Security

There are many steps you can take to strengthen the security posture of your system. In this section you will find explanations of various concepts related to security.

General configuration

• Introduction to security for a high-level overview of security in Ubuntu

• Security suggestions provides general recommendations for any Ubuntu system, from straightforward setups to more advanced and complex systems

Authentication

• Introduction to Kerberos, the network authentication system

• Introduction to SSSD, the collection of daemons that handle authentication from various network sources

• About DNSSEC, the security extension for the Domain Name System (DNS).

Cryptography

• Our cryptography section explains in detail about the different cryptographic libraries and configurations you might encounter.

• Certificates are issued, stored and signed by a Certificate Authority (CA) to create trusted connections.

Virtual Private Network (VPN)

VPNs are commonly used to provide encrypted, secure access to a network.

• Introduction to WireGuard VPN, a popular and modern VPN implementation

• OpenVPN clients provides a list of client implementations that can be used with a GUI across platforms.

See also

• How-to: Security