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...ec is a legitimate exception, although there probably need to be IPSec and IPSEC redirects, as well as Internet Protocol Security (and maybe IP Security Arc

== IPsec == There is a scanner specifically to locate and probe [[IPsec]] security gateways, called [http://www.nta-monitor.com/tools/ike-scan/ IKE

{{r|IPsec}}

...er a field modulo a large prime (1536 bits for one heavily used group in [[IPsec]]) or a field defined by an [[elliptic curve]]. [[Better than nothing security]], or BTNS, is basically [[IPsec]] done without authentication

...encryption devices &mdash; whether hardware encryption at link level or [[IPsec]] gateways at network level &mdash; can provide an encryption service to ma ...N | FreeS/WAN]] project, who built OE into a [[Linux]] implementation of [[IPsec]] and wrote an RFC<ref>{{citation

[[IPsec]] uses an HMAC for packet-level authentication. RFC 2104 <ref>{{cite paper

* project leader for FreeSWAN | FreeS/WAN, a Linux implementation of IPsec and opportunistic encryption

...he current version is RFC 2437. RSA is used in many protocols, including [[IPsec]], [[Open PGP]] and [[DNS security]]. ...ntations do it differently. In an [[IPsec#Complications | example]] from [[IPsec]], the [[FreeSWAN |FreeS/WAN]] implementer used the product while [[PGPnet]

'''IPsec''' (also written as IPSEC) stands for '''I'''nternet '''P'''rotocol '''Sec'''urity. It defines a basi ...ed implies that not necessarily all IPv6 systems will actually make use of IPsec, but functionality is required as specified by the [[RFC]] (RFCs serve as "

...of operation]] and how these ciphers should be used in protocols such as [[IPsec]], [[Open PGP]], [[SSL]] and [[SSH]]. For details, see the linked articles

Cipher block chaining is much the most '''widely used mode'''. [[IPsec]] specifies it as the only permitted mode. [[PGP]] and [[TLS]] use it as we Much of the work has been done in the context of Internet standards such as [[IPsec]], where it addresses a significant performance issue. See RFC 5116 "An Int

...key variant is widely used; for example RFC 2451 specifies it for use in [[IPsec]].

| url = http://www.ietf.org/rfc/rfc2890.txt}}</ref> and IPSec. The IPSec case may involve either the Authentication Header alone, or the Authenticat

...r aspect of Internet Protocol version 6 deployment may be increased use of IPsec, which, in turn, needs a secure DNS as a trusted repository for public keys ...se of client and server authentication, probably based on some features of IPsec.<ref name=RFC4301>{{citation

The [[Internet Key Exchange]] protocol automates key management for [[IPsec]]. It can be set to re-key after a fixed time or after a fixed amount of da

...s tunnel among customer sites using a secure tunneling protocol, such as [[IPSec]], over physical connections to Internet Service Providers. The ISP, in suc ...of different encrypting protocols may be used to construct a secure VPN. [[IPsec]] is most often used for secure VPNs between an organisation's offices and

...elated products appeared, PGP disk for disk encryption, PGP [[VPN]] with [[IPsec]], and PGP Firewall. However, it proved an unprofitable product for NA. In

...ent undetected. This technique is used in many security systems, such as [[IPsec]], to ensure [[information security#integrity|data integrity]]. ...very wide use. For example, it is used in protocols such as [[PGP]] and [[IPsec]] and in [[random number]] generators such as [[Intel]]'s hardware generato

...the receiver. In the [[Diffie-Hellman]] key agreement protocol, used in [[IPsec]] and other systems, public key techniques provide authentication.

...compatibility (e.g., [[Generic Route Encapsulation]]) or security (e.g., [[IPSec Tunnel Mode]]) also may do "layer 3.5". Stateful firewalls and network add