# .ssh/config
Host tunnel-notflip
    Hostname tunnel.notflip.be
    User root
    IdentityFile ~/.ssh/id_rsa
    RemoteForward 20000 localhost:8000
    ServerAliveInterval 30
    ServerAliveCountMax 3

# .zshrc (or .bashrc)
alias tunnel="AUTOSSH_DEBUG=1 autossh -M 0 -T -N tunnel-notflip"

# On Server /etc/nginx/sites-available/tunnel.notflip.be
server {
    server_name tunnel.notflip.be;

    listen 80;
    location / {
         proxy_pass http://127.0.0.1:20000;
    }
}