HowtoForge provides user-friendly Linux tutorials.

  • Introducing Remo - An Easy Way to Secure an Insecure Online Application with ModSecurity

    Author: dune73Tags: , Comments: 2

    Introducing Remo - An Easy Way to Secure an Insecure Online Application with ModSecurity Say you have a nasty application on your Apache webserver that has been installed by some jerks from the marketing department and you can neither remove nor patch it. Maybe it is a time problem, a lack of know-how, a lack of source-code, or possibly even political reasons. Consequently you need to protect it without touching it. There is ModSecurity, but they say this is only for experts. A straightforward alternative is Remo, a graphical rule editor for ModSecurity that comes with a whitelist approach. It has all you need to lock down the application.

  • How To Block Spam Before It Enters The Server (Postfix)

    Author: Falko TimmeTags: , Comments: 14

    How To Block Spam Before It Enters The Server (Postfix) The last few weeks have seen a dramatic increase in spam (once again). Estimates say that spam makes now up for 80 - 90% of all emails, and many mail servers have difficulties in managing the additional load caused by the latest spam, and spam filters such as SpamAssassin do not recognize large parts of that spam as they did before. Fortunately, we can block a big amount of that spam at the MTA level, for example by using blacklists, running tests on the sender and recipient domains, etc. An additional benefit of doing this is that it lowers the load on the mail servers because the (resource-hungry) spamfilters have to look at less emails.

  • Virtual Users And Domains With Postfix, Courier And MySQL (Debian Etch)

    debian Author: Falko TimmeTags: , , Comments: 21

    Virtual Users And Domains With Postfix, Courier And MySQL (Debian Etch)This document describes how to install a mail server based on Postfix that is based on virtual users and domains, i.e. users and domains that are in a MySQL database. I'll also demonstrate the installation and configuration of Courier (Courier-POP3, Courier-IMAP), so that Courier can authenticate against the same MySQL database Postfix uses.

  • Create Users And Change Passwords With A Bash Script

    Author: fakrulTags: Comments: 26

    Create Users And Change Passwords With A Bash Script These two scripts are very important for the system admin who regularly works with mail servers and somehow forgets to backup his system username and password! Let’s say somehow we lost the usernames and passwords of the mail server. In this case the admin has to manually create all the users and then change the passwords for all the users. Tedious job. Let’s make our life easier.

  • The Perfect Desktop - Fedora 7

    fedora Author: Falko TimmeTags: , Comments: 6

    The Perfect Desktop - Fedora 7 This tutorial shows how you can set up a Fedora 7 desktop that is a full-fledged replacement for a Windows desktop, i.e. that has all the software that people need to do the things they do on their Windows desktops. The advantages are clear: you get a secure system without DRM restrictions that works even on old hardware, and the best thing is: all software comes free of charge.

  • Using Ruby On Rails With Apache2 On Debian Etch

    Author: Falko TimmeTags: , Comments: 7

    Using Ruby On Rails With Apache2 On Debian Etch This article shows how you can install Ruby on Rails (RoR) and integrate it in Apache2 on a Debian Etch system (including a short section at the end showing how to use RoR in a web site created with ISPConfig). Ruby on Rails is a web application framework which is rapidly gaining popularity among web programmers. It aims to increase the speed and ease with which database-driven web sites can be created and offers skeleton code frameworks (scaffolding) from the outset. Applications using the RoR framework are developed using the Model-View-Controller design pattern.

  • Secure Websites Using SSL And Certificates

    Author: punk0miTags: , , Comments: 8

    Secure Websites Using SSL And Certificates This how-to will guide you through the entire process of setting up a secure website using SSL and digital certificates. This guide assumes that you have already a fully functional (and configured) server running Apache, BIND, and OpenSSL. Just as a side note, this guide was written based on a Fedora Core 6 distribution, but should be the same for most other distros out there.

  • Virtual Users With Postfix, PostfixAdmin, Courier, Mailscanner, ClamAV On CentOS

    Author: thimTags: , , Comments: 5

    Virtual Users With Postfix, PostfixAdmin, Courier, Mailscanner, ClamAV On CentOS In this how to I will explain how to setup a Postfix virtual mailserver with Courier-IMAP, Maildrop and Postfix Admin GUI. We will secure our mailserver with Mailscanner and Clamav as anti-virus and Spamassassin as anti-spam.

  • How to secure VNC remote access with two-factor authentication

    Author: nowenTags: Comments: 1

    How to secure VNC remote access with two-factor authentication VNC is the most popular remote access solution today. However, it was developed to provide remote access, not to provide secure remote access. Administrators have to add security to VNC by tunneling it through an encrpyted channel such as SSH and adding a layer of authentication. In this article, we will show you how to combine the NoMachine NX server to encrpyt VNC and remote X session combined with two-factor authentication from WiKID Systems to create a secure, fast remote access solution.

  • Custom Boot Menu for Windows XP

    Author: apachedudeTags: Comments: 2

    Custom Boot Menu for Windows XP  One of the first things that I do upon receiving a new windows computer is create my own custom boot menu that shows up every time I boot my machine. This is especially handy when you suspect a virus; you can reboot into safe mode and scan for it.