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Net+ Chapter 1
Net+ Chapter 1

... encryption processes that are designed to provide authentication for users and services that need to communicate and be validated on a network. • Kerberos provides a way to prove identity in order to gain access to other network resources. • Kerberos works through the use of encrypted tickets and se ...
SSL and IPSec
SSL and IPSec

motorola-review-Feb0.. - Computer Science Division
motorola-review-Feb0.. - Computer Science Division

... Server Key-exchange message Server Hello Done Client Key-exchange message Change cipher spec TLS Finished Error_Alert (Fatal level) Close_notify Close_notify ...
Computer and Network Security Group
Computer and Network Security Group

... personal identification of the subject ...
Web Security
Web Security

... WWW-Authenticate • Secure Sockets Layer (SSL) – Invented by Netscape and made public domain for everyone’s use – An additional layer to the TCP/IP stack that sits between the Application and Transport layers • ensures that all application data is encrypted but TCP/IP headers are not • usually run o ...
Web Security
Web Security

... WWW-Authenticate • Secure Sockets Layer (SSL) – Invented by Netscape and made public domain for everyone’s use – An additional layer to the TCP/IP stack that sits between the Application and Transport layers • ensures that all application data is encrypted but TCP/IP headers are not • usually run o ...
Performance-aware Security for Unicast Communication in Hybrid Satellite Networks
Performance-aware Security for Unicast Communication in Hybrid Satellite Networks

... How
to
enable
security
similar
to
IPSEC
and
SSL
in
hybrid
satellite
networks,
while
preserving
functionality
of
TCP
PEPs
and
HTTP
proxy?
 
Network
Layer
Security:
Layered
IPSEC
(LES)
with
modified
IKE
 ...
VPNs, PKIs, ISSs, SSLs with narration
VPNs, PKIs, ISSs, SSLs with narration

... • Then, exchange symmetric session key • Then can communicate securely using symmetric session key and messageby-message authentication ...
Organizations That Use TLS/SSL
Organizations That Use TLS/SSL

... exposed. Exposed data and session ID's can be intercepted which means the application is vulnerable to exploit. As OWASP states, "Applications frequently fail to authenticate, encrypt, and protect the confidentiality and integrity of sensitive network traffic. When they do, they sometimes support we ...
Protocol Overview
Protocol Overview

... • DES, 3DES, RC4 ...
Protocol Overview
Protocol Overview

... • DES, 3DES, RC4 ...
Rocket® Blue Zone Security Server
Rocket® Blue Zone Security Server

... access to host systems, increasing data stream privacy, and strengthening authentication. Rocket® BlueZone Security Server secures confidential information, authenticates users and reinforces network and perimeter security. ...
Slides for lecture 26
Slides for lecture 26

... – Can provide security over insecure networks – Users choose when to use PGP; user must be involved – Alice’s signature on an email proves that Alice actually generated the message, and it was received unaltered; also non-repudiation • In contrast, SSL secures “the connection” from Alice’s computer; ...
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Transport Layer Security

Transport Layer Security (TLS) and its predecessor, Secure Sockets Layer (SSL), both of which are frequently referred to as 'SSL', are cryptographic protocols designed to provide communications security over a computer network. They use X.509 certificates and hence asymmetric cryptography to authenticate the counterpart with whom they are communicating, and to negotiate a symmetric session key. This session key is then used to encrypt data flowing between the parties. This allows for data/message confidentiality, and message authentication codes for message integrity and as a by-product, message authentication. Several versions of the protocols are in widespread use in applications such as web browsing, email, Internet faxing, instant messaging, and voice-over-IP (VoIP). An important property in this context is forward secrecy, so the short-term session key cannot be derived from the long-term asymmetric secret key.As a consequence of choosing X.509 certificates, certificate authorities and a public key infrastructure are necessary to verify the relation between a certificate and its owner, as well as to generate, sign, and administer the validity of certificates. While this can be more beneficial than verifying the identities via a web of trust, the 2013 mass surveillance disclosures made it more widely known that certificate authorities are a weak point from a security standpoint, allowing man-in-the-middle attacks (MITM).The Internet Protocol Suite places TLS and SSL as tools into the application layer, while the OSI model characterizes them as being initialized in Layer 5 (session layer) and operating in Layer 6 (presentation layer). The session layer employs a handshake using an asymmetric cipher in order to establish cipher settings and a shared key for a session; the presentation layer encrypts the rest of the communication using a symmetric cipher and the session key. TLS and SSL may be characterized to work on behalf of the underlying transport layer protocol, which carries encrypted data.TLS is an Internet Engineering Task Force (IETF) standards track protocol, first defined in 1999 and updated in RFC 5246 (August 2008) and RFC 6176 (March 2011). It is based on the earlier SSL specifications (1994, 1995, 1996) developed by Netscape Communications for adding the HTTPS protocol to their Navigator web browser.
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