Evilcoder.org

Waarom is dit document geschreven?

Ik heb een tijdje de mailing list van SPF gevolgd ,en vond het concept erg interessant. Net zoals overige ‘bekendere’ personages op internet heb ik redelijk last van spam. Een redelijk groot deel van mijn email is achteraf spam. Dit is een probleem dat alleen maar groter zal worden indien er niets tegen gedaan wordt. Vandaar dat ik dacht voor DSINet.org hier een artikel over te schrijven.  Het bevind zich nog in ontwikkel fase, maar zal hier ter preview worden aangeboden, waarbij critische lezers commentaar kunnen en mogen geven. Ik heb onlangs ook e.e.a aan discussies gelezen dat er concept fouten in SPF zitten. Helaas ben ik er nog niet achter waar dat precies op gebaseerd is. Voel je vrij om me hierover te informeren zodat ik dit documentje kan uitbreiden met die informatie.

SPF staat voor Sender Policy Framework. Dit houd in dat elke afzender vanaf het juiste domain moet komen. Zo is het mogelijk om een deel van de hedendaagse spam tegen te gaan.
Caller-ID gaat emailheaders na, om te kijken of bijvoorbeeld een email van PayPal inderdaad van PayPal komt.

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written by Remko

Why did we write this document?

On many many mailinglists that I am on, I read topics about machine’s that might be hacked, or in any other way not reliable anymore. People give advise, and although they do their best to help, it’s not always the best solution.

I had a SANS class (Incident Handling) which supports my opinion in how to act upon a potentially abused machine. The teacher there was Arrigo Triulzi, a great italian guy who is a IDS expert.

I will not retell their story, but if you wish to learn the information as best as I did then checkout this website. It will give you courses overview etc.

Now back to the original intention of this file; I want to create a clear and easy document which one could follow when a machine is not trusted anymore.

One more note: This document is mostly looking towards an unix environment. It might also be appliable for a Windows or other OS environments, but I am not sure. I don’t know enough about those to make correct assumptions for that. If you can do that, please contact me and I will update the documentation

Last updated: 28 December 2004 by Remko Lodder (added prevention section and added some more info in the company section)

Last change was triggered by: Leo (Thanks)

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written by Remko

Why did we write this paper?

Some collegues of mine asked me whether i can describe my current mail-server settings, so they could perhaps adopt it, and obtain the knowledge by using this. Also, i notice on some mailinglists from FreeBSD (And others) that there isn’t a allround paper describing how one can install a allround mailserver environment, doing spam scanning, virusscanning etc. We try to do that here. I cannot promise that it will end up in the near future, but every bit is a bit :). You are free to use this guide, change it etc, as long as you just mention that i wrote the original document ( a tiny little -3 sized line is ok, as long as it’s there :)). Also, you are free to translate it to your country language, as i will probably do for the Dutch people (and use it for the Project Mostly-Harmless (see their section on my site)).
We will start by using only FreeBSD information, OpenBSD information can be found here (Written by Dennis Cabooter, thanks for that!) and we will try to include some information if you build the stuff from source.

This document was last updated "Saturday 19 March 2005 by Remko Lodder". Some examples were updated. Example amavisd-new example was added. Corrected some grammar nits: Spotted by Josef El-Rayes.

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written by Remko

Yesterday my new book arrived, Hitchhikers guide to the galaxy. It is awesome, i am thinking of making some sort of quotes thingy from that book and implemen it on the site. It’s very humerous

If you love mr Bean , then you will love this book! It starts with an explaination about the author himself. There are all funny things in that part, which you have to understand before it’s funny. Also, if you like contradictions then this is definatly something for you. If you can’t stand that? Then don’t read it, it will confuse you.

If you are interested the ISBN nr is: 0517149257 and the EAN nr is: 9780517149256

written by Remko