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IPsec
(redirected from Encapsulating Security Payload)

    Also found in: Acronyms, Wikipedia 0.02 sec.

IPsec

(IP SECurity) A security protocol from the IETF that provides authentication and encryption over the Internet. Unlike SSL, which provides services at layer 4 and secures two applications, IPsec works at layer 3 and secures everything in the network. Also unlike SSL, which is typically built into the Web browser, IPsec requires a client installation. IPsec can access both Web and non-Web applications, whereas SSL requires workarounds for non-Web access such as file sharing and backup.

IPsec is supported by IPv6. Since IPsec was designed for the IP protocol, it has wide industry support and is expected to become the standard for virtual private networks (VPNs) on the Internet. See VPN, IKE, IPv6 and security protocol.

(networking, protocol, security)IPsec - ("IP Secure"?) A protocol that provides security for transmission of sensitive information over unprotected networks such as the Internet. IPsec acts at the network layer, protecting and authenticating IP packets between participating devices ("peers"), such as Cisco routers.

IETF IPsec.


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? Mentioned in ? References in periodicals archive
 
The original packet may be 1,490 bytes, however, it increases to 1,544 bytes after new IP and Encapsulating Security Payload (ESP) headers, trailer information, and Message Authentication Code (MAC) value are added as called out in IPSec.
ENCRYPTION ISSUES: MOVING TOWARD HIGHER PERFORMANCE NETWORK SECURITY ... by Muegge, Mark / Computer Technology Review
Inkra received certification for all three VPNC IPsec conformance tests, which require that its VPN gateway initiate an IPsec Encapsulating Security Payload (ESP) tunnel to each of two test gateways and successfully complete each conformance test as follows:
Inkra's Virtual Service Switch Family Meets IPsec VPN Standards; ... by Business Wire
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