VPN between two LANs

[uncle_tantouly]

HI everyone..
it's my first time posting in this forum. what i want to do is very simple, i just want to connect two LANs that both of them are connected to the internet through routers.

well.. the question is, what's the best way to deploy this kind of VPN so they both can share resours between each other or even remoutly access a certain pcs?

any reply will be appreciated.

[YeOldeStonecat]

I prefer using the hardware method...get a router at each end which supports router to router VPN tunnels.

Routers such as Linksys/Cisco RV0 series
Sonicwalls
Cisco PIX
Watchguard, etc...lots of them on the market.

[uncle_tantouly]

ok... how to connect the VPN routers to the currently installed routers?

[YeOldeStonecat]

ok... how to connect the VPN routers to the currently installed routers?

You don't want to do that (at least I wouldn't). I'd replace existing routers. You don't want double NAT.

What you do is design each network on a different IP range.
Say central office...have it on a 192.168.10.xxx network
Second location...192.168.11.xxx
Third location...192.168.12.xxx

I try to avoid using 192.168.0.xxx and 192.168.1.xxx...because many people will want to VPN in from home....and home routers are usually in those IP ranges. You can't VPN into a network if your own network is in the same IP range.