vpn

Tutorial on how to set up dual layer authentication with OpenVPN. Dual layer meaning standard TLS key based authentication couple with user/pass authentication using pam plugin

SSL-based VPNs were designed to eliminate the need for complex configurations on the user's PC. Unfortunately, that was before the dangers of public WiFi networks and tougher regulatory requirements came into being. Thanks to WiFi, many attacks that were difficult are now quite simple. In particular, a man-in-the-middle attack can intercept SSL-encrypted traffic, rendering SSL-based VPNs useless - even if it is protected by a typical one-time password system. The man-in-the-middle can easily feed the one-time password into the SSL-based VPN within the alloted time.

This tutorial will guide you through the installation and configuration of Lintrack, a GNU/Linux distribution specialized in networking tasks. We will give two LANs access to the internet along with DHCP and DNS cache servers, and then we will connect our networks using OpenVPN in bridging mode. You should be running all these in well under an hour, thanks to the unified configuration interface of Lintrack.

This tutorial shows how to set up a Ubuntu 6.10 server (Edgy Eft) as a firewall and gateway for small/medium networks. The article covers the installation/configuration of services such as Shorewall, NAT, caching nameserver, DHCP server, VPN server, Webmin, Munin, Apache, Squirrelmail, Postfix, Courier IMAP and POP3, SpamAssassin, ClamAV, and many more.

Racoon Roadwarrior is a client that uses unknown, dynamically assigned IP addresses to connect to a VPN gateway (in this case also firewall). This is one of the most interesting and today most needed scenarios in business environment. This tutorial shows how to configure Racoon Roadwarrior.

You can do things between computers on your local network you can’t from out on the internet, such as accessing files in shared folders, or listening to your MP3 collection. By using the free virtual private network application Hamachi, you can access your computer from anywhere on the internet as if you were home on your local network, and here’s how.

This how-to is for installing and configuring OpenVPN on a Gentoo server acting as a firewall/router. I'll also discuss configuring a OpenVPN client on Windows XP. Here is a brief description of what OpenVPN is from their site:

OpenVPN is a full-featured SSL VPN solution which can accomodate a wide range of configurations, including remote access, site-to-site VPNs, WiFi security, and enterprise-scale remote access solutions with load balancing, failover, and fine-grained access-controls