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IPsec

IPsec

(also Internet Protocol Security)

IPsec definition

IPsec is a suite of protocols for securing internet protocol communications. It authenticates and encrypts each IP packet in a data stream.

See also: remote access server, secure connection, network layer, VoIP

Where is IPsec used?

  • Virtual private networks (VPNs). The most common use of IPsec. VPNs use IPsec to secure connections between remote users and a corporate network, or between two or more branches of an organization.
  • Securing remote access. IPsec secures communication between remote workers and their office networks.
  • Site-to-site connections. For connecting different sites of an organization (like branch offices), IPsec is used to create a secure tunnel over the internet.
  • Network layer security. Unlike other security protocols that operate at the application layer, IPsec operates at the network layer — so it secures all traffic within an IP network, providing a security solution that’s not limited to specific applications or services.
  • Secure file transfer. IPsec secures file transfer protocols like FTP or SFTP.
  • Encrypted voice and video communications. IPsec secures VoIP and video conferencing communications.
  • IoT (Internet of Things) security. IPsec is increasingly used to secure communication between IoT devices and control servers.
  • Government communications. Due to its high level of security, IPsec is often used in government and military networks to protect classified or sensitive information.
  • Secure data backups. Especially when data is transmitted to remote backup locations.

Further reading

Ultimate digital security

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