OpenPort is a free, high-performance reverse tunneling and port forwarding service. It allows you to expose local servers (web servers, game servers, SSH, webhooks) to the internet without a public IP, without router port forwarding, and behind CGNAT.

How is OpenPort different from portmap.io or ngrok?

Unlike portmap.io which requires OpenVPN configuration files, OpenPort works with a single terminal command. Unlike ngrok free tier which changes your domain and port on every restart, OpenPort assigns you a permanent dedicated port for both TCP and UDP simultaneously.

Does OpenPort support UDP?

Yes, every user receives a dedicated port that forwards both TCP and UDP traffic simultaneously.

⠀⠀⠀⠀⠀⠀⠀⠄⣀⠢⢀⣤⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⣄⠀⡔⢀⠂⡜⢭⢻⣍⢯⡻⣝⣿⣿⡿⣟⠂
⠀⠀⠀⠀⠀⠀⠀⠄⠀⣦⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⡔⡀⢂⠜⣪⢗⡾⣶⡽⣾⣟⣯⠛⠀⠀
⠀⠀⠀⠀⠀⠄⠀⠠⣶⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣔⠨⡸⡝⣯⣳⢏⣿⠳⠉⠀⢠⣬⡶
⠠⣓⢤⣂⣄⣀⢀⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡆⠁⣞⡱⣝⠎⠀⢀⠠⣥⠳⡞⡹
⠀⡄⢉⠲⢿⣼⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡔⣧⡽⠋⠀⣰⣶⣻⣶⣿⢾⣷
⢤⡈⠉⠲⢤⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠁⢀⡴⢏⡳⢮⡿⣽⣞⠻⡜
⠒⣭⠳⢶⣼⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⢿⡙⠮⣜⣯⡽⣳⢌⡓⠈
⡸⣰⢋⣷⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⣻⢿⣻⣿⡽⣗⠋⠄⠀
⠣⢇⢟⣸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣧⢟⡿⢣⣟⡻⠘⠀⠀⠀
⠱⡊⠤⣸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠨⠗⠋⣁⣤⠖⠊⢁⣀
⠀⠁⠂⢹⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡏⠀⠀⠀⠀⣿⡂⠹⣿⣿⣿⣿⣿⠙⣿⣿⣿⣿⣿⣿⣿⣿⡿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠄⠒⢋⣉⡤⣔⣮⣽⣾
⢢⠣⣌⢼⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠀⠀⠀⠀⢰⣿⡅⠀⣿⣿⣿⣿⣿⠀⠸⢿⣹⣿⣿⣿⣿⣿⡇⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣶⣻⣿⣿⣿⣿⣿⣿⣿
⡉⠠⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡟⣼⢹⠀⠀⠀⠀⣾⠿⡇⠀⣿⣿⣿⣿⡏⠀⠀⣞⣧⣻⠟⢿⣿⣿⢠⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⣧⠱⣌⣳⣽⣻⣿⣿⣻
⠀⢒⡕⣺⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠁⡇⠈⣇⠀⠀⠀⠈⡆⢳⠀⠇⡟⠋⠉⠀⠀⠀⠃⢙⣠⣤⣤⣼⣯⣚⣟⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠀⠌⠑⠌⢳⠛⡛⠏⠛⠉
⡘⢷⣌⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡟⠉⢻⣀⣧⣤⣽⣦⣤⣄⠀⠰⡀⠃⠀⠀⠀⠀⠀⠀⡴⠟⠛⣉⣉⡉⠉⠈⠉⠉⠉⠋⢻⣿⣿⣿⣿⣿⣿⣿⣿⣿⠀⢈⠈⠈⠁⠛⠀⠀⠀⣒
⠉⢣⡛⣿⣿⣿⣿⣿⣿⣿⣿⣿⡧⠖⠛⠉⠉⠉⠀⠀⠐⠒⢢⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡾⣠⣲⣾⣿⢿⣷⢶⡄⠀⠀⣽⣿⣿⣿⣿⡿⠟⣿⣿⣿⣿⣿⠛⢁⣤⡶⠿⠛⠋
⠀⠀⠌⢽⣿⣿⣿⣿⣿⣿⣿⣿⡷⠀⠀⠀⣠⣶⣶⣿⣟⣿⣶⡅⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠃⢿⣿⣿⣿⣿⠀⣿⡀⠀⢻⣬⣙⡻⡿⣡⣾⣿⣿⡍⠈⣀⣤⣬⣤⣶⣲⣶⣿
⠀⢈⠐⡀⢻⣫⢿⣿⣿⣿⣿⠘⢧⠁⠀⣻⡏⠸⣿⣿⣿⣿⠏⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠑⢄⣉⣛⣋⣡⡴⠃⠀⠀⣿⣿⣿⠟⣠⡛⢿⣿⣿⣷⣲⣽⣿⣿⣷⣾⣷⣿⣿
⠀⠀⢀⠐⡀⢃⡈⣿⢿⣿⣿⣟⡆⠀⠀⠉⠿⣦⣈⣉⣉⠤⠚⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣿⡟⣡⣶⣿⣿⣾⣿⣿⣿⢿⡿⣿⣿⡿⠿⠛⣋⣡
⠠⠐⡀⢢⣶⣿⢧⠻⣯⣿⣯⡛⢿⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣿⣿⣿⣿⣿⣿⣿⣿⣿⠘⠐⠂⡁⠤⠔⢂⣉⣤⡴
⣀⠥⠌⣳⢯⣟⣮⣗⣾⣟⣿⣿⣦⣭⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣿⣿⣿⣿⣿⣿⣿⣿⣿⠂⣈⠥⡔⡤⣍⠣⣝⢾⡹
⠀⠀⠀⠠⠈⠉⠈⠉⠉⠉⣨⣿⣿⣿⣯⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣿⣿⣿⣿⣿⣿⣿⣿⡟⠻⢞⣿⣝⣳⢎⢳⢻⡮⣕
⠀⠀⢀⠀⡀⠀⠀⣀⣴⣾⣿⣿⣿⣿⣿⣧⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣰⣿⣿⣿⣿⣿⣿⣿⣿⣿⡗⢠⠘⡼⣽⣛⡞⠦⣧⢻⣽
⠀⢈⠀⡀⡀⢤⠞⡉⢭⣹⣿⣿⣿⣿⣿⣿⣿⣄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠈⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣴⣿⣿⣿⣿⣿⣿⣿⣿⣟⣿⣍⣣⢾⣵⣯⣷⣽⣦⣑⣯⢿
⠀⠂⣴⣾⡟⣧⠊⡔⢢⠛⣿⣿⣿⣿⣿⣿⣿⣿⣷⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠐⠒⠂⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⣾⣿⣿⣿⣿⣿⣿⣿⣿⡟⠉⣯⢹⣽⢻⣿⣿⣿⣿⣿⣿⣿⣿
⣶⣟⠳⣏⡿⣎⠳⣈⡜⣺⣿⠿⢿⣝⡿⣫⢟⣽⣿⣿⠻⣦⣄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⠔⠛⣿⠿⣟⢩⢾⣿⣿⣿⣿⣇⠾⣜⡧⣯⣟⣿⣿⣿⣿⣿⣿⣿⣿
⠋⢀⢱⣫⣟⢾⡹⢴⡸⣵⡏⣂⢾⡿⣽⣹⣟⣾⣿⡟⢠⡇⠀⣹⠂⠄⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣷⣣⢟⡿⣾⣿⣿⣿⣿⢌⠫⢝⡻⣵⢻⡟⣿⢿⣿⢿⡿⣿⠿
⠀⢢⠞⣴⢯⢯⣝⣦⢳⡝⡶⣭⣿⣽⣳⣟⡾⣽⡟⢀⡟⠀⢀⡿⠀⠀⠀⠁⠠⠤⠀⠀⠀⠤⠐⠀⠀⠀⠀⠀⠀⠀⢸⡗⠈⠭⣿⣿⣿⣿⡿⢌⠣⡀⡐⢈⠃⠚⠦⣉⠂⠣⠜⡄⢋
⣜⣷⢻⡜⣯⣾⡞⣥⣓⢾⡽⢎⡷⢯⡷⣯⢟⣽⠃⣸⠁⠀⡼⠃⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢻⡄⢹⣿⣿⣿⣿⢃⡮⡑⢰⢠⣂⡜⣦⡴⣱⣎⣴⣩⡜⣦
⣿⣯⢷⡻⣏⣷⣟⠶⣙⠮⡙⢪⠜⣯⢽⣯⣿⠃⠄⢃⣠⠞⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠹⣾⣿⣿⣿⡇⠢⢡⡙⢦⡓⡼⣽⣾⣿⣿⣿⣿⣷⣿⣿
⣿⡹⢇⡳⡹⣞⠘⡈⢅⠢⢁⠂⡘⠤⣋⣶⣡⠴⠚⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣿⣿⣿⣿⠰⡁⢆⠘⣡⠻⣽⣳⣿⣿⣿⣿⢿⣿⣿⣿
⢣⠝⡢⢍⠱⢈⣂⣌⡤⠦⠶⠶⠞⠛⠋⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢰⣿⣿⣿⠛⠷⣭⣂⠌⢠⠓⡴⣻⣿⣿⣿⣿⣿⣿⣯⣿
⣇⢾⡱⠞⠈⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣸⣿⣿⡇⠀⠀⠀⠉⠛⠳⠿⣶⣽⣿⣿⣿⣿⣿⣿⣿⣿

