# IPsec

Internet Protocol Security - IPsec - is a suite of [protocols](/glossary/p/protocol) for [authentication](/glossary/a/authentication) and [encryption](/glossary/e/encryption) of network traffic through [Security Associations](/glossary/s/sa), [Authentication Headers](/glossary/a/ah), [Encapsulating Security Payloads](/glossary/e/esp), and [ISAKMP](/glossary/i/isakmp).