# dev-server Serve a web application Builder properties can be configured in angular.json when defining the builder, or when invoking it. ## Properties ### allowedHosts Type: `string` Possible values: `host.com,host2.com`, `.host.com` This option allows you to whitelist services that are allowed to access the dev server. ### buildTarget Type: `string` Target which builds the application ### host Default: `localhost` Type: `string` Host to listen on. ### liveReload Default: `true` Type: `boolean` Whether to reload the page on change, using live-reload. ### open Default: `false` Type: `boolean` Open the application in the browser. ### port Default: `4200` Type: `number` Port to listen on. ### publicHost Type: `string` Public URL where the application will be served ### ssl Default: `false` Type: `boolean` Serve using HTTPS. ### sslCert Type: `string` SSL certificate to use for serving HTTPS. ### sslKey Type: `string` SSL key to use for serving HTTPS. ### watch Default: `true` Type: `boolean` Watches for changes and rebuilds application