Hi,
In order to have a working tcp proxy, you need to have a tcp.services too.
https://docs.traefik.io/v2.0/routing/services/#configuring-tcp-services
[tcp]
[tcp.routers]
[tcp.routers.wcam]
entrypoints = ["wcam"]
rule = "HostSNI(`*`)"
service="wcam"
[tcp.services]
[tcp.services.wcam.loadbalancer]
[[tcp.services.wcam.loadbalancer.servers]]
address="192.168.90.200:55555"