IP Address Assignment for VPN clients.
- From: "William Holmes" <wtholmes@xxxxxxxxxxxxxx>
- To: <isalist@xxxxxxxxxxxxx>
- Date: Wed, 1 Dec 2004 09:47:41 -0500
Hello,
When configuring a VPN server you are given two choices for address
assignment. The first is DHCP and the second is a static address pool. When
configured to use a static pool you can essentially assign any subnet to the
VPN network. However if you want to use DHCP you are required to choose a
network adapter from which to assign addresses.
If you choose to use the Internal Interface then your VPN clients will share
the address space of the internal network.
I would like to use DHCP for address assignement and still have the VPN
network setup in its own address space. However this does not seem to be
possible. If I enable the DHCP relay agent on the VPN server and point it at
my DHCP server there is no way to tell the VPN interface when you make your
request "use this subnet". Instead it will use the subnet associated with the
adapter chosen on the IP property page.
If I am reading this correctly: Choosing a specific adapter is the only way
to configure the TCP/IP paramters of the VPN pseudo interface. In otherwords
it is the only way to decide on which subnet VPN clients will use.
Is there another way? The only thing I can think to do is add another
network adapter to my server and use it as the configuration adapter. However
this complicates things quite a bit and will require changing my ISA server's
config quite a bit.
Is there a way to use DHCP and assing the IP subnet to a VPN interface
without using a "Real" Interface?
Thanks
Bill
William Holmes (MCP)
Department of Computer Science
310 Upson Hall
Cornell University
Ithaca, NY 14853
wtholmes@xxxxxxxxxxxxxx
607 255-1757 (o) 607 227-6049 (c)
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