SSH

1. your router: assign a static server ip
2. server: install openssh
   • Ubuntu: sudo apt install openssh
   • Termux: pkg install openssh
3. server: start ssh daemon
   • Ubuntu: sudo systemctl restart ssh
   • Termux: sshd
4. server: verify password auth is on
   • Ubuntu: /etc/ssh/sshd_config
   • Termux: $PREFIX/etc/ssh/sshd_config
   •   PasswordAuthentication yes
5. server: Termux only: create an ssh password with passwd if needed
6. client: create an ssh key pair
   • ssh-keygen -C "your.email@example.com"
7. client: add server to config
   • ~/.ssh/config
   •   host enterprise user picard hostname 192.168.1.1701 port 22
   • termux uses port 8022 by default
8. client: copy public key to server
   • ssh-copy-id enterprise
   • enter your password when prompted
9. client: test success
   • ssh enterprise
10. server: disable password auth
    • Ubuntu: /etc/ssh/sshd_config
    • Termux: $PREFIX/etc/ssh/sshd_config
    •   PasswordAuthentication no
11. server: restart ssh daemon
    • Ubuntu: sudo systemctl restart ssh
    • Termux: pkill sshd && sshd
12. profit

references: Linuxize and Termux Wiki

Last update: February 21, 2026