diff --git a/docs/behind-nat.md b/docs/behind-nat.md
index 3453aad..3a8d1e6 100644
--- a/docs/behind-nat.md
+++ b/docs/behind-nat.md
@@ -10,5 +10,5 @@ $ ip addr add 144.76.97.34/32 dev ens3
 Specific to your linux distribution. Use a search engine of your choice. ;)
 
 ## Ports
-Also don't forget to forward all necassary ports listed in http://docs.bigbluebutton.org/2.2/configure-firewall.html
+Also don't forget to forward all necassary ports listed in https://docs.bigbluebutton.org/admin/configure-firewall.html