jimbopalmer
Tsar of all the Rushers
join:2008-06-02
Greenwood, MS
 ·Windjammer Cable
1 edit | reply to jmpage2
Re: Trouble getting Greenbow VPN Client working with RV042
I am going to talk about how router to router IPSEC VPNs work as they are what I know best, and touch on Router to client PPTP as I see the router side of that. Neither are exactly what you want to do.
In a router to router VPN, the goal is to make no changes on the computers, either the servers or clients.
The computer has a subnet mask and an IP Address, often 255.255.255.0 and 192.168.X.Y X is different at the other end of the VPN. For other addresses in the same X, the router is not involved. If the destination is outside the subnet, the router gets involved.
A VPN adds a second chance to be local, so the destination is compared to the VPN's subnet first, before going to the 'real' routing table. I set my subnet mask there to be 255.255.0.0 and the subnet to be 192.168.0.0, so all 192.168.Z.Z addresses are VPNed, not routed. (this does not effect the local traffic as they never went to the router in the first place)
Finally if the address is outside my VPN range it is routed to the internet at large. (I print screened this in the next message)
With PPTP clients, it is handled differently, they are assigned 4 addresses inside my Subnet. (I print screened this as well, 2 messages down)
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I tried to remain child-like, all I achieved was childish. |
