Cisco SRP521W-K9-G1 Administration Guide - Page 190

Configuring VPN VPN Passthrough 7 VPN Passthrough Use the VPN Passthrough page to configure VPN passthrough for IPSec, PPTP, and L2TP protocols. Use this feature if there are devices behind the SRP that need IPSec tunnels to be set up independently, such as connecting to another router on the WAN. STEP 1 Click VPN > Site to Site IPSec VPN > VPN Passthrough. The VPN Passthrough window opens. STEP 2 IPSec, PPTP, and L2TP passthrough are enabled by default. Click Disabled to disable any of these passthrough options. STEP 3 Click Submit to save your settings. VPN Passthrough Settings Field Description IPSec Passthrough Internet Protocol Security (IPSec) is a suite of protocols used to implement secure exchange of packets at the IP layer. IPSec Passthrough is enabled by default. To disable IPSec Passthrough, select Disabled. PPTP Passthrough Point-to-Point Tunneling Protocol (PPTP) allows the Point-to-Point Protocol (PPP) to be tunneled through an IP network. PPTP Passthrough is enabled by default. To disable PPTP Passthrough, select Disabled. L2TP Passthrough Layer 2 Tunneling Protocol is the method used to enable Point-to-Point sessions via the Internet on the Layer 2 level. L2TP Passthrough is enabled by default. To disable L2TP Passthrough, select Disabled. Cisco SRP500 Series Services Ready Platforms Administration Guide (SRP520 Models) 190