A Network Computing Online Article

CISCO's Layer Two Forwarding protocol

This document discusses key concepts related to Virtual Private Networks

An overview of virtual private networks and some of the key technologies that permit private networking over public internetworks.

A collection of VPN whitepapers for remote access, including Windows 2000, SmartGate, WebRamp, and others.

A collection of VPN whitepapers covering much ground from general issues to specific ones like 802.11b

We are a VPN services company that offers point-and-click VPN services. Here is a list of our VPN white papers.

This howto describes the step to take when setting up a Linux based VPN.

This document gives you the background and show the steps for implementing an L2TP/IPsec based VPN using Linux, Windows and MacOSX

This document gives you the details how to setup a virtual private network between Linux/Openswan on one side and Microsoft Windows 2000 and XP on the other side.

An article discusses the types of VPN available, benefits, and considerations necessary when deploying SSL VPNs.

This site gives valuable information about the Checkpoint VPN-1 product and its interoperability with other VPN implementations.

This site offers a german book (pdf) covering Linux VPNs for download.

This howto describes the setup of a simple VPN using ssh and ppp.

This document explains how to deploy a VPN using OpenVPN and OpenSSL.

This howto describes the setup of the IPsec alternative OpenVPN, which is available for Win32, MacOS X and Unix-based Operating Systems.

This tutorial covers the setup of a HA-VPN using FreeSWAN or Openswan and the Zebra routing daemon.

This document covers the steps and pitfalls connecting a CheckPoint NG FW-1 to a FreeSWAN Linux-Box using preshared keys and X.509 certificates.

Creating an interoperable VPN using the free FreeSWAN/Openswan and a Cisco PIX 501.

This tutorial describes an IPsec/L2TP setup using Racoon and l2tpd.

Bruce Schneier Analysis of the Microsoft PPTP implementation. Why is PPTP bad.

Point-to-Point-Tunneling Protocol (PPTP) is a networking technology that supports multiprotocol virtual private networks (VPN).

Replacing a Windows PPTP server with Linux PopTop.

This Howto describes the steps to setup a Linux PopTop PPTP Server using MSCHAPv2. For Authentication either Radius or an Active Directory Domain controller may be used.