使用Frp配置内网访问（穿透）

标签：frps default frp 穿透访问 Frp frpc type transport

一、Frp简介

frp 是一个专注于内网穿透的高性能的反向代理应用，支持 TCP、UDP、HTTP、HTTPS 等多种协议，且支持 P2P 通信。可以将内网服务以安全、便捷的方式通过具有公网 IP 节点的中转暴露到公网。

frp 项目地址： https://github.com/fatedier/frp

二、Frp特性

通过在具有公网 IP 的节点上部署 frp 服务端，可以轻松地将内网服务穿透到公网，同时提供诸多专业的功能特性，这包括：

客户端服务端通信支持 TCP、QUIC、KCP 以及 Websocket 等多种协议。
采用 TCP 连接流式复用，在单个连接间承载更多请求，节省连接建立时间，降低请求延迟。
代理组间的负载均衡。
端口复用，多个服务通过同一个服务端端口暴露。
支持 P2P 通信，流量不经过服务器中转，充分利用带宽资源。
多个原生支持的客户端插件（静态文件查看，HTTPS/HTTP 协议转换，HTTP、SOCK5 代理等），便于独立使用 frp 客户端完成某些工作。
高度扩展性的服务端插件系统，易于结合自身需求进行功能扩展。
服务端和客户端 UI 页面。

三、架构与工作原理

frp 主要由两个组件组成：客户端(frpc) 和服务端(frps)。通常情况下，服务端部署在具有公网 IP 地址的机器上，而客户端部署在需要穿透的内网服务所在的机器上。

由于内网服务缺乏公网 IP 地址，因此无法直接被非局域网内的用户访问。用户通过访问服务端的 frps，frp 负责根据请求的端口或其他信息将请求路由到相应的内网机器，从而实现通信。

四、相关概念

4.1、代理

在 frp 中，一个代理对应一个需要公开访问的内网服务。一个客户端可以同时配置多个代理，以满足不同的需求。

4.2、代理类型

frp 支持多种代理类型，以适应不同的使用场景。以下是一些常见的代理类型：

TCP：提供纯粹的 TCP 端口映射，使服务端能够根据不同的端口将请求路由到不同的内网服务。
UDP：提供纯粹的 UDP 端口映射，与 TCP 代理类似，但用于 UDP 流量。
HTTP：专为 HTTP 应用设计，支持修改 Host Header 和增加鉴权等额外功能。
HTTPS：类似于 HTTP 代理，但专门用于处理 HTTPS 流量。
STCP：提供安全的 TCP 内网代理，要求在被访问者和访问者的机器上都部署 frpc，不需要在服务端暴露端口。
SUDP：提供安全的 UDP 内网代理，与 STCP 类似，需要在被访问者和访问者的机器上都部署 frpc，不需要在服务端暴露端口。
XTCP：点对点内网穿透代理，与 STCP 类似，但流量不需要经过服务器中转。
TCPMUX：支持服务端 TCP 端口的多路复用，允许通过同一端口访问不同的内网服务。

每种代理类型适用于不同的使用情境，您可以根据需求选择合适的代理类型来配置 frp。

五、安装

5.1、需求描述

公司有一台内网服务器A和一台具有公网IP的云服务器B ，内网服务器上有一个服务，如jenkins服务，需要将内网jenkins服务发布到公网进行访问，即通过云服务器B的公网IP进行访问。

5.2、下载安装包

从官方GitHub的Release页面下载最新版的二进制文件：https://github.com/fatedier/frp/releases ，截至目前最新版为：v0.54.0，linux版下载地址：https://github.com/fatedier/frp/releases/download/v0.54.0/frp_0.54.0_linux_amd64.tar.gz