openport.pw

free persistent tcp & udp port forwarding to localhost.

"Close the world, Open the nExt."

install

run in your terminal:

curl -sSL https://openport.pw/install.sh | bash

iwr -useb http://openport.pw/install.ps1 | iex

commands

openport <local_port>	forward local port to the internet (e.g. `openport 8080`). prints your public port.
openport info	show assigned permanent port and secret token.
openport link <id> <tok>	link your existing port to another computer.

features & use cases

zero signup no registration, no credit card, no email required. run the install script and you immediately get a port.
dual tcp & udp simultaneous TCP and UDP forwarding on the same port. ideal for game servers (Minecraft, Valheim), voice services, and raw sockets.
permanent port your assigned public port stays with you across restarts. no broken webhook URLs or reconfiguring configs every run.
cgnat bypass works behind carrier-grade NAT, hotel Wi-Fi, strict enterprise firewalls, and home routers without manual port forwarding.
native rust core powered by Rathole with TCP_NODELAY and BBR congestion control for minimal latency and line-rate throughput.

comparison

feature	openport.pw	portmap.io	ngrok (free)
setup	1 command	OpenVPN config	auth token + binary
protocols	tcp + udp simultaneously	tcp or udp (separate)	tcp or http
port permanence	permanent port	random / paid	changes on restart
price	free	1 rule free	bandwidth & session limits
engine	native rust (rathole)	openvpn client	go agent

faq

how is openport different from portmap.io?

portmap.io requires generating and running an OpenVPN client with configuration files. OpenPort needs no VPN or configuration: just run a single lightweight command to tunnel any local port.

how do i host game servers (Minecraft, etc.)?

run openport 25565. Friends can join using openport.pw:<your_assigned_port>. Both TCP and UDP are enabled by default.

does it work behind router / CGNAT?

yes. The client creates an outbound encrypted reverse tunnel to openport.pw, completely bypassing NAT, CGNAT, and firewall restrictions without touching your router.