phudinhtruongk18 / ubuntunote

UbuntuNote

VPN

Instruction: https://notthebe.ee/blog/creating-your-own-vpn/

$ wget https://raw.githubusercontent.com/angristan/openvpn-install/master/openvpn-install.sh
$ sudo bash openvpn-install.sh

get ssh key (ensure that you already have ssh keys)

ssh-copy-id -p 22 root@ip 

sudoers

sudo visudo -f /etc/sudoers # username ALL=(ALL:ALL) ALL

adduser bill sudo
deluser bill sudo

ssh copy

scp -P 22 username@b:/path/to/file /path/to/destination

heavy

du -aBM 2>/dev/null | sort -nr | head -n 50 | more

change ssh setting

vi /etc/ssh/sshd_config
'
Port 69 # ufw allow 69/tcp
PasswordAuthentication no
PermitRootLogin no
'
sudo systemctl restart ssh

check auth log

sudo cat /var/log/auth.log

port

ufw allow 22
ufw status

zip

zip -r foo.zip .
unzip file.zip