How to Expose Intranet Web Services with Custom Domains Using frp

Overview

What is frp?

frp is a high‑performance reverse‑proxy for intranet penetration. It supports TCP, UDP, HTTP, HTTPS and provides P2P communication, allowing internal services to be exposed through a node with a public IP.

Architecture

GitHub repository: https://github.com/fatedier/frp

Key Features

Multiple protocol support: TCP, QUIC, KCP, Websocket, etc.

TCP connection multiplexing to reduce latency.

Load balancing across proxy groups.

Port reuse for exposing many services via one server port.

P2P communication to bypass the server when possible.

Client plugins such as static file viewer, HTTP/HTTPS conversion, SOCKS5.

Extensible server plugin system.

User‑friendly UI for configuration and monitoring.

Installation

App Store (optional)

Version: v0.54.0

Configure HTTP proxy with a custom domain

Use an HTTP‑type proxy to expose an internal web service via a custom domain. The HTTP proxy reuses a port and provides HTTP‑specific features. HTTPS works similarly but requires the backend service to be HTTPS or the use of the https2http plugin.

Steps

1. Configure frps.toml

Add the following to frps.toml to set the HTTP request listening port to 8484.

File:

/opt/1panel/apps/frps/frps/data/frps.toml

bindPort = 7000
vhostHTTPPort = 8484
# To enable HTTPS proxy also set vhostHTTPSPort

2. Open required ports

On the server (e.g., Alibaba Cloud) open the following ports in the security group: 7000 – client‑server communication 8484 – HTTP proxy listening port 7500 – frp dashboard

3. Configure frpc.toml

The client version must match the server version. Example uses frp_0.54.0_windows_amd64 .

File:

frpc.toml

serverAddr = "x.x.x.x"
serverPort = 7000

[[proxies]]
name = "web"
type = "http"
localPort = 8782
customDomains = ["webman2024.tinywan.com"]

serverAddr

is the public IP of the frps server.

4. Start the local web service

php start.php start
# Workerman output shows the service listening on http://0.0.0.0:8782

Ensure the service is reachable at http://127.0.0.1:8782 .

5. Start frps and frpc

Server (frps)

Client (frpc)

cd /d/frp_0.54.0_windows_amd64
./frpc.exe -c frpc.toml
# Expected log:
# [I] start frpc service for config file [frpc.toml]
# [I] try to connect to server...
# [I] login to server success, get run id [...]
# [I] proxy added: [web]
# [I] start proxy success

6. Domain resolution

Create an A record for webman2024.tinywan.com pointing to the server’s public IP (x.x.x.x). If the server already has a domain, a CNAME record or Host header modification can be used.

7. Access the service

Open http://webman2024.tinywan.com:8484 in a browser. The request is forwarded to the internal service listening on port 8782.