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traefik/docs/configuration/entrypoints.md
SALLEYRON Julien 00728e711c IPStrategy for selecting IP in whitelist
2018-08-24 16:20:03 +02:00

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Entry Points Definition

Reference

TOML

defaultEntryPoints = ["http", "https"]

# ...
# ...

[entryPoints]
  [entryPoints.http]
    address = ":80"
    [entryPoints.http.compress]
    
    [entryPoints.http.clientIPStrategy]
      depth = 5
      excludedIPs = ["127.0.0.1/32", "192.168.1.7"]

    [entryPoints.http.whitelist]
      sourceRange = ["10.42.0.0/16", "152.89.1.33/32", "afed:be44::/16"]
      [entryPoints.http.whitelist.IPStrategy]
        depth = 5
        excludedIPs = ["127.0.0.1/32", "192.168.1.7"]
          
    [entryPoints.http.tls]
      minVersion = "VersionTLS12"
      cipherSuites = [
        "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
        "TLS_RSA_WITH_AES_256_GCM_SHA384"
       ]
      [[entryPoints.http.tls.certificates]]
        certFile = "path/to/my.cert"
        keyFile = "path/to/my.key"
      [[entryPoints.http.tls.certificates]]
        certFile = "path/to/other.cert"
        keyFile = "path/to/other.key"
      # ...
      [entryPoints.http.tls.clientCA]
        files = ["path/to/ca1.crt", "path/to/ca2.crt"]
        optional = false

    [entryPoints.http.redirect]
      entryPoint = "https"
      regex = "^http://localhost/(.*)"
      replacement = "http://mydomain/$1"
      permanent = true

    [entryPoints.http.auth]
      headerField = "X-WebAuth-User"
      [entryPoints.http.auth.basic]
        removeHeader = true
        users = [
          "test:$apr1$H6uskkkW$IgXLP6ewTrSuBkTrqE8wj/",
          "test2:$apr1$d9hr9HBB$4HxwgUir3HP4EsggP/QNo0",
        ]
        usersFile = "/path/to/.htpasswd"
      [entryPoints.http.auth.digest]
        removeHeader = true
        users = [
          "test:traefik:a2688e031edb4be6a3797f3882655c05",
          "test2:traefik:518845800f9e2bfb1f1f740ec24f074e",
        ]
        usersFile = "/path/to/.htdigest"
      [entryPoints.http.auth.forward]
        address = "https://authserver.com/auth"
        trustForwardHeader = true
        authResponseHeaders = ["X-Auth-User"]
        [entryPoints.http.auth.forward.tls]
          ca = "path/to/local.crt"
          caOptional = true
          cert = "path/to/foo.cert"
          key = "path/to/foo.key"
          insecureSkipVerify = true

    [entryPoints.http.proxyProtocol]
      insecure = true
      trustedIPs = ["10.10.10.1", "10.10.10.2"]

    [entryPoints.http.forwardedHeaders]
      trustedIPs = ["10.10.10.1", "10.10.10.2"]
      insecure = false

  [entryPoints.https]
    # ...

CLI

For more information about the CLI, see the documentation about Traefik command.

--entryPoints='Name:http Address::80'
--entryPoints='Name:https Address::443 TLS'

!!! note Whitespace is used as option separator and , is used as value separator for the list.
The names of the options are case-insensitive.

In compose file the entrypoint syntax is different:

traefik:
    image: traefik
    command:
        - --defaultentrypoints=powpow
        - "--entryPoints=Name:powpow Address::42 Compress:true"

or

traefik:
    image: traefik
    command: --defaultentrypoints=powpow --entryPoints='Name:powpow Address::42 Compress:true'

All available options:

Name:foo
Address::80
TLS:/my/path/foo.cert,/my/path/foo.key;/my/path/goo.cert,/my/path/goo.key;/my/path/hoo.cert,/my/path/hoo.key
TLS
TLS.MinVersion:VersionTLS11
TLS.CipherSuites:TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA384
TLS.SniStrict:true
TLS.DefaultCertificate.Cert:path/to/foo.cert
TLS.DefaultCertificate.Key:path/to/foo.key
CA:car
CA.Optional:true
Redirect.EntryPoint:https
Redirect.Regex:http://localhost/(.*)
Redirect.Replacement:http://mydomain/$1
Redirect.Permanent:true
Compress:true
WhiteList.SourceRange:10.42.0.0/16,152.89.1.33/32,afed:be44::/16
WhiteList.IPStrategy.depth:3
WhiteList.IPStrategy.ExcludedIPs:10.0.0.3/24,20.0.0.3/24
ProxyProtocol.TrustedIPs:192.168.0.1
ProxyProtocol.Insecure:true
ForwardedHeaders.TrustedIPs:10.0.0.3/24,20.0.0.3/24
Auth.Basic.Users:test:$apr1$H6uskkkW$IgXLP6ewTrSuBkTrqE8wj/,test2:$apr1$d9hr9HBB$4HxwgUir3HP4EsggP/QNo0
Auth.Basic.Removeheader:true
Auth.Digest.Users:test:traefik:a2688e031edb4be6a3797f3882655c05,test2:traefik:518845800f9e2bfb1f1f740ec24f074e
Auth.Digest.Removeheader:true
Auth.HeaderField:X-WebAuth-User
Auth.Forward.Address:https://authserver.com/auth
Auth.Forward.AuthResponseHeaders:X-Auth,X-Test,X-Secret
Auth.Forward.TrustForwardHeader:true
Auth.Forward.TLS.CA:path/to/local.crt
Auth.Forward.TLS.CAOptional:true
Auth.Forward.TLS.Cert:path/to/foo.cert
Auth.Forward.TLS.Key:path/to/foo.key
Auth.Forward.TLS.InsecureSkipVerify:true

Basic

# Entrypoints definition
#
# Default:
# [entryPoints]
#   [entryPoints.http]
#   address = ":80"
#
[entryPoints]
  [entryPoints.http]
  address = ":80"

Redirect HTTP to HTTPS

To redirect an http entrypoint to an https entrypoint (with SNI support).

[entryPoints]
  [entryPoints.http]
  address = ":80"
    [entryPoints.http.redirect]
    entryPoint = "https"
  [entryPoints.https]
  address = ":443"
    [entryPoints.https.tls]
      [[entryPoints.https.tls.certificates]]
      certFile = "integration/fixtures/https/snitest.com.cert"
      keyFile = "integration/fixtures/https/snitest.com.key"
      [[entryPoints.https.tls.certificates]]
      certFile = "integration/fixtures/https/snitest.org.cert"
      keyFile = "integration/fixtures/https/snitest.org.key"

!!! note Please note that regex and replacement do not have to be set in the redirect structure if an entrypoint is defined for the redirection (they will not be used in this case).

Rewriting URL

To redirect an entrypoint rewriting the URL.

[entryPoints]
  [entryPoints.http]
  address = ":80"
    [entryPoints.http.redirect]
    regex = "^http://localhost/(.*)"
    replacement = "http://mydomain/$1"

!!! note Please note that regex and replacement do not have to be set in the redirect structure if an entrypoint is defined for the redirection (they will not be used in this case).

Care should be taken when defining replacement expand variables: $1x is equivalent to ${1x}, not ${1}x (see Regexp.Expand), so use ${1} syntax.

Regular expressions and replacements can be tested using online tools such as Go Playground or the Regex101.

TLS

Static Certificates

Define an entrypoint with SNI support.

[entryPoints]
  [entryPoints.https]
  address = ":443"
    [entryPoints.https.tls]
      [[entryPoints.https.tls.certificates]]
      certFile = "integration/fixtures/https/snitest.com.cert"
      keyFile = "integration/fixtures/https/snitest.com.key"

!!! note If an empty TLS configuration is provided, default self-signed certificates are generated.

Dynamic Certificates

If you need to add or remove TLS certificates while Traefik is started, Dynamic TLS certificates are supported using the file provider.

TLS Mutual Authentication

TLS Mutual Authentication can be optional or not. If it's optional, Træfik will authorize connection with certificates not signed by a specified Certificate Authority (CA). Otherwise, Træfik will only accept clients that present a certificate signed by a specified Certificate Authority (CA). ClientCA.files can be configured with multiple CA:s in the same file or use multiple files containing one or several CA:s. The CA:s has to be in PEM format.

By default, ClientCA.files is not optional, all clients will be required to present a valid cert. The requirement will apply to all server certs in the entrypoint.

In the example below both snitest.com and snitest.org will require client certs

[entryPoints]
  [entryPoints.https]
  address = ":443"
  [entryPoints.https.tls]
    [entryPoints.https.tls.ClientCA]
    files = ["tests/clientca1.crt", "tests/clientca2.crt"]
    optional = false
    [[entryPoints.https.tls.certificates]]
    certFile = "integration/fixtures/https/snitest.com.cert"
    keyFile = "integration/fixtures/https/snitest.com.key"
    [[entryPoints.https.tls.certificates]]
    certFile = "integration/fixtures/https/snitest.org.cert"
    keyFile = "integration/fixtures/https/snitest.org.key"

Authentication

Basic Authentication

Passwords can be encoded in MD5, SHA1 and BCrypt: you can use htpasswd to generate them.

Users can be specified directly in the TOML file, or indirectly by referencing an external file; if both are provided, the two are merged, with external file contents having precedence.

# To enable basic auth on an entrypoint with 2 user/pass: test:test and test2:test2
[entryPoints]
  [entryPoints.http]
  address = ":80"
  [entryPoints.http.auth.basic]
  users = ["test:$apr1$H6uskkkW$IgXLP6ewTrSuBkTrqE8wj/", "test2:$apr1$d9hr9HBB$4HxwgUir3HP4EsggP/QNo0"]
  usersFile = "/path/to/.htpasswd"

Optionally, you can:

  • pass authenticated user to application via headers
[entryPoints]
  [entryPoints.http]
  address = ":80"
  [entryPoints.http.auth]
    headerField = "X-WebAuth-User" # <-- header for the authenticated user
    [entryPoints.http.auth.basic]
    users = ["test:$apr1$H6uskkkW$IgXLP6ewTrSuBkTrqE8wj/", "test2:$apr1$d9hr9HBB$4HxwgUir3HP4EsggP/QNo0"]
  • remove the Authorization header
[entryPoints]
  [entryPoints.http]
  address = ":80"
  [entryPoints.http.auth]
    [entryPoints.http.auth.basic]
    removeHeader = true # <-- remove the Authorization header
    users = ["test:$apr1$H6uskkkW$IgXLP6ewTrSuBkTrqE8wj/", "test2:$apr1$d9hr9HBB$4HxwgUir3HP4EsggP/QNo0"]

Digest Authentication

You can use htdigest to generate them.

Users can be specified directly in the TOML file, or indirectly by referencing an external file; if both are provided, the two are merged, with external file contents having precedence

# To enable digest auth on an entrypoint with 2 user/realm/pass: test:traefik:test and test2:traefik:test2
[entryPoints]
  [entryPoints.http]
  address = ":80"
  [entryPoints.http.auth.digest]
  users = ["test:traefik:a2688e031edb4be6a3797f3882655c05", "test2:traefik:518845800f9e2bfb1f1f740ec24f074e"]
  usersFile = "/path/to/.htdigest"

Optionally, you can!

  • pass authenticated user to application via headers.
[entryPoints]
  [entryPoints.http]
  address = ":80"
  [entryPoints.http.auth]
    headerField = "X-WebAuth-User" # <-- header for the authenticated user
    [entryPoints.http.auth.digest]
    users = ["test:traefik:a2688e031edb4be6a3797f3882655c05", "test2:traefik:518845800f9e2bfb1f1f740ec24f074e"]
  • remove the Authorization header.
[entryPoints]
  [entryPoints.http]
  address = ":80"
  [entryPoints.http.auth]
    [entryPoints.http.auth.digest]
    removeHeader = true # <-- remove the Authorization header
    users = ["test:traefik:a2688e031edb4be6a3797f3882655c05", "test2:traefik:518845800f9e2bfb1f1f740ec24f074e"]

Forward Authentication

This configuration will first forward the request to http://authserver.com/auth.