5.3、公网服务器部署frp

(1) 上传安装包并解压

tar -xf frp_0.54.0_linux_amd64.tar.gz
mv frp_0.54.0_linux_amd64 frp
cd frp

(2) 修改配置

vim frps.toml
#服务绑定的IP与端口
bindAddr = "0.0.0.0"
bindPort = 7000
#web dashboard配置
webServer.addr = "0.0.0.0"
webServer.port = 7500
webServer.user = "admin"
webServer.password = "admin"
#启用prometheus监控指标
enablePrometheus = true
#token权限验证，需与客户端配置一致
auth.method = "token"
auth.token = "hopecloud"
#日志配置
log.to = "/app/frp/logs/frps.log"
log.level = "info"
log.maxDays = 3

(3) 创建日志目录

mkdir /app/frp/logs

(4) 启动服务

#命令行方式启动
./frps -c ./frps.toml

#后台启动
nohup ./frps -c ./frps.toml &> /dev/null &

#使用systemd方式启动
##准备启动文件
vim /etc/systemd/system/frps.service
[Unit]
# 服务名称，可自定义
Description = frp server
After = network.target syslog.target
Wants = network.target

[Service]
Type = simple
# 启动frps的命令，需修改为您的frps的安装路径
ExecStart = /app/frp/frps -c /app/frp/frps.toml

[Install]
WantedBy = multi-user.target
##启动服务
systemctl daemon-reload
systemctl start frps

5.4、内网服务器部署frp

(1) 上传安装包并解压

tar -xf frp_0.54.0_linux_amd64.tar.gz
mv frp_0.54.0_linux_amd64 frp
cd frp

mkdir logs conf.d

(3) 修改配置

#注意是frpc.toml文件，服务器是frps.toml
vim frpc.toml
#配置公网服务器上frp服务的IP与端口
serverAddr = "x.x.x.x"
serverPort = 7000
#web dashboard配置
webServer.addr = "0.0.0.0"
webServer.port = 7400
webServer.user = "admin"
webServer.password = "admin"
#日志配置
log.to = "/app/frp/logs/frpc.log"
log.level = "info"
log.maxDays = 3
#token权限验证，需与服务端配置一致
auth.method = "token"
auth.token = "hopecloud"
#代理配置，这里使用引用文件的方式
includes = ["./conf.d/*.toml"]

#保存以上配置，然后添加代理配置
vim ./conf.d/jenkins.toml
[[proxies]]
name = "jenkins"			#名称
type = "tcp"				#代理类型
localIP = "127.0.0.1"		#本地IP
localPort = 8000			#内网服务监听的端口
remotePort = 8500			#需要在公网服务器上监听的端口

(4) 启动服务

#命令行方式启动
./frpc -c ./frpc.toml

#后台启动
nohup ./frpc -c ./frpc.toml &> /dev/null &

#使用systemd方式启动
##准备启动文件
vim /etc/systemd/system/frpc.service
[Unit]
# 服务名称，可自定义
Description = frp client
After = network.target syslog.target
Wants = network.target

[Service]
Type = simple
# 启动frpc的命令，需修改为您的frpc的安装路径
ExecStart = /app/frp/frpc -c /app/frp/frpc.toml

[Install]
WantedBy = multi-user.target
##启动服务
systemctl daemon-reload
systemctl start frpc

5.5、访问测试

在浏览器使用公网服务器端使用：http://<公网IP>:8500，即可访问到内网的jenkins服务，注意，如果公网服务器有安全组，记得放开相应的端口。

公网服务器web界面：http://<公网IP>:7500

公网服务器监控指标：http://<公网IP>:7500/metrics

六、附录：

从官网下载了服务端与客户端的全配置文件，仅供参考

6.1、服务端全配置文件 frps_full_example.toml

# This configuration file is for reference only. Please do not use this configuration directly to run the program as it may have various issues.

