What is Traefik?
Traefik is a reverse proxy in the grand scheme of things basically provides the user the ability to reach and application through a subdomain. With traefik, you can reach your sites such as portainer.mydomain.com and netdata.mydomain.com.
Traefik Categories (Click Below)
Do I Need Traefik?
No, Traefik is not required for PlexGuide. Traefik is only useful on servers with their own IPv4 address. Basically if your running a home server, Traefik is useless you are utilizing DuckDNS. You can reach your sites via domain:port or ipv4:port if you choose to.
PG YouTube: TRAEFIK Reverse Proxy Basics
Traefik is a modern reverse proxy that not enables the use of your subdomains, but has the ability to provide authentication and issue SSL certificate using Lets Encrypt.
Note: Port 80 and 443 have to be open for Traefik to work. By default, your ports should work. If you have Caddy, CPanel, or some server website hosting software installed; you WILL have problems. Without Traefik being able to route through 80 and 443, your certificates will not work!