If the response code is 2XX, access is granted and the original request is performed. Otherwise, the response from the authentication server is returned.

[entryPoints]
  [entryPoints.http]
    # ...
    # To enable forward auth on an entrypoint
    [entryPoints.http.auth.forward]
    address = "https://authserver.com/auth"

    # Trust existing X-Forwarded-* headers.
    # Useful with another reverse proxy in front of Traefik.
    #
    # Optional
    # Default: false
    #
    trustForwardHeader = true

    # Copy headers from the authentication server to the request.
    #
    # Optional
    #
    authResponseHeaders = ["X-Auth-User", "X-Secret"]

      # Enable forward auth TLS connection.
      #
      # Optional
      #
      [entryPoints.http.auth.forward.tls]
      ca = "path/to/local.crt"
      caOptional = true
      cert = "path/to/foo.cert"
      key = "path/to/foo.key"

Specify Minimum TLS Version

To specify an https entry point with a minimum TLS version, and specifying an array of cipher suites (from crypto/tls).

[entryPoints]
  [entryPoints.https]
  address = ":443"
    [entryPoints.https.tls]
    minVersion = "VersionTLS12"
    cipherSuites = [
      "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
      "TLS_RSA_WITH_AES_256_GCM_SHA384"
    ]
      [[entryPoints.https.tls.certificates]]
      certFile = "integration/fixtures/https/snitest.com.cert"
      keyFile = "integration/fixtures/https/snitest.com.key"
      [[entryPoints.https.tls.certificates]]
      certFile = "integration/fixtures/https/snitest.org.cert"
      keyFile = "integration/fixtures/https/snitest.org.key"

Strict SNI Checking

To enable strict SNI checking, so that connections cannot be made if a matching certificate does not exist.

[entryPoints]
  [entryPoints.https]
  address = ":443"
    [entryPoints.https.tls]
    sniStrict = true
      [[entryPoints.https.tls.certificates]]
      certFile = "integration/fixtures/https/snitest.com.cert"
      keyFile = "integration/fixtures/https/snitest.com.key"

Default Certificate

To enable a default certificate to serve, so that connections without SNI or without a matching domain will be served this certificate.

[entryPoints]
  [entryPoints.https]
  address = ":443"
    [entryPoints.https.tls]
    [entryPoints.https.tls.defaultCertificate]
      certFile = "integration/fixtures/https/snitest.com.cert"
      keyFile = "integration/fixtures/https/snitest.com.key"

!!! note There can only be one defaultCertificate set per entrypoint. Use a single set of square brackets [ ], instead of the two needed for normal certificates. If no default certificate is provided, a self-signed certificate will be generated by Traefik, and used instead.

Compression

To enable compression support using gzip format.

[entryPoints]
  [entryPoints.http]
  address = ":80"
  [entryPoints.http.compress]

Responses are compressed when:

  • The response body is larger than 512 bytes
  • And the Accept-Encoding request header contains gzip
  • And the response is not already compressed, i.e. the Content-Encoding response header is not already set.

White Listing

Træfik supports whitelisting to accept or refuse requests based on the client IP.

The following example enables IP white listing and accepts requests from client IPs defined in sourceRange.

[entryPoints]
  [entryPoints.http]
    address = ":80"

    [entryPoints.http.whiteList]
      sourceRange = ["127.0.0.1/32", "192.168.1.7"]
      # [entryPoints.http.whiteList.IPStrategy]
      # Override the clientIPStrategy

By default, Træfik uses the client IP (see ClientIPStrategy) for the whitelisting.