# A literal address or host name for IPv6 must be enclosed
# in square brackets, as in "[::1]:80", "[ipv6-host]:http" or "[ipv6-host%zone]:80"
# For single "bindAddr" field, no need square brackets, like `bindAddr = "::"`.
bindAddr = "0.0.0.0"
bindPort = 7000

# udp port used for kcp protocol, it can be same with 'bindPort'.
# if not set, kcp is disabled in frps.
kcpBindPort = 7000

# udp port used for quic protocol.
# if not set, quic is disabled in frps.
# quicBindPort = 7002

# Specify which address proxy will listen for, default value is same with bindAddr
# proxyBindAddr = "127.0.0.1"

# quic protocol options
# transport.quic.keepalivePeriod = 10
# transport.quic.maxIdleTimeout = 30
# transport.quic.maxIncomingStreams = 100000

# Heartbeat configure, it's not recommended to modify the default value
# The default value of heartbeatTimeout is 90. Set negative value to disable it.
# transport.heartbeatTimeout = 90

# Pool count in each proxy will keep no more than maxPoolCount.
transport.maxPoolCount = 5

# If tcp stream multiplexing is used, default is true
# transport.tcpMux = true

# Specify keep alive interval for tcp mux.
# only valid if tcpMux is true.
# transport.tcpMuxKeepaliveInterval = 60

# tcpKeepalive specifies the interval between keep-alive probes for an active network connection between frpc and frps.
# If negative, keep-alive probes are disabled.
# transport.tcpKeepalive = 7200

# transport.tls.force specifies whether to only accept TLS-encrypted connections. By default, the value is false.
transport.tls.force = false

# transport.tls.certFile = "server.crt"
# transport.tls.keyFile = "server.key"
# transport.tls.trustedCaFile = "ca.crt"

# If you want to support virtual host, you must set the http port for listening (optional)
# Note: http port and https port can be same with bindPort
vhostHTTPPort = 80
vhostHTTPSPort = 443

# Response header timeout(seconds) for vhost http server, default is 60s
# vhostHTTPTimeout = 60

# tcpmuxHTTPConnectPort specifies the port that the server listens for TCP
# HTTP CONNECT requests. If the value is 0, the server will not multiplex TCP
# requests on one single port. If it's not - it will listen on this value for
# HTTP CONNECT requests. By default, this value is 0.
# tcpmuxHTTPConnectPort = 1337

# If tcpmuxPassthrough is true, frps won't do any update on traffic.
# tcpmuxPassthrough = false

# Configure the web server to enable the dashboard for frps.
# dashboard is available only if webServer.port is set.
webServer.addr = "127.0.0.1"
webServer.port = 7500
webServer.user = "admin"
webServer.password = "admin"
# webServer.tls.certFile = "server.crt"
# webServer.tls.keyFile = "server.key"
# dashboard assets directory(only for debug mode)
# webServer.assetsDir = "./static"

# Enable golang pprof handlers in dashboard listener.
# Dashboard port must be set first
webServer.pprofEnable = false

# enablePrometheus will export prometheus metrics on webServer in /metrics api.
enablePrometheus = true

# console or real logFile path like ./frps.log
log.to = "./frps.log"
# trace, debug, info, warn, error
log.level = "info"
log.maxDays = 3
# disable log colors when log.to is console, default is false
log.disablePrintColor = false

# DetailedErrorsToClient defines whether to send the specific error (with debug info) to frpc. By default, this value is true.
detailedErrorsToClient = true

# auth.method specifies what authentication method to use authenticate frpc with frps.
# If "token" is specified - token will be read into login message.
# If "oidc" is specified - OIDC (Open ID Connect) token will be issued using OIDC settings. By default, this value is "token".
auth.method = "token"

# auth.additionalScopes specifies additional scopes to include authentication information.
# Optional values are HeartBeats, NewWorkConns.
# auth.additionalScopes = ["HeartBeats", "NewWorkConns"]

