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OpenBSD

OpenBSD encrypted raid disk

Post date: November 6, 2009, 10:11 Category: System Views: 4953 Comments
Tutorial quote: This document explain process to create encryped device with vnd driver stored on logical raid disk (Raid 1 - 0)
OpenBSD

Using ssh keys

Post date: December 13, 2007, 11:12 Category: Security Views: 5656 Comments
Tutorial quote: I discovered that I have quite a few ssh articles on my website, but none of them include how to simply setup SSH-keys. It's so simple and so convenient, lets have a closer look.
OpenBSD

OpenBSD 101 - Tutorial for Beginners

Post date: September 20, 2006, 20:09 Category: System Views: 10276 Comments
Tutorial quote: Some of the information in this tutorial can be found in the OpenBSD FAQ section. Though here the the FAQ has been trimmed down and presented in an easier to read format.
OpenBSD

Using OpenBSD

Post date: April 26, 2006, 14:04 Category: Miscellaneous Views: 8252 Comments
Tutorial quote: Many people responded to the call for OpenBSD and OpenSSH donations by purchasing an OpenBSD CD set. Those CDs are beginning to arrive in the mail, and when they do, how are you going to use them? If you're a software enthusiast who has never used OpenBSD before, you might enjoy installing it by yourself and figuring it out as you go. If, however, you're looking for a more practical approach to using OpenBSD as a desktop or server operating system, here's a guide to get you started.
OpenBSD

Apache - Serving up the Web

Post date: April 11, 2006, 22:04 Category: Network Views: 6981 Comments
Tutorial quote: The Apache Web Server is installed as part of the OpenBSD base system. This guide will help you configure the web server: (Apache 1.3.12 is released with OpenBSD 2.7 and 1.3.9 with OpenBSD 2.6)

To see how configurable the Apache/OpenBSD combination is we also look at allowing administrators to remotely review the server's status, we setup the system so we allow users on our system to have their own personal web-space. Of course, for the security counscious you probably want to turn some of these things off after you get things up and running.
OpenBSD

Hardening OpenBSD Internet Servers

Post date: April 11, 2006, 22:04 Category: Security Views: 9008 Comments
Tutorial quote: This tutorial on how-to harden or improve security on OpenBSD Internet servers includes sections that apply to any UNIX system. Hardening is making a computer more secure by removing unneeded functions, restricting access and tracking changes and processes. It was revised to cover OpenBSD 3.0 on Dec. 15, 2001 and includes an overview of the 2.9 to 3.0 changes. A new page on priorities ranks the value of the techniques presented here. Familiarity with UNIX system administration but not OpenBSD is assumed.
OpenBSD

Creating secure wireless access points with OpenBSD and OpenVPN

Post date: December 13, 2005, 18:12 Category: Network Views: 7610 Comments
Tutorial quote: You know how insecure 802.11x wireless networks are. In this article we'll create an OpenBSD-based secure wireless access point that prevents unauthorized access and encrypts every packet using a VPN tunnel. OpenBSD is one of the most secure operating systems available, is easy to use, and includes almost everything you need for this project in the base installation.
OpenBSD

Transparent proxying with squid and pf

Post date: May 17, 2005, 08:05 Category: Network Views: 11725 Comments
Tutorial quote: squid is a caching web proxy, it's set up between web browsers and servers, fetching documents from servers on behalf of browsers. It can accelerate web access by caching frequently requested pages and serving them from its cache. It can also be used to filter pop-up ads and malware or to enforce access control (which clients may request what pages based on different authentication methods).

Traditionally, the proxy is an optional component, and browsers are configured to actively use the proxy. Transparent proxying means forcing all web traffic through the proxy without the cooperation (or knowledge) of the clients. Once all browser connections pass through the proxy, outgoing connections to external hosts can be restricted to the proxy, and direct connections from local clients can be blocked.

The OpenBSD packet filter (pf) can be used to redirect connections based on various criteria, including source and destination addresses and ports. For instance, one can redirect all TCP connections with destination port 80 (HTTP) that arrive through an interface connected to local workstations to a squid proxy running on a different address and port.
OpenBSD

Quickly installing OpenBSD 3.3

Post date: May 1, 2005, 17:05 Category: Installing Views: 5466 Comments
Tutorial quote: This article goes through the steps of an OpenBSD 3.3 installation. The installer is a text-based interface and, in most cases, is quick and easy to complete.
OpenBSD

Failover Firewalls with OpenBSD and CARP

Post date: April 28, 2005, 02:04 Category: Network Views: 7353 Comments
Tutorial quote: Firewalls are a required component in commercial and residential computer networks. For many installations, the firewall is a single point of failure between client systems and external resources. It can also become a liability when hardware or applications fail, leaving potential customers unable to reach your servers. A properly designed and executed failover configuration for your primary firewall will address many of these concerns. This article introduces a proven method for installing redundant stateful firewalls using native OpenBSD features.
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