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?
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?