A bootstrapping / hardening CentOS bash script. It is meant to be used on new systems.
The motivation for this script is to easily serve up web servers / microservices.
- Automatic yum updates
- Idle users will be disconnected after 15 minutes
- Secure SSH Daemon
- Set SSH to a random number
- Creates an
adminuser - Only they can login
- Two-Factor Authentication (2FA)
- Creates a swap file
- Synchronizes a specified time zone
- Password policies
- Passwords will expire every 180 days
- Passwords may only be changed once a day
- Block common network attacks
- Syn Floods
- Fragmented Packets
- Malformed XMAS Packets
- Drop NULL packets
- Limit pings to 3 per second and bursts of 25
- Discourage Port Scanning
- Connection tracking
- Install Docker (optional)
- Install Go (optional)
- Install Gitlab Runner (optional)
- Register Gitlab Runner (optional)
- Install DDoS Defalate - https://github.com/jgmdev/ddos-deflate
- Install CHKROOTKIT - http://www.chkrootkit.org
- Install Root Kit Hunter (rkhunter) - http://rkhunter.sourceforge.net
- Install Linux Socket Monitor (LSM) - Runs in the background and watches for changes in sockets
As root user, execute
source <(curl -s https://raw.githubusercontent.com/nikitabuyevich/bootstrap-centos/master/bootstrap-centos.sh)- CentOS - Linux distribution that is a consistent, manageable platform that suits a wide variety of deployments
By default, the only TCP ports which are exposed are HTTP / HTTPS / SSH. Modify the TCP_PORTS variable if you wish to add more.
Update this script as it fits your needs. For example, this script includes an optional Gitlab Runner install. Feel free to remove it if you have no use for it.
- Bash - Unix shell and command language
- Nikita Buyevich - nikitabuyevich.com
This project is licensed under the MIT License - see the LICENSE file for details.
Forked and modified from https://www.limestonenetworks.com/support/knowledge-center/11/83/hardening_centos.html