Configuring Port Triggering - Cisco Small Business RV315W Administration Manual

Networking

Configuring Port Triggering

Configuring Port Triggering
STEP 1
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STEP 3
Cisco RV315W Broadband Wireless VPN Router Administration Guide
Port triggering allows devices on the LAN or DMZ to request one or more ports to
be forwarded to them. Port triggering waits for an outbound request from the LAN
or DMZ on one of the defined outgoing ports, and then opens an incoming port for
that specified type of traffic.
Port triggering is a form of dynamic port forwarding while an application is
transmitting data over the opened outgoing or incoming ports. Port triggering
opens an incoming port for a specific type of traffic on a defined outgoing port.
Port triggering is more flexible than static port forwarding (available when
configuring firewall rules) because a rule does not have to reference a specific
LAN IP or IP range. Ports are also not left open when not in use, which provides a
level of security that port forwarding does not offer.
To add a port triggering rule:
Click Networking > Port Triggering. The Port Triggering page opens.
Enter the following information:
• WAN Port: Choose the WAN interface for this port triggering rule.
• LAN Port: Choose the LAN port for this port triggering rule.
• Protocol: Choose either TCP or UDP protocol.
• Triggering Range: Enter the port number or a range of port numbers that will
trigger this rule when a connection request from outgoing traffic is made. If
the outgoing connection uses only one port, enter the same port number in
both fields.
• Forwarding Range: Enter the port number or a range of port numbers used
by the remote system to respond to the request that it receives. If the
incoming connection uses only one port, then specify the same port number
in both fields.
• Status: Click Enable to enable the port triggering rule, or click Disable to
disable this rule.
Click Add.
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