jump443.net

Sign up

  1. Generate a keypair (skip if you already have one) 
    ssh-keygen -t ed25519
  2. Request a signup token 
    ssh -p 443 jump443-signup@ssh.jump443.net signup your@email.com
Email sent to your@email.com.
Follow the instructions in the email to register your SSH key.
Token expires in 24 hours.
  3. Register your key with the token from the email 
    ssh -p 443 jump443-signup@ssh.jump443.net register TOKEN < ~/.ssh/id_ed25519.pub
Account created for your@email.com.
  Trial: 75 free connections
  4. Add your destination host 
    ssh -p 443 jump443@ssh.jump443.net add-host your-server.com
Host added: your-server.com
  5. Connect 
    ssh -J jump443@ssh.jump443.net:443 user@your-server.com
# silent — you land directly on your server

Lost your SSH key?

Request a reset token by email, then add a new key:

ssh -p 443 jump443-signup@ssh.jump443.net reset-request your@email.com
ssh -p 443 jump443-signup@ssh.jump443.net reset TOKEN < ~/.ssh/new_key.pub

SSH config (recommended)

Add this to ~/.ssh/config to avoid typing the full address every time, and to enable connection sharing so multiple operations reuse a single authentication:

Host jump443
    HostName ssh.jump443.net
    Port 443
    User jump443
    IdentityFile ~/.ssh/id_ed25519
    ControlMaster auto
    ControlPath ~/.ssh/cm-%r@%h:%p
    ControlPersist 60s
    ServerAliveInterval 30
    ServerAliveCountMax 3

Once that's in place, the commands shorten to:

ssh -J jump443 user@your-server.com

Or permanently in ~/.ssh/config:

Host myserver
    HostName your-server.com
    User kristian
    ProxyJump jump443
ssh myserver
# tunnels through jump443 automatically, no flags needed

ControlMaster matters. Without it, every SSH invocation opens a new TCP connection and burns a trial credit. With it, the first connection authenticates and subsequent connections reuse that session for 60 seconds — one credit, many operations.

Managing your account

There is no web dashboard. All account management happens through SSH commands:

ssh jump443 status
  Account:  user@example.com
  Plan:     Trial (71 connections remaining)
  Keys:     1
  Hosts:    1
            your-server.com

ssh jump443 add-host other-server.com
Host added: other-server.com

ssh jump443 list-hosts
  1. your-server.com   (added 2026-06-23)
  2. other-server.com  (added 2026-06-23)

ssh jump443 add-key < ~/.ssh/id_ed25519_work.pub
Key added: SHA256:xyz789...

See the full command reference for all available commands and options.