Editing 430.ch Reconnaissance Report (section)

=== Port 6567 on <code>ov.430.ch</code> ===

TCP version probes returned an unrecognized 8-byte binary response pattern on many payloads:

<pre>
\0\x06\xfe\x04...
</pre>

Nmap labeled it:

<pre>
6567/tcp open esp?
</pre>

Targeted UDP checks:

<pre>
6567/udp open|filtered esp
27015/udp closed        halflife       (on ov)
27016/udp closed        unknown        (on ov)
</pre>

On the main host, UDP checks for the small selected set were inconclusive:

<pre>
6567/udp  open|filtered
27015/udp open|filtered
27016/udp open|filtered
</pre>

Interpretation:

* <code>6567</code> is the common/default Mindustry server port.
* Public Mindustry server docs say to allow port <code>6567</code> TCP and UDP for server hosting.
* This does not prove Mindustry, but it is a strong hypothesis.

Reference used:

* <code>https://mindustrygame.github.io/wiki/servers/</code>