By default, n8n can be accessed by everybody. This is okay if you only have it running locally but if you deploy it on a server which is accessible from the web, you have to make sure that n8n is protected. Right now we have very basic protection in place using basic-auth. It can be activated by setting the following environment variables:

export N8N_BASIC_AUTH_ACTIVE=true
export N8N_BASIC_AUTH_USER=<USER>
export N8N_BASIC_AUTH_PASSWORD=<PASSWORD>