Added solution

docs/rpi-documentation/websockets.md

@@ -12,7 +12,7 @@ There are different languages to serve websockets with, but we are going to use
 ### Ports
 We can only use certain ports like 113, 80, 443. These are common ports and are not blocked by firewalls. Something in the network is blocking all other ports which makes it hard to use websockets.
 
-
+A solution for this is to use a reverse proxy. (See [Reverse Proxy](./Reverse-Proxy.md))
 
 #### Sources: 
 * https://websockets.readthedocs.io/en/stable/index.html