Category: Network Security

I have read an excellent article today from “Perimeter e-security” which lists the top 9 security threats of the IT industry for 2009 and how to mitigate them. Perimeter is a Milford, CT company offering complete security on demand services, starting from the user’s CPE and continuing into network security. I thought it would be [...]

There is a lot happening in the information security world. 2008 appears to be a newsworthy year in these regards. Below are some matters to keep an eye on for 2008, some of them are good and, unfortunately, some aren’t.

We have all encountered terms like virus, warms, spyware etc many many times in the internet “jungle” without actually distinguishing between them. In this post I will try to define and compare all these malware threats that flow around the computer and internet worlds. Virus: A virus is a malware program that is loaded on [...]

By conventional definition, a firewall is a partition made of fireproof material designed to prevent the spread of fire from one part of a building to another. It can be used to isolate one compartment from another. When applying the term firewall to a computer network (or to a Local Area Network – LAN), a [...]

This security approach is based on the concept of building several layers of defense around the host or information resource that you want to protect against malicious attacks. In enterprise IT networks, the defense in depth approach is implemented using different security infrastructure equipment and mechanisms. These include hardware firewalls, Intrusion Prevention Systems, Authentication and [...]

In a normal IP communication between two hosts, the sending host inserts its configured IP address in the ‘source IP’ field of the IP header, in order for the receiving host to know where to send the reply traffic back. In IP Spoofing, a malicious host can forge the IP header and change the source [...]