Definition of IPSec
What is IPSec?
A standard for securing Internet Protocol (IP) communications by encrypting and authenticating all IP packets.
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IPSec
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IPSec in VoIP Networks
IPsec is widely used to provide secure access to corporate private networks. IPsec is specified by TISPAN and 3GPP for both access, core and interconnect applications. However, IPsec and the current range of corporate network edge Network Address and Port Translators (NAPTs) are not compatible with the Next Gen services provided by VoIP architectures. This technical note describes the problems and the solution defined by TISPAN.
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Configuring IPsec/IKE on Solaris, Part 1
The IP Security Protocol (IPsec) and the Internet Key Exchange (IKE) protocol are designed to permit system and network administrators the capability to protect traffic between two systems. These systems can be network devices or individual hosts.
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Configuring IPSec and Ike on Solaris, Part 2
This article will discuss configuring IPsec to protect the traffic between two Solaris hosts. In this case, data confidentiality between the two hosts is not of concern however the integrity of the data is.
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Configuring IPsec/IKE on Solaris Part 3
During the lab work for this article an annoying bug was discovered in the Solaris IPsec utilities. The configuration of ESP in the ipseckey utility is not possible in the default installation of Solaris.
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FOCUS on Linux: IPSec Fundamentals and Installation
As the Internet grows, more and more emphasis is being placed on security. One especially hot topic in security these days is IPSec and IPv6. This article is going to explain what IP Security (IPSec) is, what it is good for, why should you use it and, finally, provide and example of how to deploy it on Linux.
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Linux IPsec Gateways Using FreeS/Wan
Open source projects are now refined enough that they provide us with the most configurable and reliable solutions of a vast array of refined products. Recently I was told to implement a VPN solution for my company and keep costs down. Since my company is one of the 'survivors' of the dot-com world, this definitely means no highly expensive commercial products (those of us left have a budget.)
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Cisco IPSec Overview
IPSec provides IP network-layer encryption. The standards define several new packet formats: the authentication header (AH) to provide data integrity and the encapsulating security payload (ESP) to provide confidentiality and data integrity. Key management and security associations, the IPSec parameters between two devices, are negotiated with the Internet Key Exchange (IKE, formerly known as the Internet Security Association Key Management Protocol or ISAKMP/Oakley). IKE can use digital certificates for device authentication to enable the creation of large encryption networks. Without digital certificate support, IPSec solutions will not scale to the Internet. Cisco now offers IPSec in both the Cisco IOS software and the PIX Firewall. Cisco is also working with industry partners to ensure that IPSec is available on a wide range of systems, including Windows NT, Windows 95, and UNIX.
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IPsec
Secure IP, or IPsec is a standard that provides authentication, verification, and encryption at the IP networking layer. This powerful technology has many uses, including virtual private networks(VPNs) which stretch across global networks. This paper will discuss the protocols and standards which apply to IPsec. It will present sample scenarios that utilize IP sec.
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IPSec Tunnel Creation
There are many types of VPNs (Virtual Private Networks) available for use in today's networks. One of these types involves use of the IPSec standard. Within IPSec, there are further options on ways to define your VPN. The actual building or construction of the IPSec VPN is very involved. The purpose of this paper is to detail, explain, and illustrate the specific processes that occur in creating an IPSec VPN tunnel. Some of the concepts and theory will also be explained. Like other VPNs, an IPSec tunnel is secure. It is encrypted using cryptographic techniques. I will be using the example of what one vendor refers to as a site-to-site VPN (How 2). These are not the same processes that occur with a host-to-host or host-to-gateway VPN, although they are similar. There are many attacks that come with IPSec and many that are avoided. I will cover a few of them, when relevant, but not all.
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Remote Access IPSec VPNs: Pros and Cons of 2 Common Clients
The needs for remote access in today's enterprise networks require a co-effective method for securely connecting to company resources via the Internet. IPSec is one of the best methods of creating an encrypted, authenticated tunnel to these resources, but at the same time, the current IPSec standards do not specify a method of providing clients an internal IP configuration nor a method for authenticating more than the computer that the user is currently using for the connection. This paper discusses two client options for creating this encrypted and authenticated connection, as well as options for working around the deficiencies of the current IPSec standard by combining IPSec with L2TP or by using proprietary functions to accomplish the same. Other proprietary features are discussed in this paper, such as IPSec NAT traversal , client firewall inclusion, and user authentication via the ISAKMP tunnel.
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