Firewall Rules

gistfile1.sh

# Reset all rules
sudo ufw reset --force

# DNS Requests
sudo ufw allow out 53/udp

# HTTP, HTTPS, SMTP, IMAP
sudo ufw allow out 80,443,587,993/tcp

# Instant Messaging
sudo ufw allow out 6667,1863,5222,5223,8010/tcp

# Enable rules
sudo ufw enable

# VOIP & file transfers
sudo ufw allow out 6891:6900,6901/udp
sudo ufw allow out 6891:6900,6901/tcp

# Last rule: Blocks connections not allowed in rule set
sudo ufw deny in to any

# Restart
sudo ufw disable && sudo ufw enable

# Show rules
sudo ufw status