Parameter

Select or enter . . .

Enable Web

Select this check box to allow someone to

Server Access on

remotely access the AP+4’s built-in HTTP

WAN

server. Web server access is useful for

 

troubleshooting – it can allow a technician to

 

remotely check the AP+4 configuration

 

settings.

 

In normal use, this option should be disabled

 

for security reasons.

Enable IPsec

(PPTP/VPN only) Select this check box to let

passthrough on

network devices communicate via a Virtual

VPN connection

Private Network (VPN) using Internet Protocol

 

security (IPsec), in which sending and

 

receiving devices share a public key for

 

encryption and decryption. The AP+4 simply

 

passes the encrypted packets back and forth

 

between the VPN clients and the ISP’s VPN

 

server.

Enable PPTP

(PPTP/VPN only) Select this check box to

passthrough on

protect VPN communication via Point-to-Point

VPN connection

Tunneling Protocol. The AP+4 passes the

 

encrypted packets back and forth between the

 

VPN clients and the ISP’s VPN server.

Enable L2TP

(PPTP/VPN only) Select this check box to

passthrough on

protect VPN communication via Layer Two (2)

VPN connection

Tunneling Protocol, an enhancement of PPTP

 

and L2F protocols. The AP+4 passes the

 

encrypted packets back and forth between the

 

VPN clients and the ISP’s VPN server.

Set TTL (Time to

Enter the number of hops a packet can make

Live timer) Value

before it is discarded.

Chapter 5. TCP/IP Settings

49