Fortinet v3.0 MR7 manual Configuring authentication of L2TP VPN users/user groups

Models: v3.0 MR7

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VPN authentication

Configuring authenticated access

4Enter Starting IP and Ending IP addresses. This defines the range of addresses assigned to VPN clients.

5Select the user group that is to have access to this VPN. The FortiGate unit authenticates members of this user group.

6Select Apply.

To configure authentication for a PPTP VPN - CLI

config vpn pptp

set eip <starting_ip> set sip <ending_ip> set status enable

set usrgrp <user_group_name> end

You also need to define a firewall policy that permits packets to pass from VPN clients with addresses in the specified range to IP addresses that the VPN clients need to access on the private network behind the FortiGate unit. The Action for this firewall policy is ACCEPT, not ENCRYPT, because the allowed user group is defined in the PPTP VPN configuration, not in the firewall policy.

For detailed information about configuring PPTP, see the FortiGate PPTP VPN User Guide.

Configuring authentication of L2TP VPN users/user groups

Authentication of a FortiGate L2TP configuration must be done using the config vpn l2tp CLI command.

To configure authentication for an L2TP VPN - CLI

config vpn l2tp

set eip <starting_ip> set sip <ending_ip> set status enable

set usrgrp <user_group_name> end

For more information, see the FortiGate CLI Reference.

Configuring authentication of remote IPSec VPN users

An IPSec VPN on a FortiGate unit can authenticate remote users through a dialup group. The user account name is the peer ID and the password is the pre-shared key. For information about authentication using peer IDs and peer groups, see the FortiGate IPSec VPN User Guide.

Authentication through user groups is supported for groups containing only local users. To authenticate users using a RADIUS or LDAP server, you must configure XAUTH settings. See “Configuring XAuth authentication” on page 58.

To configure user group authentication for dialup IPSec - web-based manager

1Configure the dialup users who are permitted to use this VPN. Create a user group with Type:Firewall and add them to it.

For more information, see “Users/peers and user groups” on page 33.

 

FortiOS v3.0 MR7 User Authentication User Guide

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01-30007-0347-20080828

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Fortinet v3.0 MR7 Configuring authentication of L2TP VPN users/user groups, To configure authentication for a Pptp VPN CLI