Automatic binary updates for OpenBSD

One of the things i always thought holding OpenBSD back from attracting a larger user base is its lack of a simple way to upgrade the system – i am talking binary updates or moving to a new release. Learn about bluesnapper on his blog, a tool that helps with binary updates on OpenBSD, written by Ted Unangst.

I have no idea how i did not know about this tool or effort; i see so many people asking binary upgrades that i think there is a pretty big demand and truly hope this gets developed further. Reading the linked article above leaves me a little uncertain as to what the future is for that project. Anyways – now I’m off to learn more about bluesnapper so that in the next article i can outline using it step by step and what kind of issues where there on the way.

Building a captive portal with OpenBSD

There aren’t (m)any lightweight captive portal solutions out there for us, except a few clumsy heavy or badly maintained projects together with heir professional counterparts in routers better than home-grade. Captive portals are cool and useful, read on how to build one, including video demo.

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A wireless trap using OpenBSD – reloaded

Build a OpenBSD wireless access point that redirects any client request for any website to a website of your own design. With a little imagination you could adapt this technique for more nefarious purposes – but that is not something we endorse here. Something more applicable to our kind may be to use this technique to do basic DNS based filtering, ad-blocking or something along those lines.

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A wireless access point / Hotspot using OpenBSD

OpenBSD wireless Hotspot

This Guide explains how you would setup a wireless hotspot using OpenBSD and PF so you can provide internet access to wireless clients such as laptops or phones.

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Fail2ban with PF on OpenBSD 5.2

This explains how to quickly setup the amazing fail2ban, which monitors your log files for activity you specify and performs certain actions once a threshold is reached. Simplest case: Monitor authlog for failed ssh login attempts, and ban the originating IP after a few tries.

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Appletalk / Netatalk

General Information

This short how-to gives you the instructions to install and configure an OpenBSD machine as a fileserver for Apple’s Macintosh Computers.

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Installing Squid

General Information

A quick guide to get a squid Proxy Server running under OpenBSD.

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Configuring IPSec VPN Connection Between FreeBSD and OpenBSD

General Information

Although there are some good tutorials on setting VPN connections using IPSec in FreeBSD-to-FreeBSD or OpenBSD-to-OpenBSD configurations, only tutorials on setting FreeBSD-to-OpenBSD IPSec tunnels are at least partly outdated, mostly due to changes introduced in OpenBSD 3.8.

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Pimp My OpenBSD bootfloppy

General Information

This short how-to gives you some basic hints on how to customize the OpenBSD bootfloppy, and how to setup an easy accessible shellscript.

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Installing Applications OpenBSD

General Information

Maybe you are switching to OpenBSD from Linux or Windows. Or maybe you are familiar with FreeBSD and its ports and packages systems. Either way, you may be wondering how to install applications on this secure OS. Like FreeBSD, most applications can be installed from the Internet. There are two different installation methods to choose from and they both deal with dependancies.

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