We have a Sonicwall NSA220 firewall, and about 4 public IPs we can use.
I have just set up a Windows 2012 VPN server internally and will ask our DNS hosts to route VPN.domainname.com to one of the free IPs. Our firewall typically already has a public IP assigned to it, which is also the default WAN.
My question is, if I use one of the unallocated public IPs allocated to us for the VPN connection, will it have to have another interface allocated to it on the Sonicwall, or is there a way I can use the existing WAN connection?
The ISPs Cisco router should forward the traffic for all those IPs to our firewall anyway.
Thanks, Evren