# auth token
auth.token = "12345678"

# oidc issuer specifies the issuer to verify OIDC tokens with.
auth.oidc.issuer = ""
# oidc audience specifies the audience OIDC tokens should contain when validated.
auth.oidc.audience = ""
# oidc skipExpiryCheck specifies whether to skip checking if the OIDC token is expired.
auth.oidc.skipExpiryCheck = false
# oidc skipIssuerCheck specifies whether to skip checking if the OIDC token's issuer claim matches the issuer specified in OidcIssuer.
auth.oidc.skipIssuerCheck = false

# userConnTimeout specifies the maximum time to wait for a work connection.
# userConnTimeout = 10

# Only allow frpc to bind ports you list. By default, there won't be any limit.
allowPorts = [
  { start = 2000, end = 3000 },
  { single = 3001 },
  { single = 3003 },
  { start = 4000, end = 50000 }
]

# Max ports can be used for each client, default value is 0 means no limit
maxPortsPerClient = 0

# If subDomainHost is not empty, you can set subdomain when type is http or https in frpc's configure file
# When subdomain is test, the host used by routing is test.frps.com
subDomainHost = "frps.com"

# custom 404 page for HTTP requests
# custom404Page = "/path/to/404.html"

# specify udp packet size, unit is byte. If not set, the default value is 1500.
# This parameter should be same between client and server.
# It affects the udp and sudp proxy.
udpPacketSize = 1500

# Retention time for NAT hole punching strategy data.
natholeAnalysisDataReserveHours = 168

# ssh tunnel gateway
# If you want to enable this feature, the bindPort parameter is required, while others are optional.
# By default, this feature is disabled. It will be enabled if bindPort is greater than 0.
# sshTunnelGateway.bindPort = 2200
# sshTunnelGateway.privateKeyFile = "/home/frp-user/.ssh/id_rsa"
# sshTunnelGateway.autoGenPrivateKeyPath = ""
# sshTunnelGateway.authorizedKeysFile = "/home/frp-user/.ssh/authorized_keys"

[[httpPlugins]]
name = "user-manager"
addr = "127.0.0.1:9000"
path = "/handler"
ops = ["Login"]

[[httpPlugins]]
name = "port-manager"
addr = "127.0.0.1:9001"
path = "/handler"
ops = ["NewProxy"]

6.2、客户端全配置文件 frpc_full_example.toml

# This configuration file is for reference only. Please do not use this configuration directly to run the program as it may have various issues.

# your proxy name will be changed to {user}.{proxy}
user = "your_name"

# A literal address or host name for IPv6 must be enclosed
# in square brackets, as in "[::1]:80", "[ipv6-host]:http" or "[ipv6-host%zone]:80"
# For single serverAddr field, no need square brackets, like serverAddr = "::".
serverAddr = "0.0.0.0"
serverPort = 7000

# STUN server to help penetrate NAT hole.
# natHoleStunServer = "stun.easyvoip.com:3478"

# Decide if exit program when first login failed, otherwise continuous relogin to frps
# default is true
loginFailExit = true

# console or real logFile path like ./frpc.log
log.to = "./frpc.log"
# trace, debug, info, warn, error
log.level = "info"
log.maxDays = 3
# disable log colors when log.to is console, default is false
log.disablePrintColor = false

auth.method = "token"
# auth.additionalScopes specifies additional scopes to include authentication information.
# Optional values are HeartBeats, NewWorkConns.
# auth.additionalScopes = ["HeartBeats", "NewWorkConns"]

# auth token
auth.token = "12345678"

# oidc.clientID specifies the client ID to use to get a token in OIDC authentication.
# auth.oidc.clientID = ""
# oidc.clientSecret specifies the client secret to use to get a token in OIDC authentication.
# auth.oidc.clientSecret = ""
# oidc.audience specifies the audience of the token in OIDC authentication.
# auth.oidc.audience = ""
# oidc.scope specifies the permissions of the token in OIDC authentication if AuthenticationMethod == "oidc". By default, this value is "".
# auth.oidc.scope = ""
# oidc.tokenEndpointURL specifies the URL which implements OIDC Token Endpoint.
# It will be used to get an OIDC token.
# auth.oidc.tokenEndpointURL = ""

