Sun’s recently released VirtualBox 2 is one of the best virtualization applications for desktop users. It’s available in two wallet-friendly flavors, with a few extra features in the closed-source variant. The software sports a nice graphical user interface, but few users realize that it can also be completely controlled via a powerful command-line interface.
The CLI works well for users who want to control a VirtualBox running on a headless server with no monitor or keyboard attached. Even desktop users, running and managing VirtualBox from the same machine, can pull a …

Multiple DNS implementations vulnerable to cache poisoning

Overview
Deficiencies in the DNS protocol and common DNS implementations facilitate DNS cache poisoning attacks.
I. Description
The Domain Name System (DNS) is responsible for translating host names to IP addresses (and vice versa) and is critical for the normal operation of internet-connected systems. DNS cache poisoning (sometimes referred to as cache pollution) is an attack technique that allows an attacker to introduce forged DNS information into the cache of a caching nameserver. DNS cache poisoning is not a new concept; in fact, there are published …

The DNS server at IP address 202.188.0.132 is susceptible to a DNS cache poisoning attack. The server is not changing its source port, query id, or both, between queries. This means it is easier than average for an attacker to spoof responses to DNS queries from this server, causing the server to serve a potentially malicious DNS record in response to any query.
Click here for more details on this vulnerability and how to patch it.
If you are not in control of your own DNS server, contact your DNS provider but …

Traditional Open-Xchange Offering Now Packs Same User Interface and Architecture as Popular Hosted Edition
TARRYTOWN, N.Y., July 1, 2008 – Open-Xchange Inc., the leading provider of open source groupware, today announced a preview to the new version of Open-Xchange Server Edition, which facilitates effective teamwork and enables document sharing anywhere, anytime, with any device.

Open-Xchange offers email, calendar, contacts, tasks and document sharing to provide companies with all the tools needed to facilitate communication and efficient teamwork. Customers can improve communication and teamwork with simple, intuitive tools and intelligent features, such as …

Purplenova is a leader in providing innovative solutions for secure desktop content hosting. Traditional Web Servers are difficult (and sometimes impossible) to set up on home and office PCs. Secondly, commonly used techniques for making desktop content web-accessible, such as VPNs or Web-conferencing solutions do not lend themselves to Web 2.0 environments, where a simple mechanism to publish desktop content is required. Our patent pending technology provides a solution to both these problems by making it possible to securely and easily web-publish content directly from your PC.
With the Purplenova …

 
When people hear or read the word “proxy” their minds start to wander and the look on their faces change, may consider such words to be too geeky to enter the common language, the fact is that the word is not self explanatory that’s why it is necessary to explain the meaning and functions of such systems, you will soon learn that they are very handy.
As shown by the online etymology dictionary the word proxy comes from the term prokecye, which means “agency of one who acts instead of …

High availability is a system design protocol and associated implementation that ensures a certain absolute degree of operational continuity during a given measurement period.
Availability refers to the ability of the user community to access the system, whether to submit new work, update or alter existing work, or collect the results of previous work. If a user cannot access the system, it is said to be unavailable. Generally, the term downtime is used to refer to periods when a system is unavailable.
Planned and unplanned downtime
A distinction needs to be made between …

There is a lot of buzz going around about Virtualization. What is Virtualization, and what benefits does it provide? In this article we will take a look at the technology to see how it can provide a great deal of flexibility and cost effectiveness for IT professionals and software developers.
Virtualization technology allows multiple virtual machines to run on a single host computer. These virtual machines can run different operating systems, such as Windows, Linux and UNIX. Each virtual machine has its own set of virtual hardware resources (e.g., CPU, RAM, …

Xserve is the name of Apple Computer’s Macintosh 1U rackmount line of server computers.
While Apple’s first foray into the server market in 1997 was a spectacular failure by way of Network Servers that ran AIX 4, the introduction of OS X in 2000 and the later rollout of the G5 PowerPC processor from IBM present strong arguments for its adoption now.
Not known for being a server-side company, Apple representatives confirmed that the company took its efforts to penetrate the enterprise market very seriously and spoke to hundreds of companies during …

Load balancing is the even distribution of computer processing and communication activities so that a server is not overwhelmed. Load balancing is especially important for networks where it is difficult to predict the number of requests that will be issued to a server.
Busy Web sites typically employ two or more Web servers in a load-balancing scheme. If one server starts to get swamped, requests are forwarded to another server with more capacity. Load balancing is therefore a service that is employed on more sophisticated site deployments.
Most service providers that offer …