TP-Link TL-ER604W manual 1.6 ALG, ALG Following items are displayed on this screen

Trigger Protocol: Select the protocol used for trigger port.

Incoming Port: Enter the incoming port number or range of port numbers. The incoming port will open for follow-up connection after the trigger port initiates connection.

Incoming Protocol: Select the protocol used for incoming port.

Status: Activate or inactivate the entry.

Note:

●The Trigger Port and Incoming Port should be set in the range of 1-65535. The Incoming Port can be set in a continuous range such as 8690-8696.

●The Router supports up to 16 Port Triggering entries. Each entry supports at most 5 groups of trigger ports and overlapping between the ports is not allowed.

●Each entry supports at most 5 groups of incoming ports and the sum of incoming ports you set for each entry should not be more than 100.

List of Rules

In this table, you can view the information of the entries and edit them by the Action buttons.

The first entry in Figure 3-37indicates that: This is a Port Triggering entry named host1, When the LAN host initiates a TCP request via port of 5354, the incoming port 5355 of WAN1 will open for TCP and UDP protocol. This entry is activated.

3.4.1.6ALG

Some special protocols such as FTP, H.323, SIP, IPsec and PPTP will work properly only when ALG (Application Layer Gateway) service is enabled.

Choose the menu Advanced→NAT→ALG to load the following page.

Figure 3-38 ALG

The following items are displayed on this screen:

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