Localtunnel

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source ~/.nvm/nvm.sh && nvm use node
npm install -g localtunnel

Linux Service

cat << EOF | sudo tee /etc/systemd/system/chorke-academia-lt.service >/dev/null
[Unit]
Description=Chorke Academia Localtunnel Daemon
After=syslog.target network.target

[Service]
User=${USER}
Type=simple
Restart=on-failure
ExecStart=lt -p 80 -s chorke-academia
TimeoutStopSec=20
KillMode=process

[Install]
WantedBy=multi-user.target

EOF
sudo systemctl daemon-reload


sudo systemctl enable  --now chorke-academia-lt
     systemctl status  chorke-academia-lt


sudo systemctl disable --now chorke-academia-lt
     systemctl status  chorke-academia-lt


sudo systemctl restart chorke-academia-lt
     systemctl status  chorke-academia-lt


sudo systemctl stop    chorke-academia-lt
     systemctl status  chorke-academia-lt

# nginx virtual host & reverse proxy config
cat << EOF | sudo tee /etc/nginx/sites-enabled/chorke-academia.loca.lt >/dev/null
server {
  listen 2015;
  listen [::]:2015;

  index index.html;
  server_name chorke-academia.loca.lt;
  root /var/www/chorke-academia.loca.lt;

  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  proxy_set_header X-Forwarded-Proto $scheme;
  proxy_set_header Host $http_host;
  proxy_redirect off;

  location / {
    proxy_pass http://127.0.0.1:3002;
    try_files $uri $uri/ =404;
  }
  
  location /api {
    proxy_pass http://127.0.0.1:3001;
  }

  access_log /var/log/nginx/chorke-academia.loca.lt/access.log;
  error_log  /var/log/nginx/chorke-academia.loca.lt/error.log info;

  error_page 500 502 503 504 /500.html;
  client_max_body_size 25M;
  keepalive_timeout 10;
}

EOF

# haproxy frontend and backend config
: <<'EOC'
frontend chorke
   bind *:80
   mode http
   acl host-is-chorke-academia    hdr(host) -i chorke-academia.loca.lt
   use_backend chorke-academia    if host-is-chorke-academia

backend chorke-academia
   server nginx 127.0.0.1:2015
   mode http

EOC

Note:
No need to update any /etc/hosts entries 
open https://chorke-academia.loca.lt  &>/dev/null &
open https://loca.lt/mytunnelpassword &>/dev/null &
open https://ipv4.icanhazip.com       &>/dev/null &

Playground

lt --host 127.0.0.1 --port 80 --subdomain academia-chorke
lt --port 80 --subdomain academia-chorke
lt -h 127.0.0.1 -p 80 -s academia-chorke
lt -p 80 -s academia-chorke

curl -k https://loca.lt/mytunnelpassword
curl -k https://ipv4.icanhazip.com
sudo nginx -t
sudo rm /etc/systemd/system/academia-lt.service
systemctl daemon-reload
systemctl reset-failed

sudo ufw allow 9000:9010/tcp
sudo systemctl status ufw
sudo ufw status numbered
sudo ufw status verbose
sudo ufw enable
sudo ufw status

curl -k host.docker.internal:9000
curl -k host.docker.internal:9001
curl -k host.docker.internal:9002
curl -k host.docker.internal:9008
curl -k host.docker.internal:9009
curl -k host.docker.internal:9010

systemctl list-units --type=service --state=running
systemctl list-units --type=service --state=active
systemctl list-units --type=service
systemctl --type=service --state=running
systemctl --type=service --state=active
systemctl --type=service

firewall-cmd --list-services
netstat -ltup
firewall-cmd --list-ports
ss -ltup

References