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VPN 65
connection between two devices, make sure that they support the
same encryption method.
Enabling IPSec VPN disables pass-through to IPSec and L2TP over IPSec
Virtual Servers on the LAN. Pass-through outbound from clients on the
LAN to servers on the Internet is unaffected.
■ PPTP (Point-to-Point Tunneling Protocol) — provides a secure tunnel
for remote client access to a PPTP security gateway. It is not as secure
as IPSec but is easy to administer. PPTP does not support gateway to
gateway connections and is only suitable for connecting remote users.
Check that your ISP’s routers support this protocol before you use it.
Enabling the PPTP Server disables PPTP pass-through to a Virtual Server
on the LAN. Pass-through outbound from clients on the LAN to servers
on the Internet is unaffected.
■ L2TP over IPSec — this is a combination of two protocols. L2TP is used
to authenticate a user, and IPSec is used to encrypt data. L2TP over
IPSec does not support gateway to gateway connections and is only
suitable for connecting remote users. Check that your ISP’s routers
support this protocol before you use it.
Enabling L2TP over IPSec disables pass-through to IPSec and L2TP over
IPSec Virtual Servers on the LAN. Pass-through outbound from clients on
the LAN to servers on the Internet is unaffected.
Using the VPN Tunnel Configuration screen, you can add new IPSec, L2TP
over IPSec and PPTP connections, and to edit existing connections. When
adding or editing values on this screen remember that both ends of the
connection must contain the same information.