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74 Chapter 5 VPN Service
To enable L2TP:
1 In Server Admin, choose the VPN Service from the Computers & Services list.
2 Click Settings.
3 Select the General tab.
4 Select L2TP.
5 Enter the shared secret.
6 Set the beginning IP address of the allocation range.
7 Set the ending IP address of the allocation range.
8 Enter the group that has access to VPN login.
You can use the Users & Groups button to browse for a group.
If you leave this blank, all workgroups will have access to VPN login.
9 Click Save.
Enabling and Configuring PPTP Transport Protocol
Use Server Admin to designate PPTP as the transport protocol. By enabling this
protocol, you must also configure the connection settings. You should designate an
encryption key length (40-bit in addition to 128-bit), the IP address allocation range to
be given to your clients, and group to be allowed VPN priviledges (if desired). If both
L2TP and PPTP are used, each protocol should have a separate, non-overlapping
address range.
To enable PPTP:
1 In Server Admin, choose the VPN Service from the Computers & Services list.
2 Click Settings.
3 Select the General tab.
4 Select PPTP.
5 If desired, select “Allow 40-bit encryption keys” to allow such keys to be used in
addition to 128-bit keys.
6 Set the beginning and IP addresses of the allocation range.
7 Enter the group that has access to VPN login.
You can use the Users & Groups button to browse for a group.
If you leave this blank, all workgroups will have access to VPN login.
8 Click Save.
Warning: Allowing 40-bit encryption keys is less secure, but may be necessary for
some VPN client applications.
LL2351.Book Page 74 Monday, September 8, 2003 2:47 PM