iskolbin/tmate_for_ssh.md

## tmate_for_ssh.md

      
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              tmate_for_ssh.md
            
          
    The motivation is: ssh to remote computer without port forwading, dynamic DNS and so on, the only thing needed is that the remote is connected to the Internet.

On remote get tmate, put it in /usr/local/bin (apt version as of 18.04LTS is too old):

curl -L https://github.com/tmate-io/tmate/releases/download/2.4.0/tmate-2.4.0-static-linux-amd64.tar.xz|tar xJv
sudo mv tmate-2.4.0-static-linux-amd/tmate /usr/local/bin


Put public keys in ~/.ssh/authorized_keys


Get API key from https://tmate.io/ (or host your own server)


Create ~/.tmate.conf


set tmate-api-key "<YOUR_API_KEY>"                                
set tmate-session-name "<SESSION_NAME>"                     
set tmate-authorized-keys "~/.ssh/authorized_keys"        

Session name is chosen by you

Create /etc/systemd/system/tmate.service

[Install]
WantedBy=multi-user.target

[Unit]
Description=Tmate-SSH
Wants=network-online.target
After=network-online.target

[Service]
Type=simple
Restart=always
User=root
ExecStart=/usr/local/bin/tmate -F

probably you want to change User

Install tmate as service

systemctl daemon-reload
systemctl start tmate
systemctl enable tmate


You can reboot and ssh from any computer with private key:

ssh <REGISTRED_USERNAME>/<SESSION_NAME>@lon1.tmate.io