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A----NAT1----NAT2----B
I want to connect to B from A, for example ssh to B
I can do nothing to routers
How to do that?
How to connect a computer in LAN?
Answers
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You can't. it's impossible (that's assuming that behind the NAT A and B are using private IP ranges (RFC1918)).
scherand
Posted 2013-03-05T03:46:14.913
Reputation: 259
You should be able to SSH from B to A, establishing an SSH tunnel, then SSH BACK to B from A. Only way I can think of without using port forwarding, but I'm not too tech savvy – cutrightjm – 2013-03-05T06:42:44.813
You need a server somewhere on the Internet that both A and B can setup SSH tunnels (or VPN connections) to. Amazon will give you a free EC2 micro instance if nothing else. Hurricane Electric will give you free IPv6 tunnels which you can use like a VPN. – David Schwartz – 2013-04-10T20:36:43.263