Cisco Small Business Pro series

Configuring VPN
VPN Passthrough
84 SRP 521 VoIP Gateway Administration Guide
6
PPTP Passthrough Point-to-Point Tunneling Protocol (PPTP) allows the
Point-to-Point Protocol (PPP) to be tunneled through an
IP network. PPTP Pass-Through 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 Pass-Through is enabled by default. To
disable L2TP Passthrough, select Disabled.
Field Description