ZyXEL Communications Prestige 794M - Manual (Page 87)

Prestige 794M User’s Guide
87 Chapter 7 VPN
7.4 L2TP
L2TP (Layer 2 Tunneling Protocol) is another tunneling protocol to support VPN. L2TP
allows a PPP session to travel through the Internet and a user to access a corporate network.
Click VPN and L2TP to display the summary screen.
Figure 60 VPN: L2TP
The following table describes the labels in this screen.
Pre-Shared Key Enter your pre-shared key in this field. A pre-shared key identifies a
communicating party during a phase 1 IKE negotiation. It is called "pre-shared"
because you have to share it with another party before you can communicate
with them over a secure connection.
Type from 8 to 31 case-sensitive ASCII characters or from 16 to 62 hexadecimal
("0-9", "A-F") characters. You must precede a hexadecimal key with a "0x (zero
x), which is not counted as part of the 16 to 62 character range for the key. For
example, in "0x0123456789ABCDEF", 0x denotes that the key is hexadecimal
and 0123456789ABCDEF is the key itself.
Note: Both ends of the VPN tunnel must use the same pre-
shared key.
You will receive a PYLD_MALFORMED (payload malformed) packet if the same
pre-shared key is not used on both ends.
Apply Click Apply to save the changes.
Cancel Click Cancel to discard all changes and return to the main VPN screen.
Table 44 VPN Rules (IKE): Add Policy (continued)
LABEL DESCRIPTION
Table 45 VPN: PPTP
LABEL DESCRIPTION
Enable Select this option to activate this VPN rule.
Disable Select this option to deactivate this VPN rule.
Name This field displays the descriptive name for the VPN rule.
Type This field displays whether the Prestige acts as a client (Dialout) or server (Dialin)
for the VPN rule.