Manual Cisco Cisco SPA112 VoIP (page 33 of 136) (English)

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Configuring the Network

Application (SPA122 Only)

Cisco SPA100Series Administration Guide 39

Enter a Name 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.

External Port, Internal

Port

For Single Port Forwarding, specify the ports to use. For

simplicity, the internal and external port numbers will often be

the same. However, different external port numbers could be

used to differentiate traffic of the same application type intended

for different internal servers, or to promote privacy through the

use of non-standard ports.

• External port: For single port forwarding, enter the port

number that external clients will 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.

Start - End Port For Port Range Forwarding, specify the range of ports to use.

Valid values are from 1 to 65535.

Protocol Select the protocol(s) that can be forwarded: TCP, UDP, or TCP

and UDP.

IP Address Enter the IP address of the local server that will receive

forwarded traffic.

To ensure correct forwarding of traffic, local servers must either

be configured with a static IP address, or be assigned a reserved

IP address through DHCP. Use the Interface Setup > LAN

> DHCP Server page to reserve IP addresses. See Network

Settings for the LAN and DHCP Server (SPA122 Only),

page 29.

Enabled Check the box to enable this port forwarding rule, or uncheck

the box to disable it. Default setting: Disabled

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Cisco Cisco SPA112 VoIP Manual

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