As @jonsyusaid, BE CAREFUL with changes made in your lnd.conf and node in general.
At least make copies and have all steps you’ve done documented in some notepad.
But the question is: what do you want to achieve with these changes, because each aspect have its own solutions more or less complicated or s simple.
- you want to access your node on SSH from outside your LAN?
- you want to connect wallets to your node without Tor?
- you want just that your LN node is also visible on clearnet? For this aspect, only adding your public IP (if you have a static one)
externalip=192.241.154.55:9735in your lnd.conf is enough. - all above?
You could look into using Zerotier.com or tailscale.com as solutions to use your node from outside, without Tor.
Here is an example: https://openoms.github.io/bitcoin-tutorials/zerotier/
Please read the Umbrel troubleshooting manual for more modification needed (and tested)