diff --git a/README.md b/README.md
index 05c0dab..7b64a76 100644
--- a/README.md
+++ b/README.md
@@ -32,9 +32,13 @@ After these edits, you'll need to restart your bash session or reconnect to your
 
 ```sh
 iptables -I INPUT -p udp --dport 27016 -j ACCEPT
+iptables -I INPUT -p tcp --dport 27016 -j ACCEPT
 iptables -I INPUT -p udp --dport 7778 -j ACCEPT
+iptables -I INPUT -p tcp --dport 7778 -j ACCEPT
 ```
 
+NB: Change the ports according to the ones set in your `arkmanager.cfg` file.
+
 ## Install ARK Server Tools
 
 To install ARK Server Tools run this command: