Add host parameter to configure the interface Authelia listens on.

config.template.yml

@@ -2,12 +2,11 @@
 #                   Authelia configuration                    #
 ###############################################################
 
-# The port to listen on
+# The host and port to listen on
+host: 0.0.0.0
 port: 9091
 
-# Log level
-#
-# Level of verbosity for logs
+# Level of verbosity for logs: info, debug, trace
 logs_level: debug
 
 # The secret used to generate JWT tokens when validating user identity by

internal/configuration/schema/configuration.go

@@ -2,6 +2,7 @@ package schema
 
 // Configuration object extracted from YAML configuration file.
 type Configuration struct {
+	Host                      string `yaml:"host"`
 	Port                      int    `yaml:"port"`
 	LogsLevel                 string `yaml:"logs_level"`
 	JWTSecret                 string `yaml:"jwt_secret"`

internal/configuration/validator/configuration.go

@@ -11,6 +11,10 @@ var defaultLogsLevel = "info"
 
 // Validate and adapt the configuration read from file.
 func Validate(configuration *schema.Configuration, validator *schema.StructValidator) {
+	if configuration.Host == "" {
+		configuration.Host = "0.0.0.0"
+	}
+
 	if configuration.Port == 0 {
 		configuration.Port = defaultPort
 	}

internal/configuration/validator/configuration_test.go

@@ -9,6 +9,7 @@ import (
 
 func newDefaultConfig() schema.Configuration {
 	config := schema.Configuration{}
+	config.Host = "127.0.0.1"
 	config.Port = 9090
 	config.LogsLevel = "info"
 	config.JWTSecret = "a_secret"
@@ -49,6 +50,17 @@ func TestShouldValidateAndUpdatePort(t *testing.T) {
 	assert.Equal(t, 8080, config.Port)
 }
 
+func TestShouldValidateAndUpdateHost(t *testing.T) {
+	validator := schema.NewStructValidator()
+	config := newDefaultConfig()
+	config.Host = ""
+
+	Validate(&config, validator)
+
+	assert.Len(t, validator.Errors(), 0)
+	assert.Equal(t, "0.0.0.0", config.Host)
+}
+
 func TestShouldValidateAndUpdateLogsLevel(t *testing.T) {
 	validator := schema.NewStructValidator()
 	config := newDefaultConfig()

internal/server/server.go

@@ -100,7 +100,7 @@ func StartServer(configuration schema.Configuration, providers middlewares.Provi
 		ctx.SendFile(path.Join(publicDir, "index.html"))
 	}
 
-	portPattern := fmt.Sprintf(":%d", configuration.Port)
+	portPattern := fmt.Sprintf("%s:%d", configuration.Host, configuration.Port)
 	logging.Logger().Infof("Authelia is listening on %s", portPattern)
 
 	logging.Logger().Fatal(fasthttp.ListenAndServe(portPattern,