# oidc.additionalEndpointParams specifies additional parameters to be sent to the OIDC Token Endpoint.
# For example, if you want to specify the "audience" parameter, you can set as follow.
# frp will add "audience=<value>" "var1=<value>" to the additional parameters.
# auth.oidc.additionalEndpointParams.audience = "https://dev.auth.com/api/v2/"
# auth.oidc.additionalEndpointParams.var1 = "foobar"

# Set admin address for control frpc's action by http api such as reload
webServer.addr = "127.0.0.1"
webServer.port = 7400
webServer.user = "admin"
webServer.password = "admin"
# Admin assets directory. By default, these assets are bundled with frpc.
# webServer.assetsDir = "./static"

# Enable golang pprof handlers in admin listener.
webServer.pprofEnable = false

# The maximum amount of time a dial to server will wait for a connect to complete. Default value is 10 seconds.
# transport.dialServerTimeout = 10

# dialServerKeepalive specifies the interval between keep-alive probes for an active network connection between frpc and frps.
# If negative, keep-alive probes are disabled.
# transport.dialServerKeepalive = 7200

# connections will be established in advance, default value is zero
transport.poolCount = 5

# If tcp stream multiplexing is used, default is true, it must be same with frps
# transport.tcpMux = true

# Specify keep alive interval for tcp mux.
# only valid if tcpMux is enabled.
# transport.tcpMuxKeepaliveInterval = 60

# Communication protocol used to connect to server
# supports tcp, kcp, quic, websocket and wss now, default is tcp
transport.protocol = "tcp"

# set client binding ip when connect server, default is empty.
# only when protocol = tcp or websocket, the value will be used.
transport.connectServerLocalIP = "0.0.0.0"

# if you want to connect frps by http proxy or socks5 proxy or ntlm proxy, you can set proxyURL here or in global environment variables
# it only works when protocol is tcp
# transport.proxyURL = "http://user:[email protected]:8080"
# transport.proxyURL = "socks5://user:[email protected]:1080"
# transport.proxyURL = "ntlm://user:[email protected]:2080"

# quic protocol options
# transport.quic.keepalivePeriod = 10
# transport.quic.maxIdleTimeout = 30
# transport.quic.maxIncomingStreams = 100000

# If tls.enable is true, frpc will connect frps by tls.
# Since v0.50.0, the default value has been changed to true, and tls is enabled by default.
transport.tls.enable = true

# transport.tls.certFile = "client.crt"
# transport.tls.keyFile = "client.key"
# transport.tls.trustedCaFile = "ca.crt"
# transport.tls.serverName = "example.com"

# If the disableCustomTLSFirstByte is set to false, frpc will establish a connection with frps using the
# first custom byte when tls is enabled.
# Since v0.50.0, the default value has been changed to true, and the first custom byte is disabled by default.
# transport.tls.disableCustomTLSFirstByte = true

# Heartbeat configure, it's not recommended to modify the default value.
# The default value of heartbeatInterval is 10 and heartbeatTimeout is 90. Set negative value
# to disable it.
# transport.heartbeatInterval = 30
# transport.heartbeatTimeout = 90

# Specify a dns server, so frpc will use this instead of default one
# dnsServer = "8.8.8.8"

# Proxy names you want to start.
# Default is empty, means all proxies.
# start = ["ssh", "dns"]

# Specify udp packet size, unit is byte. If not set, the default value is 1500.
# This parameter should be same between client and server.
# It affects the udp and sudp proxy.
udpPacketSize = 1500

