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VPN Resources Access


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5 replies to this topic

#1 lspin

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Posted 11 July 2014 - 08:06 AM

I have 3 sites in which VPN connections have been setup. Site 1 is in Fla, Site 2 is in AL, and Site 3 is in VA. Site 1 is connected to both 2 & 3 via VPN, but 2 & 3 are not connected to each other. Is it possible to access the resources from Site 2 to Site 3 via remote desktop through Site 1 or will I need to establish the VPN between the unconnected sites?



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#2 sflatechguy

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Posted 11 July 2014 - 01:18 PM

That sounds like a pass-through VPN. Something like this? http://technet.microsoft.com/en-us/library/cc958035.aspx



#3 lspin

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Posted 11 July 2014 - 02:10 PM

All sites are connected to a domain.


Edited by lspin, 11 July 2014 - 03:19 PM.


#4 sflatechguy

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Posted 11 July 2014 - 02:18 PM

A domain-based VPN then, more like this: https://sc1.checkpoint.com/documents/R76/CP_R76_VPN_AdminGuide/13928.htm

#5 Sneakycyber

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Posted 12 July 2014 - 02:02 PM

This can all be done with routing. On cisco hardware it's called a hub and spoke ipsec VPN (or GRE for iOS harware). When programming the VPN you need to make sure your subnetting allows all networks to be included in the interesting traffic. Global IP scheme could be 192.168.0.0 255.255.0.0 with each site using a different subnet. Site 1.= 192.168.10.0 255.255.255.0 Site 2. 192.168.30.0 255.255.255.0 Site 3. 192.168.40.0 255.555.255.0. Site 4 192.168.50.0 255.255.255.0. If sites 2-4 all connect to site 1 add static routes in the site 1 router for the respecting subnets. This is how I setup 3 Cisco 2801 routers connecting to a cisco 2811 router.
Chad Mockensturm 
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#6 JohnnyJammer

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Posted 13 July 2014 - 09:23 PM

Just set up a PPTP or SPTP vpn server, allow access for 1723 and 43 for GRE on the firewall(Router) to point to the vpn.

Then just leave the defaulty gateway settings in the VPN Adaptor when you have created the connection on the home computer.

As long as all servers/subnets can ping one another then you are laughing or just make sure to create the routing table on the server using 'route add /p 192.1681.0 255.255.255.0 192.168.2.254' .254 is the gateway from site 1.






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