TCP Middlewares Overview

TCP Middlewares in Traefik let you manage connections on the fly. You can configure them in multiple ways (Docker labels, TOML, YAML, etc.).

# As a Docker Label
whoami:
  # A container that exposes an API to show its IP address
  image: traefik/whoami
  labels:
    # Create a middleware named `foo-ip-allowlist`
    - "traefik.tcp.middlewares.foo-ip-allowlist.ipallowlist.sourcerange=127.0.0.1/32, 192.168.1.7"
    # Apply the middleware named `foo-ip-allowlist` to the router named `router1`
    - "traefik.tcp.routers.router1.middlewares=foo-ip-allowlist@docker"
  

tcp:
  routers:
    router1:
      service: myService
      middlewares:
        - "foo-ip-allowlist"
      rule: "Host(`example.com`)"

  middlewares:
    foo-ip-allowlist:
      ipAllowList:
        sourceRange:
          - "127.0.0.1/32"
          - "192.168.1.7"

  services:
    service1:
      loadBalancer:
        servers:
          - address: "10.0.0.10:4000"
          - address: "10.0.0.11:4000"
  

Available TCP Middlewares