Tarpits Using tarpits to trap spammersJul 11, 2008
A tarpit slows down spam by reducing the effectiveness of the spammer’s weapons.more »
Spam Test Comparing antispam appliances and servicesJul 11, 2008
Spam filters can help smooth the waves in your inbox, as long as they are reliable and don’t have too many side effects. We’ll show you what we found when we tested five antispam appliances and two service providers.more »
IMAP spam filter Intelligent filtering with Qmail, SpamAssassin, and MaildropJul 10, 2008
We’ll show you a custom solution for moving spam to a separate folder and adding new spam signatures to SpamAssassin.more »
Isof Looking for intruders with lsofJul 10, 2008
Track down and expose intruders with the versatile admin tool lsof.more »
Backdoors Techniques for building a hidden backdoorJul 09, 2008
Backdoors give attackers unrestricted access to a zombie system. If you plan to stop the bad guys from settling in, you’ll be interested in this analysis of the tools they might use for building a private entrance.more »
Charly's Column The sys admin’s daily grind: WebCalendarJun 20, 2008
Users log on to services such as SSH, ftp, SASL, POP3, IMAP, Apache htaccess, and many more using their names and passwords. These popular access mechanisms are a potential target for brute-force attacks. An attentive bouncer will keep dictionary attacks at bay.more »
Single-Packet Port Knocking Remote access security with single-packet port knockingJun 01, 2008
If you are looking for an extra layer of remote access security, try single-packet port knocking.more »
Access Control Lists Working with Access Control ListsJun 01, 2008
The ancient Linux permission system is often insufficient for complex production environments. Access Control Lists offer a flexible alternative.more »
Weird data transfer technique avoids all standard security measures.
FIDO alliance declares the beginning of the end for old-style login authentication.
The Linux New Media Awards have honored the most significant products, projects, people, and organizations for open source/Linux every year since 2000.
Legendary Uber-distro splits over the systemd controversy.
New LTS version offers many refinements for the Cinnamon and Mate desktops and significant improvement under the hood.
One of CeBIT’s most successful forums returns in 2015.
A new study says it is possible to unmask 81% of TOR users.
Redmond joins the revolution by turning the .NET Core Runtime into a GitHub project.
Users only had 7 hours to update before the intrusions started.
It's official: The new web arrives