20 Linux Server Hardening Security Tips


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Cloud Computing

Securing your Linux server is important to protect your data, intellectual property, and time, from the hands of crackers (hackers). The system administrator is responsible for security Linux box. In this first part of a Linux server security series, I will provide 20 hardening tips for default installation of Linux system.

#1: Encrypt Data Communication

All data transmitted over a network is open to monitoring. Encrypt transmitted data whenever possible with password or using keys / certificates.

  1. Use scp, ssh, rsync, or sftp for file transfer. You can also mount remote server file systemor your own home directory using special sshfs and fuse tools.
  2. GnuPG allows to encrypt and sign your data and communication, features a versatile key managment system as well as access modules for all kind of public key directories.
  3. Fugu is a graphical frontend to the commandline Secure File Transfer application (SFTP). SFTP is similar…

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