If you want to use another IP than the one determined by ClientIPStrategy for the whitelisting, you can define the IPStrategy option:

[entryPoints]
  [entryPoints.http.clientIPStrategy]
    depth = 4
  [entryPoints.http]
    address = ":80"

    [entryPoints.http.whiteList]
      sourceRange = ["127.0.0.1/32", "192.168.1.7"]
      [entryPoints.http.whiteList.IPStrategy]
      depth = 2

In the above example, if the value of the X-Forwarded-For header was "10.0.0.1,11.0.0.1,12.0.0.1,13.0.0.1" then the client IP would be "10.0.0.1" (clientIPStrategy.depth=4) but the IP used for the whitelisting would be "12.0.0.1" (whitelist.IPStrategy.depth=2).

ClientIPStrategy

The clientIPStrategy defines how you want Træfik to determine the client IP (used for whitelisting for example).

There are several option available:

Depth

This option uses the X-Forwarded-For header and takes the IP located at the depth position (starting from the right).

[entryPoints]
  [entryPoints.http]
    address = ":80"

    [entryPoints.http.clientIPStrategy]

[entryPoints]
  [entryPoints.http]
    address = ":80"

    [entryPoints.http.clientIPStrategy]
      depth = 5

!!! note - If depth is greater than the total number of IPs in X-Forwarded-For, then clientIP will be empty. - If depth is lesser than or equal to 0, then the option is ignored.

Examples:

X-Forwarded-For depth clientIP
"10.0.0.1,11.0.0.1,12.0.0.1,13.0.0.1" 1 "13.0.0.1"
"10.0.0.1,11.0.0.1,12.0.0.1,13.0.0.1" 3 "11.0.0.1"
"10.0.0.1,11.0.0.1,12.0.0.1,13.0.0.1" 5 ""

Excluded IPs

Træfik will scan the X-Forwarded-For header (from the right) and pick the first IP not in the excludedIPs list.

[entryPoints]
  [entryPoints.http]
    address = ":80"

    [entryPoints.http.clientIPStrategy]
      excludedIPs = ["127.0.0.1/32", "192.168.1.7"]

!!! note If depth is specified, excludedIPs is ignored.

Examples:

X-Forwarded-For excludedIPs clientIP
"10.0.0.1,11.0.0.1,12.0.0.1,13.0.0.1" "12.0.0.1,13.0.0.1" "11.0.0.1"
"10.0.0.1,11.0.0.1,12.0.0.1,13.0.0.1" "15.0.0.1,13.0.0.1" "12.0.0.1"
"10.0.0.1,11.0.0.1,12.0.0.1,13.0.0.1" "10.0.0.1,13.0.0.1" "12.0.0.1"
"10.0.0.1,11.0.0.1,12.0.0.1,13.0.0.1" "15.0.0.1,16.0.0.1" "13.0.0.1"
"10.0.0.1,11.0.0.1" "10.0.0.1,11.0.0.1" ""

Default

If there are no depth or excludedIPs, then the client IP is the IP of the computer that initiated the connection with the Træfik server (the remote address).

ProxyProtocol

To enable ProxyProtocol support. Only IPs in trustedIPs will lead to remote client address replacement: you should declare your load-balancer IP or CIDR range here (in testing environment, you can trust everyone using insecure = true).

!!! danger When queuing Træfik behind another load-balancer, be sure to carefully configure Proxy Protocol on both sides. Otherwise, it could introduce a security risk in your system by forging requests.

[entryPoints]
  [entryPoints.http]
    address = ":80"

    # Enable ProxyProtocol
    [entryPoints.http.proxyProtocol]
      # List of trusted IPs
      #
      # Required
      # Default: []
      #
      trustedIPs = ["127.0.0.1/32", "192.168.1.7"]

      # Insecure mode FOR TESTING ENVIRONNEMENT ONLY
      #
      # Optional
      # Default: false
      #
      # insecure = true

Forwarded Header

Only IPs in trustedIPs will be authorized to trust the client forwarded headers (X-Forwarded-*).

[entryPoints]
  [entryPoints.http]
    address = ":80"

    # Enable Forwarded Headers
    [entryPoints.http.forwardedHeaders]
      # List of trusted IPs
      #
      # Required
      # Default: []
      #
      trustedIPs = ["127.0.0.1/32", "192.168.1.7"]
      
      # Insecure mode
      #
      # Optional
      # Default: false
      #
      # insecure = true