Security

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Virus Protection With AVG Antivirus On Ubuntu Feisty Fawn

Virus Protection With AVG Antivirus On Ubuntu Feisty Fawn

This tutorial shows how you can install and use AVG Antivirus on an Ubuntu Feisty Fawn desktop. Although there aren't many Linux viruses out there, this can be useful if you often exchange files with Windows users - it can help you to not pass on any Windows viruses (that don't do any harm to Linux systems) to Windows users. AVG Antivirus for Linux is free for private and non-commercial use.

Chrooted SSH/SFTP Tutorial (Debian Etch)

Chrooted SSH/SFTP Tutorial (Debian Etch)

This tutorial describes two ways how to give users chrooted SSH access. With this setup, you can give your users shell access without having to fear that they can see your whole system. Your users will be jailed in a specific directory which they will not be able to break out of. The users will also be able to use SFTP in their chroot jails.

ASSP With Embedded ClamAV Integrated Into Postfix With Virtual Users And Domains

ASSP With Embedded ClamAV Integrated Into Postfix With Virtual Users And Domains

This document describes how to integrate ASSP (Anti-Spam SMTP Proxy) with embedded ClamAV into a mail server based on Postfix featuring virtual users and domains, i.e. users and domains that are in a MySQL database.

DSPAM WebUI with Virtual Users on Debian Sid

DSPAM WebUI with Virtual Users on Debian Sid

This howto is based on DSPAM With Embedded ClamAV Integrated Into Postfix With Virtual Users And Domains. To be able to use the DSPAM WebUI, and to let users take care of their own spam and train DSPAM themselves, you will have to install dspam-webfrontend.

DSPAM With Embedded ClamAV Integrated Into Postfix With Virtual Users And Domains

DSPAM With Embedded ClamAV Integrated Into Postfix With Virtual Users And Domains

This document describes how to integrate DSPAM with embedded ClamAV into a mail server based on Postfix featuring virtual users and domains, i.e. users and domains that are in a MySQL database. It rests upon parts of the howto Virtual Users And Domains With Postfix, Courier And MySQL (Debian Etch) from Falko Timme.

How To Harden PHP5 With Suhosin On OpenSuSE 10.2

How To Harden PHP5 With Suhosin On OpenSuSE 10.2

This tutorial shows how to harden PHP5 with Suhosin on an OpenSuSE 10.2 server. From the Suhosin project page: "Suhosin is an advanced protection system for PHP installations that was designed to protect servers and users from known and unknown flaws in PHP applications and the PHP core. Suhosin comes in two independent parts, that can be used separately or in combination. The first part is a small patch against the PHP core, that implements a few low-level protections against buffer overflows or format string vulnerabilities and the second part is a powerful PHP extension that implements all the other protections."

How To Harden PHP5 With Suhosin On CentOS 5.0

How To Harden PHP5 With Suhosin On CentOS 5.0

This tutorial shows how to harden PHP5 with Suhosin on a CentOS 5.0 server. From the Suhosin project page: "Suhosin is an advanced protection system for PHP installations that was designed to protect servers and users from known and unknown flaws in PHP applications and the PHP core. Suhosin comes in two independent parts, that can be used separately or in combination. The first part is a small patch against the PHP core, that implements a few low-level protections against bufferoverflows or format string vulnerabilities and the second part is a powerful PHP extension that implements all the other protections."

Email Classification (Incl. Spam Classification) With POPFile On Ubuntu Feisty Fawn

Email Classification (Incl. Spam Classification) With POPFile On Ubuntu Feisty Fawn

This article shows how you can install and use POPFile to classify incoming emails on an Ubuntu Feisty Fawn desktop. It is a POP3 proxy that fetches your mails from your mail server, classifies them and passes them on to your email client. Of course, POPFile must be trained to properly classify emails.

How To Harden PHP5 With Suhosin On Fedora 7

How To Harden PHP5 With Suhosin On Fedora 7

This tutorial shows how to harden PHP5 with Suhosin on a Fedora 7 server. From the Suhosin project page: "Suhosin is an advanced protection system for PHP installations that was designed to protect servers and users from known and unknown flaws in PHP applications and the PHP core. Suhosin comes in two independent parts, that can be used separately or in combination. The first part is a small patch against the PHP core, that implements a few low-level protections against bufferoverflows or format string vulnerabilities and the second part is a powerful PHP extension that implements all the other protections."

Filtering PDF-/XLS-/Image-Spam With ClamAV (And ISPConfig) On Debian/Ubuntu

Filtering PDF-/XLS-/Image-Spam With ClamAV (And ISPConfig) On Debian/Ubuntu

There is currently a lot of spam where the spam "information" is attached as .pdf or .xls files, sometime also hidden inside a .zip file. While these spam mails are not easy to catch with e.g. SpamAssassin or a Bayes filter, the ClamAV virus scanner can catch them easily when it is fed with the correct signatures as ClamAV is built to scan mail attachments.

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