Tips for preventing servers from being attacked (recommended) _ Server other

Teach you some simple configuration to prevent the server from being attacked!

1. Add new users and assign root permissions:

Log in with root privileges first

AddUser xxx (you set the username)

passwd xxx (omit input password)

Put in the wheel group: gpasswd-a XXX Wheel

Switch to XXX User: su xxx (no permissions at this time)

command preceded by sudo and has root permission action

2. Prohibit the Linux root login:

sudo vim/etc/ssh/sshd_config
Permitrootlogin Yes change to Permitrootlogin no save exit

Reload Ssh:sudo Systemctl Reload sshd

3. Modify the SSH link default port 22:

sudo vim/etc/ssh/sshd_config

Port 22 changed to port 10000+ (optional, not too big, save exit)

Reload Ssh:sudo Systemctl Reload sshd

The above is a small set to the introduction of the prevention of the server was attacked the coup, hope to help everyone, if you have any questions please give me a message, small series will promptly reply to everyone. Here also thank you very much for the cloud Habitat Community website support!