUN service. If the system is installed in VPN, it is not necessary to Enable Stun.
Item Field Description
Update
Enter entries
Entry
Index: Enter dialing number
Public Address: Enter SIP account.
Port: Enter port number
Via Proxy: Select via Proxy or not
Delete
Delete entries
Entry
Index: Enter the index for delete.
Using Ports
UDP 5060
UDP 2000
UDP 4000
TCP 21
TCP 80
70
Default
Empty
Empty
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