TP-Link TL-ER604W manual  IPsec Policy, Policy Name, Local Subnet

Figure 3-64 IPsec Policy

The following items are displayed on this screen:

General

You can enable/disable IPsec function for the Router here.

IPsec Policy

Policy Name:	Specify a unique name to the IPsec policy. Up to 28 characters
	can be entered.
Mode:	Select the network mode for IPsec policy. Options include:
	 LAN-to-LAN: Select this option when the client is a
	network.
	 Client-to-LAN: Select this option when the client is a host.
Local Subnet:	Specify IP address range on your local LAN to identify which
	PCs on your LAN are covered by this policy. It's formed by IP
	address and subnet mask.
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