UFW Odmawiaj z IP
# Totally block
ufw deny from 123.456.543 to any
# Block from specific ports
ufw deny from 123.456.543 to any port your_port
RicarHincapie
# Totally block
ufw deny from 123.456.543 to any
# Block from specific ports
ufw deny from 123.456.543 to any port your_port