Kali Linux version: Kali2019/2020
NTP means Network Time Protocol.
- Install NTP service
    apt install ntp
- Check ntp
    dpkg --get-selections ntp
- Modify ntp.confvi /etc/ntp.conf
- Find key word
    pool 0.debian.pool.ntp.org iburst pool 1.debian.pool.ntp.org iburst pool 2.debian.pool.ntp.org iburst pool 3.debian.pool.ntp.org iburstInstead of the 4 lines pools with your own NTP Server. For example: pool ntp.api.bz iburst # Shanghai server pool asia.pool.ntp.org iburst # Taiwang server pool time.nist.gov iburst # Can't to connect in China Because GFW of China pool time.windows.com iburst # Can't to connect in China Because GFW of China
- Enable NTP on Boot
    systemctl enable ntp.service
- Restart NTP service
    systemctl restart ntp.serviceCheck it. systemctl status ntp.serviceOr ntpq -pn
