RATiO Posted September 28, 2013 Share Posted September 28, 2013 At work we have three sites on different internet connections and yet the three networks can all communicate with each other directly I.e I can ping devices from one site at another Link to comment Share on other sites More sharing options...
Brian M. Veteran Posted September 28, 2013 Veteran Share Posted September 28, 2013 You might not have NAT - you might have a range of public facing IP addresses which are given to machines. Link to comment Share on other sites More sharing options...
TheDisneyMagic Posted September 28, 2013 Share Posted September 28, 2013 The chances are they are on a VPN connection that basically makes one large network out of the three smaller networks. Link to comment Share on other sites More sharing options...
n_K Posted September 28, 2013 Share Posted September 28, 2013 VPN, static routes, could be anything without more details. remixedcat 1 Share Link to comment Share on other sites More sharing options...
+BudMan MVC Posted September 28, 2013 MVC Share Posted September 28, 2013 Not understanding what your question is? Why would you think you could not ping your other company devices? Question for you what is the first 2 octets of your IP your pinging ?.?.x.x do they start with 10.x.x.x or 192.168.x.x or 172.16-31.x.x You could have point to point connections, you could be connected via mpls cloud, as mentioned could be something as simple as site to site vpns, etc. etc. What is it your confused about? Link to comment Share on other sites More sharing options...
RATiO Posted September 28, 2013 Author Share Posted September 28, 2013 On the 10.x range. I'm just interested in how its done as by default two people on different Internet's can't talk to each other's entire network Link to comment Share on other sites More sharing options...
YouWhat Posted September 28, 2013 Share Posted September 28, 2013 Its done by magic.....Seriously though, probably the 3 connections routed to 1 central dhcp then given internal network IP addresses from there... Link to comment Share on other sites More sharing options...
+BudMan MVC Posted September 28, 2013 MVC Share Posted September 28, 2013 "two people on different Internet's can't talk to each other's entire network" There is no real "default" way to connect different locations together as already stated it yes there is some sort of connection between them - but it could be over the public internet via a vpn. Or it could be a specific point to point connection (not the internet) or could be over a mpls cloud, etc.. where the company routes their locations across this even if they are private address space - since its not the really the internet. Could be microwave connection between the locations, etc.. The different ways to connect connections is numerous -- there is not really a default way. Still not sure what your asking exactly.. Link to comment Share on other sites More sharing options...
Rohdekill Posted September 28, 2013 Share Posted September 28, 2013 I'm guessing your real question is that they are all on three different domains, yet can communicate. If this is what you meant, they are using trusted domains. Link to comment Share on other sites More sharing options...
+John Teacake MVC Posted September 29, 2013 MVC Share Posted September 29, 2013 My best guess is leased lines between them or VPN's. Give us more information. It could be anything really, Just simple routing would suffice. Link to comment Share on other sites More sharing options...
sc302 Veteran Posted September 30, 2013 Veteran Share Posted September 30, 2013 VPN. They probably have a good firewall at each location that does full site VPN. Otherwise they are purchasing a separate circuit for internal traffic from the ISP or phone company. Link to comment Share on other sites More sharing options...
Fred 69 Posted September 30, 2013 Share Posted September 30, 2013 We do this with 10 different sites. Our ISP routes the traffic over their networks - a reseller of a mish-mash of different ISPs' networks. To us it's all transparent with the ISP-provided routers configured on specific local subnets. We have DHCP and DNS servers at each location so they can all work on their own. Link to comment Share on other sites More sharing options...
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