# Additional metadatas for client.
metadatas.var1 = "abc"
metadatas.var2 = "123"

# Include other config files for proxies.
# includes = ["./confd/*.ini"]

[[proxies]]
# 'ssh' is the unique proxy name
# If global user is not empty, it will be changed to {user}.{proxy} such as 'your_name.ssh'
name = "ssh"
type = "tcp"
localIP = "127.0.0.1"
localPort = 22
# Limit bandwidth for this proxy, unit is KB and MB
transport.bandwidthLimit = "1MB"
# Where to limit bandwidth, can be 'client' or 'server', default is 'client'
transport.bandwidthLimitMode = "client"
# If true, traffic of this proxy will be encrypted, default is false
transport.useEncryption = false
# If true, traffic will be compressed
transport.useCompression = false
# Remote port listen by frps
remotePort = 6001
# frps will load balancing connections for proxies in same group
loadBalancer.group = "test_group"
# group should have same group key
loadBalancer.groupKey = "123456"
# Enable health check for the backend service, it supports 'tcp' and 'http' now.
# frpc will connect local service's port to detect it's healthy status
healthCheck.type = "tcp"
# Health check connection timeout
healthCheck.timeoutSeconds = 3
# If continuous failed in 3 times, the proxy will be removed from frps
healthCheck.maxFailed = 3
# Every 10 seconds will do a health check
healthCheck.intervalSeconds = 10
# Additional meta info for each proxy. It will be passed to the server-side plugin for use.
metadatas.var1 = "abc"
metadatas.var2 = "123"
# You can add some extra information to the proxy through annotations.
# These annotations will be displayed on the frps dashboard.
[proxies.annotations]
key1 = "value1"
"prefix/key2" = "value2"

[[proxies]]
name = "ssh_random"
type = "tcp"
localIP = "192.168.31.100"
localPort = 22
# If remotePort is 0, frps will assign a random port for you
remotePort = 0

[[proxies]]
name = "dns"
type = "udp"
localIP = "114.114.114.114"
localPort = 53
remotePort = 6002

# Resolve your domain names to [serverAddr] so you can use http://web01.yourdomain.com to browse web01 and http://web02.yourdomain.com to browse web02
[[proxies]]
name = "web01"
type = "http"
localIP = "127.0.0.1"
localPort = 80
# http username and password are safety certification for http protocol
# if not set, you can access this customDomains without certification
httpUser = "admin"
httpPassword = "admin"
# if domain for frps is frps.com, then you can access [web01] proxy by URL http://web01.frps.com
subdomain = "web01"
customDomains = ["web01.yourdomain.com"]
# locations is only available for http type
locations = ["/", "/pic"]
# route requests to this service if http basic auto user is abc
# routeByHTTPUser = abc
hostHeaderRewrite = "example.com"
requestHeaders.set.x-from-where = "frp"
healthCheck.type = "http"
# frpc will send a GET http request '/status' to local http service
# http service is alive when it return 2xx http response code
healthCheck.path = "/status"
healthCheck.intervalSeconds = 10
healthCheck.maxFailed = 3
healthCheck.timeoutSeconds = 3

[[proxies]]
name = "web02"
type = "https"
localIP = "127.0.0.1"
localPort = 8000
subdomain = "web02"
customDomains = ["web02.yourdomain.com"]
# if not empty, frpc will use proxy protocol to transfer connection info to your local service
# v1 or v2 or empty
transport.proxyProtocolVersion = "v2"

[[proxies]]
name = "tcpmuxhttpconnect"
type = "tcpmux"
multiplexer = "httpconnect"
localIP = "127.0.0.1"
localPort = 10701
customDomains = ["tunnel1"]
# routeByHTTPUser = "user1"

[[proxies]]
name = "plugin_unix_domain_socket"
type = "tcp"
remotePort = 6003
# if plugin is defined, localIP and localPort is useless
# plugin will handle connections got from frps
[proxies.plugin]
type = "unix_domain_socket"
unixPath = "/var/run/docker.sock"

