user42587: I wanted to know if there's any privacy considerations to take into account when opening the bitcoin ports on the router for a bitcoin node.
I'm using -onlynet=onion in the bitcoin.conf file and I did not modify any tor config file.
I also wonder if a remote port scan can detect I have a bitcoin port open in the router and whether changing to a random port would help privacy. thanks.

user78962: If you are running -onlynet=onion, there is no need to open any router ports. Perhaps I misunderstand your question. 
If your chain state is caught up, and bitcoind+Tor is properly configured, you should be serving data to other nodes, even behind an otherwise locked-down home router. 
What result do you get when running 
$ bitcoin-cli getpeerinfo | grep true


42587: <p>I wanted to know if there's any privacy considerations to take into account when opening the bitcoin ports on the router for a bitcoin node.</p>

<p>I'm using <code>-onlynet=onion</code> in the bitcoin.conf file and I did not modify any tor config file.</p>

<p>I also wonder if a remote port scan can detect I have a bitcoin port open in the router and whether changing to a random port would help privacy. thanks.</p>
 78962: <p>If you are running -onlynet=onion, there is no need to open any router ports. Perhaps I misunderstand your question. </p>

<p>If your chain state is caught up, and bitcoind+Tor is properly configured, you should be serving data to other nodes, even behind an otherwise locked-down home router. </p>

<p>What result do you get when running </p>

<pre><code>$ bitcoin-cli getpeerinfo | grep true
</code></pre>
