RCON is UDP on the game port: drop the TCP 27015 rule
Browse SourceGoldSrc RCON shares the game's UDP port; HLDS does not listen on TCP.
1 changed file
with 1 additions and 2 deletions
fix-server-not-in-master-list/en.md
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| @@ -20,8 +20,7 @@ read_time: "8 min read" | ||
| 20 | 20 | |
| 21 | 21 | <h2>3. Your game port must be reachable from the internet</h2> |
| 22 | 22 | <p>The server browser does not just trust the heartbeat — it (and every client) queries your game port with an A2S_INFO request over UDP. If inbound UDP 27015 is blocked, the server may register but shows as unresponsive or never appears. Open it:</p> |
| 23 | -<pre>sudo ufw allow 27015/udp | |
| 24 | -sudo ufw allow 27015/tcp</pre> | |
| 23 | +<pre>sudo ufw allow 27015/udp</pre> | |
| 25 | 24 | <p>Then verify the port is actually reachable from <em>outside</em> your network — a local test proves nothing. Use an external A2S/UDP port checker against <code>YOUR_PUBLIC_IP:27015</code>, or ask someone off your network to <code>connect</code> by IP. See <a href="/tutorials/cs16-server-firewall-ports">which ports to open</a> for the full list.</p> |
| 26 | 25 | |
| 27 | 26 | <h2>4. NAT and public IP</h2> |
| 28 | 27 |
