Firewalls


Malware. An odd sounding word created to lump all malicious software programs, including viruses, worms, trojans, spyware, adware, and other malevolent codes into one cause-your-computer-serious-hurt category.

In 2005, Computer Economics released a report on malware. The good news was that for the first time since 2002, the total worldwide financial losses from malware actually declined to a mere $14.2 billion. The bad news was that the nature of malware was changing from overt threats to more focused, covert attacks. This definitely is not great news for the average computer user just trying to keep up with the hundreds of malware programs that bombard us daily.

It’s not an easy task keeping malware out of your computer system. In order to accomplish this, you need a strong antivirus program. One such program that can deliver the goods is ZoneAlarm Internet Security Suite 6 from Zone Labs. Zone Labs is one of the most trusted brands in Internet Security for good reason. Their product, simply put, kicks serious malware gluteus maximus.

ZoneAlarm has received more review recommendations that any other Internet-security software suite because of its superb firewall and antivirus protection. It blocks pop-up ads, protects against identify theft and provides adequate spam filters that are flexible. It even beats the market leader, Norton Internet Security, which is often criticized for excessive system drag.

Its newest version includes these additional features:

• Triple Defense Firewall to prevent spyware from sending your information across the Internet. It also makes your computer invisible to anyone on the Net.
• Smart Defense Advisor which can automatically adjust your security settings for maximum protection against the latest virus and spyware outbreaks.
• Advanced Identify and Privacy Protection to prevent your personal data from leaving your computer without your approval.

The bonus for the average user who cringes at the idea of setting-up one of these systems is that the interface is easier to understand and use in comparison to most if its competitors. If you choose to venture beyond the out-of-the-box default settings, and install a more elaborate filtering, know that this will require some additional time to set up on your part.

Overall, ZoneAlarm Internet Security Suite is a user-friendly, comprehensive security solution that will have your computer safe from Internet hazards and cyber criminals within minutes of installation.

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What are Intrusion Detection Systems?

Intrusion Detection System (IDS) are a necessary part of any strategy for enterprise security. What are Intrusion Detection systems? CERIAS, The Center for Education and Research in Information Assurance and Security, defines it this way:

“The purpose of an intrusion detection system (or IDS) is to detect unauthorized access or misuse of a computer system. Intrusion detection systems are kind of like burglar alarms for computers. They sound alarms and sometimes even take corrective action when an intruder or abuser is detected. Many different intrusion detection systems have been developed but the detection schemes generally fall into one of two categories, anomaly detection or misuse detection. Anomaly detectors look for behavior that deviates from normal system use. Misuse detectors look for behavior that matches a known attack scenario. A great deal of time and effort has been invested in intrusion detection, and this list provides links to many sites that discuss some of these efforts”(http://www.cerias.purdue.edu/about/history/coast_resources/intrusion_detection/)

There is a sub-category of intrusion detection systems called network intrusion detection systems (NIDS). These systems monitors packets on the network wire and looks for suspicious activity. Network intrusion detection systems can monitor many computers at a time over a network, while other intrusion detection systems may monitor only one.

Who is breaking into your system?

One common misconception of software hackers is that it is usually people outside your network who break into your systems and cause mayhem. The reality, especially for corporate workers, is that insiders can and usually do cause the majority of security breaches. Insiders often impersonate people with more privileges then themselves to gain access to sensitive information.

How do intruders break into your system?

The simplest and easiest way to break in is to let someone have physical access to a system. Despite the best of efforts, it is often impossible to stop someone once they have physical access to a machine. Also, if someone has an account on a system already, at a low permission level, another way to break in is to use tricks of the trade to be granted higher-level privileges through holes in your system. Finally, there are many ways to gain access to systems even if one is working remotely. Remote intrusion techniques have become harder and more complex to fight.

How does one stop intrusions?

There are several Freeware/shareware Intrusion Detection Systems as well as commercial intrusion detection systems.

Open Source Intrusion Detection Systems

Below are a few of the open source intrusion detection systems:

AIDE (http://sourceforge.net/projects/aide) Self-described as “AIDE (Advanced Intrusion Detection Environment) is a free replacement for Tripwire. It does the same things as the semi-free Tripwire and more. There are other free replacements available so why build a new one? All the other replacements do not achieve the level of Tripwire. And I wanted a program that would exceed the limitations of Tripwire.”

File System Saint (http://sourceforge.net/projects/fss) - Self-described as, “File System Saint is a lightweight host-based intrusion detection system with primary focus on speed and ease of use.”

Snort (www.snort.org) Self-described as “Snort® is an open source network intrusion prevention and detection system utilizing a rule-driven language, which combines the benefits of signature, protocol and anomaly based inspection methods. With millions of downloads to date, Snort is the most widely deployed intrusion detection and prevention technology worldwide and has become the de facto standard for the industry.”

Commercial Intrusion Detection Systems

If you are looking for Commercial Intrusion Detection Systems, here are a few of these as well:

Tripwire
http://www.tripwire.com

Touch Technology Inc (POLYCENTER Security Intrusion Detector)
Http://www.ttinet.com

Internet Security Systems (Real Secure Server Sensor)
http://www.iss.net

eEye Digital Security (SecureIIS Web Server Protection)
http://www.eeye.com

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