user132639: I currently run a lightning node on umbrel on a raspberry pi. I want to experiment with c-lightning and want to run a new c-lightning node on my ubuntu laptop which utilizes the blockchain data from my existing umbrel node.
Which files do I need to configure for that and in doing that do I reduce my umbrel node's security in any way?
Thanks in advance.

user91194: You need to put the following in your conf file and have Bitcoin Core installed on your Ubuntu machine too.
bitcoin-rpcuser=foo
bitcoin-rpcpassword=foo
bitcoin-rpcurl=http://127.0.0.1:18332

Core Lightning will use the bitcoin-cli to make a connection with your bitcoind on the other machine!

132639: <p>I currently run a lightning node on umbrel on a raspberry pi. I want to experiment with c-lightning and want to run a new c-lightning node on my ubuntu laptop which utilizes the blockchain data from my existing umbrel node.</p>
<p>Which files do I need to configure for that and in doing that do I reduce my umbrel node's security in any way?</p>
<p>Thanks in advance.</p>
 91194: <p>You need to put the following in your conf file and have Bitcoin Core installed on your Ubuntu machine too.</p>
<pre><code>bitcoin-rpcuser=foo
bitcoin-rpcpassword=foo
bitcoin-rpcurl=http://127.0.0.1:18332
</code></pre>
<p>Core Lightning will use the bitcoin-cli to make a connection with your bitcoind on the other machine!</p>
