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Operation times out trying to SSH outside LAN i.e. from internet to LAN no connection is established

I run Ubuntu 12.04 and have no success connecting with SSH from "Internet". The router is a TL-MR3420 which is set up to forward requests to one of the NIC's on ubuntu machine (which has in total 3 ...
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1answer
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ssh fails because port 22 doesn't work with AT&T Uverse

I am attempting to ssh into my home laptop (lappy) from my work laptop (lappy2) so I can run things, transfer files, feel good about having the skillz necessary to set up a server, etc. I have told ...