Do I need two network cards for VPN server behind firewall

[David Gillett]

  Both the subject (seen above) and the text (quoted below) specify the
location of the VPN server to be "behind the firewall".  Why do I keep
seeing answers which tell the Bing how many NICs he will need IF HE PUTS THE
VPN SERVER IN SOME OTHER RELATION TO THE FIREWALL?
  It can be useful and interesting to debate where the server should be, but
(as I read it) this post doesn't invite such debate, nor have the "answers"
offered any.

David Gillett
Enterprise Networking Services Manager, Niku Corp.
(650) 701-2702
"Transforming the Service Economy"


-----Original Message-----

Bing Zhang wrote:
>
>  We currently use our dsl router as firewall. Now we want to put a VPN
> server behind the firewall to enable employee work at home to dial up
their
> ISP and connect to all the machines on our company LAN via VPN. But I am
not
> sure the connection topology: will this VPN server be another router? i.e.
> it has to have two network cards, one connect directly to dsl, the other
one
> connect to the hub which connects to rest of the machines? Or does this
VPN
> server only need one network card as a normal machine, the VPN software
will
> take care of the IP packets routing between the machines on our LAN and
> machines at employee's home?
>
> The VPN server I plan to use Linux S/WAN running on Red Hat 6.2.
>
> Thanks
>
> Bing

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