Ubuntu relatives

[yufang67]

Enable/disable firewall

https://linuxconfig.org/how-to-enable-disable-firewall-on-ubuntu-18-04-bionic-beaver-linux

sudo ufw status
sudo ufw status verbose

sudo ufw enable
sudo ufw disable

sudo ufw allow ssh
sudo ufw allow 22

sudo ufw allow http
sudo ufw allow 80

sudo ufw allow 6000:6007/tcp
sudo ufw allow 6000:6007/udp

sudo ufw allow from 203.0.113.4
sudo ufw allow from 203.0.113.4 to any port 22

VScode does not work

error: x io error received (x server probably went away)

sudo sed -i 's/BIG-REQUESTS/_IG-REQUESTS/' /usr/lib/x86_64-linux-gnu/libxcb.so.1

change password

sudo passwd

Error

vscode: /usr/share/code/bin/../code: error while loading shared libraries: libxcb-dri3.so.0

sudo apt install chromium-browser -y

Ref

https://www.digitalocean.com/community/tutorials/how-to-set-up-a-firewall-with-ufw-on-ubuntu-18-04

microsoft/vscode#3451