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Why Use Xen?

By on May 9, 2013

For the business person, the answer is that Xen is a safe, stable, well-tested choice for virtualization which is used by industry giants (Amazon, Rackspace, Verizon, etc.). It has a robust consortium of companies behind its development and it has the price, performance, and security to go toe-to-toe with the best offerings in the industry. Plus, it has a proven 10-year track record which includes powering some of the largest clouds in the world.

For tech-savvy users of F/OSS, however, there are additional considerations.

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This entry is filed under Linux.

15 Command Line Tools to Monitor Linux Performance

By on May 9, 2013

It’s really very tough job for every System or Network administrator to monitor and debug Linux System Performance problems every day. After being a Linux Administrator for 5 years in IT industry, I came to know that how hard is to monitor and keep systems up and running. For this reason, we’ve compiled the list of Top 15 frequently used command line monitoring tools that might be useful for every Linux/Unix System Administrator.

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This entry is filed under Linux and tagged .

Too many admins spoil your security

By on May 9, 2013

We’ve all known for a long time that unnecessary use of elevated privileges is a bad thing. You shouldn’t be logged in as an administrator while surfing the Internet or checking your email; in particular, you shouldn’t do that stuff while logged onto a server as an admin. Your organization shouldn’t have too many enterprise admins, domain admins, or server admins. We all have that.

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This entry is filed under security and tagged .

How Does Big Data Impact the Network?

By on April 2, 2013

Traditionally, the way that network admins have solved capacity issues is with bandwidth. Surprisingly, though, only 21 percent of Cisco’s survey respondents indicated that they will need more bandwidth. 27 percent of respondents indicated that the coming network surge will require more security measure and improved IT policies.

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This entry is filed under cloud computing and tagged .

Free & Open Source Rootkit and Malware Detection Tools

By on March 29, 2013

A lot of sniffers, rootkits, botnets, backdoor shells and malwares are still on the wild today, which are used by malicious attackers after successfully pawning a certain server or any live network in order to maintain their access, elevate their access privilege, and spy other users in a network. In order to protect our network or server from such intrusions and further damage, there are free and open source detection tools that can be deployed and used as part of our security strategy. They are mandatory when our server or network is up and running, especially if a certain user is downloading a file which could possibly be malicious or harmful. The advantage of using free and open source detection tools is that you obviously don???t need to pay a single penny and that tutorials are very easy to get and understand because manuals are included which are usually named as README so be sure to RTFM (Read the F****** Manual). Here are some tools which could be of use to you guys

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This entry is filed under security and tagged .

75 Open Source Apps To Replace Popular Security Software

By on March 29, 2013

While no security software can provide complete protection from every cyberattack, the open source community has developed a variety of tools that home users, small businesses and enterprises can use to improve their security profile. Many of these open source projects are of a very high quality—in fact, many have won awards and some have been incorporated into commercial applications.

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This entry is filed under security and tagged .

What is the Network Control Point for Security?

By on March 29, 2013

In recent years, analyst firms and vendors have all jumped on the bandwagon using the terms Next Generation Firewall (NGFW) and Next Generation IPS (NGIPS). The key to both technologies is application visibility and the difference between the two technologies depends on which vendor you ask.

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This entry is filed under Networking, security and tagged .

Things that every IT person should know

By on March 26, 2013

No book or teacher can magically pour deductive problem-solving skills into your head. What works is lots of experience falling flat on your face — and lots of pounding your head on a desk until you solve a particularly intractable problem. I’ve learned the most from incidents during which I’ve broken something so thoroughly that I have absolutely no idea how to put it back together again. That’s a gauntlet no one wants to walk, but everyone does. The more painful the experience, the more likely you are to get wiser.

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This entry is filed under Linux, security and tagged .

Practicing safe DNS with Google

By on March 21, 2013

The Internet’s a dangerous place for an innocent Web browser to be searching alone for the right Web page, so the Domain Name System Security Extensions (DNSSEC) was created to make searching safer. That’s the good news. The bad news is that DNSSEC adoption has been lagging. Now, Google has announced that it’s supporting DNSSEC in its Google Public DNS service. The DNS is the master address list for the Internet. Thanks to it, you can simply type in a human-readable URL, such as my own Web site’s practical-tech.com, instead of writing out its IPv4 address “209.50.251.116.” That’s all well and good, but DNS doesn’t have any built-in way to make sure that the IP address information it’s feeding your browser is the real address.

Read this full article at ZDNet Blogs

This entry is filed under Linux, security and tagged .

Bash script self-updates from github

By on March 21, 2013

Building a private cloud solution for a customer, some scripts that we inject into cloud images quickly get out-dated by the time we actually wanna spin up instances. Why not create bash scripts that know how to get themselves updated from github (self modifying bash code?). I did just that

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This entry is filed under cloud computing, Linux and tagged .

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