Cisco Ata 191 And Ata 192 Analog Telephone Adapter Administration Guide For Multiplatform Firmware - Cisco ATA 191 Administration Manual

Manually Add Port Forwarding (ATA 192 Only)
Enter the settings as described. After making changes, click Submit to save your settings, or click Cancel to
redisplay the page with the saved settings.
Table 19: Port Forwarding Settings
Field
Port Forwarding Type
Application Name
Enter a Name
External Port, Internal Port
Start - End Port

Cisco ATA 191 and ATA 192 Analog Telephone Adapter Administration Guide for Multiplatform Firmware

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Description
Choose the type of port forwarding:
• Single Port Forwarding: Forwards traffic for
a specified port to the same or an alternate port
on the target server in the LAN.
• Port Range Forwarding: Forwards traffic to
a range of ports to the same ports on the target
server in the LAN. See the Internet application's
documentation for the required ports or ranges.
For single port forwarding, choose a common
application from the drop-down list (such as Telnet,
or DNS).
To add an application that is not on the list, choose
Add a new name, and then enter the name in the
Enter a Name field.
If you chose Port Range Forwarding, or if you chose
Add a new name in the Application Name list for
Single Port Forwarding, enter a name to identify the
application.
For Single Port Forwarding, specify the ports to use.
For simplicity, the internal and external port numbers
are often the same. Different external port numbers
could be used to differentiate traffic of the same
application type intended for different servers, or for
privacy by using non-standard ports.
• External port: For single port forwarding, enter
the port number that external clients use to set
up a connection with the internal server.
• Internal port: For single port forwarding, enter
the port number that the ATA uses when
forwarding traffic to the internal server.
The correct entries appear automatically if you choose
a standard application from the Application Name
list for Single Port Forwarding.
For Port Range Forwarding, specify the range of ports
to use. Valid values are from 1 to 65535.
Network Configuration