Vigor2912 Series User’s Guide
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Enable the necessary VPN service as you need. If you intend to run a VPN server inside your
LAN, you should disable the VPN service of Vigor Router to allow VPN tunnel pass through,
as well as the appropriate NAT settings, such as DMZ or open port.
After finishing all the settings here, please click OK to save the configuration.
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This submenu only applies to PPP-related VPN connections, such as PPTP, L2TP, L2TP over
IPsec.
Available settings are explained as follows:
Item Description
Dial-In PPP
Authentication
PAP Only - elect this option to force the router to
authenticate dial-in users with the PAP protocol.
PAP or CHAP - Selecting this option means the router will
attempt to authenticate dial-in users with the CHAP
protocol first. If the dial-in user does not support this
protocol, it will fall back to use the PAP protocol for
authentication.
Dial-In PPP Encryption
(MPPE)
Optional MPPE - This option represents that the MPPE
encryption method will be optionally employed in the
router for the remote dial-in user. If the remote dial-in user
does not support the MPPE encryption algorithm, the router