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Riyad Kalla
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Inspirational People
Tutorials
Beginners Guide to Securing a Linux Server
Adding a non-root user
Setting strong passwords
Enabling sudo for your non-root account
Applying updates / Enable automatic updates
Disabling root login via SSH
Moving SSH off default port 22
Disabling passwords for SSH login (Use public/private keys)
Enabling 2-Factor Authentication with SSH
Disabling the root account
Ban Malicious IP Addresses (Fail2ban)
Disabling IPv6
Enabling the firewall
Hardening the Linux kernel
Disabling public internet connectivity
Securing connection between two servers
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Disabling public internet connectivity
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