Firewall - andreydiveev/wiki GitHub Wiki

Install:

# apt-get install ufw

Open port:

# ufw allow 1194/udp

Open both tcp and udp:

# ufw allow 1194

Remove rule:

# ufw delete allow 1194/udp

Enable:

# ufw enable

Disable:

# ufw disable

Show rules:

# ufw status

Rules path:

/lib/ufw/user.rules

IPv4 forwarding:

# enable
sudo sysctl -w net.ipv4.ip_forward=1

# disable
sudo sysctl -w net.ipv4.ip_forward=1

# change permanently
# net.ipv4.ip_forward=1
sudo mcedit /etc/sysctl.conf

# apply
sudo sysctl -p