Universal Firewall

Turn on Universal Firewall (UFW)

These steps will enable Universal Firewall and open ports for Geth and Teku

Allow Go Ethereum on port 30303

sudo ufw allow 30303

Allow Teku on port 9000

sudo ufw allow 9000

Enable UFW

sudo ufw enable

Show UFW Status

sudo ufw status numbered

It should look something like this:

UFW Enabled and Active

Next, we'll install Geth and begin syncing to the Kiln network