[[proxies]]
name = "plugin_http_proxy"
type = "tcp"
remotePort = 6004
[proxies.plugin]
type = "http_proxy"
httpUser = "abc"
httpPassword = "abc"

[[proxies]]
name = "plugin_socks5"
type = "tcp"
remotePort = 6005
[proxies.plugin]
type = "socks5"
username = "abc"
password = "abc"

[[proxies]]
name = "plugin_static_file"
type = "tcp"
remotePort = 6006
[proxies.plugin]
type = "static_file"
localPath = "/var/www/blog"
stripPrefix = "static"
httpUser = "abc"
httpPassword = "abc"

[[proxies]]
name = "plugin_https2http"
type = "https"
customDomains = ["test.yourdomain.com"]
[proxies.plugin]
type = "https2http"
localAddr = "127.0.0.1:80"
crtPath = "./server.crt"
keyPath = "./server.key"
hostHeaderRewrite = "127.0.0.1"
requestHeaders.set.x-from-where = "frp"

[[proxies]]
name = "plugin_https2https"
type = "https"
customDomains = ["test.yourdomain.com"]
[proxies.plugin]
type = "https2https"
localAddr = "127.0.0.1:443"
crtPath = "./server.crt"
keyPath = "./server.key"
hostHeaderRewrite = "127.0.0.1"
requestHeaders.set.x-from-where = "frp"

[[proxies]]
name = "plugin_http2https"
type = "http"
customDomains = ["test.yourdomain.com"]
[proxies.plugin]
type = "http2https"
localAddr = "127.0.0.1:443"
hostHeaderRewrite = "127.0.0.1"
requestHeaders.set.x-from-where = "frp"

[[proxies]]
name = "secret_tcp"
# If the type is secret tcp, remotePort is useless
# Who want to connect local port should deploy another frpc with stcp proxy and role is visitor
type = "stcp"
# secretKey is used for authentication for visitors
secretKey = "abcdefg"
localIP = "127.0.0.1"
localPort = 22
# If not empty, only visitors from specified users can connect.
# Otherwise, visitors from same user can connect. '*' means allow all users.
allowUsers = ["*"]

[[proxies]]
name = "p2p_tcp"
type = "xtcp"
secretKey = "abcdefg"
localIP = "127.0.0.1"
localPort = 22
# If not empty, only visitors from specified users can connect.
# Otherwise, visitors from same user can connect. '*' means allow all users.
allowUsers = ["user1", "user2"]

# frpc role visitor -> frps -> frpc role server
[[visitors]]
name = "secret_tcp_visitor"
type = "stcp"
# the server name you want to visitor
serverName = "secret_tcp"
secretKey = "abcdefg"
# connect this address to visitor stcp server
bindAddr = "127.0.0.1"
# bindPort can be less than 0, it means don't bind to the port and only receive connections redirected from
# other visitors. (This is not supported for SUDP now)
bindPort = 9000

[[visitors]]
name = "p2p_tcp_visitor"
type = "xtcp"
# if the server user is not set, it defaults to the current user
serverUser = "user1"
serverName = "p2p_tcp"
secretKey = "abcdefg"
bindAddr = "127.0.0.1"
# bindPort can be less than 0, it means don't bind to the port and only receive connections redirected from
# other visitors. (This is not supported for SUDP now)
bindPort = 9001
# when automatic tunnel persistence is required, set it to true
keepTunnelOpen = false
# effective when keepTunnelOpen is set to true, the number of attempts to punch through per hour
maxRetriesAnHour = 8
minRetryInterval = 90
# fallbackTo = "stcp_visitor"
# fallbackTimeoutMs = 500

6.3、官网示例配置参考

英文：https://github.com/fatedier/frp?tab=readme-ov-file#example-usage

中文：https://gofrp.org/zh-cn/docs/examples/

标签：frps,default,frp,穿透,访问,Frp,frpc,type,transport
From： https://www.cnblogs.com/hovin/p/18023593