SSH into Termux.md

After setting up Cloudflared on Termux, we can now SSH into the phone that has Termux installed.

Cloudflare setup

1. Create a Public Hostname, ssh.example.com, with the following properties:

   a. Service type: SSH

   b. URL: 127.0.0.1:8022

2. In Cloudflared Access, go to Applications and create a new one, with the following properties:

   a. Application name (can be anything): ssh

   b. Public host name: ssh.example.com

   c. Add access policy allow your own email.

   d. Browser rendering settings: SSH

Termux Setup

1. Install openssh:

pkg upgrade
pkg install openssh

2. Start server by issuing:

sshd

3. Use the service via:

sv up sshd
sv-enable sshd

4. If you need to stop sshd, just kill it's process:

pkill sshd

5. Know your username via:

whoami

Password access

Create a new password with passwd

$ passwd
New password:
Retype new password:
New password was successfully set.

Pubkey authentication

From your PC, copy the public key, if already generated, else see Generating a new SSH key

For e.g.

cat .ssh/id_ed25519.pub

and paste it in Termux:

nano .ssh/authorized_keys

Browser

1. Visit ssh.example.com

2. Access application via your email

3. Enter your username, of the type: u0_a264

4. Either type in your password or paste your private key

5. Profit!

References

https://wiki.termux.com/wiki/Remote_Access

https://developers.cloudflare.com/cloudflare-one/connections/connect-networks/use-cases/ssh/ssh-browser-rendering/