Configuring the Network
Advanced Settings
Cisco SPA100Series Administration Guide 36
3
VPN Passthrough (SPA122 Only)
Use the Network Setup > Advanced Settings > VPN Passthrough page to
configure VPN passthrough for IPsec, PPTP, and L2TP protocols. Use this feature if
there are devices behind the ATA that need to set up IPsec tunnels independently.
For example, a device may need to use a VPN tunnel to connect to another router
on the WAN.
By default, VPN Passthrough is enabled for IPsec, PPTP, and L2TP.
After making changes, click Submit to save your settings, or click Cancel to
redisplay the page with the saved settings.
MAC Address Enter the MAC address that you want to assign to your
ATA. If your computer’s MAC address is the address that
you previously registered for your ISP account, click
Clone Your PC’s MAC. Your computer’s MAC address
appears in the MAC Address field.
Default setting: the current MAC address of your ATA
Field Description
Field Description
IPsec Passthrough Internet Protocol Security (IPsec) is a suite of protocols
used to implement secure exchange of packets at the IP
layer. Click Enabled to enable this feature, or click
Disabled to disable it. Default setting: Enabled
PPTP Passthrough Point-to-Point Tunneling Protocol (PPTP) allows the
Point-to-Point Protocol (PPP) to be tunneled through an
IP network. To disable PPTP Passthrough, select
Disabled. Default setting: Enabled
L2TP Passthrough Layer 2 Tunneling Protocol is the method used to enable
Point-to-Point sessions via the Internet on the Layer 2
level. Click Enabled to enable this feature, or click
Disabled to disable it. Default setting: Enabled
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