I wasn't able to give you much information because I couldn't understand your OP. Let me give it another try.
You have a couple of ellipsis 7 tablets (Mid-Range Verizon 4G tablets). You want to mine using Udoo Quads (Raspberry Pi style ARM PC). You want to login to [the Quads] using SSH with full security? Maybe over Verizon 4G (LTE)?
What is running Android? The Ellipsis 7 or the Quads?
Thanks for the response,This post is a good candidate for RTFM comments. Identification the FM to read would be appreciated 
On another post, I've asked about building a bitcoin miner using Udoo Quads. I'm sure that (eventually) that project can be setup to accept ssh logins in a secure manner. My provider is Verizon and I have a couple of ellipsis 7 tablets to use as remote clients. Having secured the server end, the problem is to secure the remote client. I can write Android apps and root the tablet if necessary. I do not trust the tablet or network to be secure.
Any help for the truly paranoid?
On another post, I've asked about building a bitcoin miner using Udoo Quads. I'm sure that (eventually) that project can be setup to accept ssh logins in a secure manner. My provider is Verizon and I have a couple of ellipsis 7 tablets to use as remote clients. Having secured the server end, the problem is to secure the remote client. I can write Android apps and root the tablet if necessary. I do not trust the tablet or network to be secure.
Any help for the truly paranoid?
You have a couple of ellipsis 7 tablets (Mid-Range Verizon 4G tablets). You want to mine using Udoo Quads (Raspberry Pi style ARM PC). You want to login to [the Quads] using SSH with full security? Maybe over Verizon 4G (LTE)?
What is running Android? The Ellipsis 7 or the Quads?
Basically correct.
The Quads are running Udoobuntu, a Ubuntu for ARM processors. The Ellipsis' run Android (as does a NOOK I have available). The Ellipsis will be used only as a client (i.e. to make or receive payments). The Udoo will be doing mining and serve the wallets. SSH between the Ellipsis and the Udoo will be over either the 4g or a local hotspot.
The Udoo has 4 cores for the ARM and the equivalent of an Arduino UNO on board. I also have available several Raspberry Pi's and other computers to play with.
I would like to build the Android bitcoin wallet and ssh apps from scratch.