what is a VPS?

A VPS or virtual private server which works by partitioning a single physical server. The Physical node consists of only one root operating system. Using software such as Parallels Virtuozzo or VM-Ware the same operating system can then be installed over the top of the Hardware Nodes creating multiple Virtual Nodes. These Virtual Nodes use the same registry and system files to maximize efficiency and minimise both memory and hard disk usage. This all allows for independent execution of the virtual servers without interference from the other virtual servers connected to the same physical server.

Different Types of VPS Services

1.Managed VPS hosting service

In managed VPS hosting service the hosting company supply professionals who are well trained in solving numerous kind of hosting relevant specialised problems, able to administrate and handle issues quickly. They also guarantee that your world wide web functions are at safe hands and let you able to concentrate on the other important tasks at the same time. Managed VPS hosting service supply 24/7 service to help you regardless of the location where you are located and time boundary. Further, they guarantee that your server is working actively without any issues.

2.Unmanaged VPS hosting service

In Unmanaged hosting service the hosting company will not provide any support regarding the issues related with software , resource , performance , troubleshooting or need general help in understanding server applications. The user is completely responsible for the management and troubleshooting of the issues caused in the server. Only hardware related issues will be handled by the hosting provider.

Advantages of VPS over shared hosting

1.Security

In the case of VPS hosting your file system is not accessible or viewable by any other customer, your files are ensured full privacy and security.

2.Control

In the case of VPS hosting, you are able to modify server configuration files, install applications or modify system software With administrative or root access.

3.Isolation

In the case of VPS hosting, You are fully isolated from other users and actions on the server. No other customer can slow down or affect your service.

4.Performance

In the case of VPS hosting, Your resources may be guaranteed based on your plan, nothing else on the server will affect the performance of your VPS

Why Purchase VPS Hosting?

VPS hosting is a package that gives you a big part of server for a web project. Most online web companies provide VPS servers only to several companies, all located on one server. So the possibility of bad neighbourhood common for Shared Hosting is incredibly small in case of VPS. Along with server safety you get nice amount of disk space, serious bandwidth, control panel, and a dedicated support.

A VPS server is a good choice if your project is already quite big and in the foreseeable future your site will have to host big amounts of media. For instance, your users will upload audios, videos, images or other documents that take much disk space. All these documents will stay on your server, so you’ll need more gigabytes for it. Also, VPS hosting can process more users coming to your web page.

The prices for this hosting type are quite moderate, but we advise you to check the reliability of any company offering you cheap services. Low price can cover bad functioning, poor hosting features or unreliable customers support.

The above is a very rough outline on advantages of VPS hosting , if you have any questions, we would be happy to talk to you!

About the Author :

Karthikeyan.S works as a Software Engineer in Bobcares. He joined Bobcares in April 2012. He loves reading books and listening to music in his free time.

Blog edited by :

Appu Joseph Xavier works as a Software Engineer in Bobcares. He joined Bobcares in April 2012. He loves to watch movies in his free time.

Bobcares, the largest outsourced web hosting support & service provider, has rolled out their “Remote Infrastructure Management Services”.

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Days are gone when we needed a dedicated IP for each website with SSL!

With Server Name Indication(SNI) extension of the Transport Layer Security protocol, it is now possible to use authentic SSL certificates for sites hosted on shared IP addresses. If you are on a Linux hosted environment, you could very well reap the benefit of the feature right away. Read the rest of this entry »

Oh dear, you knew him, just that you think of him only when you are in trouble… He mends, he fixes, he gets things put straight all the while..

Oh God! You got it wrong, its not God! It’s “The System Administrator” Read the rest of this entry »

Last post on Identification of DDoS attack did not cover analysis of the attack, in cases wherein bandwidth graph’s and connection status aren’t conclusive. In such a scenario, the best means is to inspect the packets coming into the server, and this can be done by examining the packets using tools like tcpdump.

“tcpdump” is a popular sniffer command that does a good job. Using the switch “tcpdump -w”, one could write the output to a file, which could then be analyzed using tools like wireshark to get to the bottom of the attack. You could easily get the protocol in question, and also perform multiple filtration’s to the results. More on it could be read from here. Read the rest of this entry »

If you are a hosting provider, chances are that you’ve experienced a DoS/DDoS attack against a domain or a server. If so, you already know how frustrating it can be to tackle such an attack.

For those who are yet to feel the heat of it, its better to be prepared to identify an attack in real time. Many believe that the outcome of DoS/DDoS is disruption in service. Many a times, it does not fully disrupt the service, but the drop in quality of service leaves it in a state where it would be better if the the service isn’t rendered at all. After all, waiting 5 minutes for a web-page to load, isn’t worth it! Read the rest of this entry »

Communication is one of the most important paradigm on which a business stands. In today’s world, e-mail is still the fastest means of formal communication. Even though it has been around since mid 1960’s, never before has its glory reached the present stature. The importance of email, especially for people who conduct online business is unquestionable.

It is possible to host your own mail server using sendmail, qmail or exim, among host of other MTA’s. But - “Is there peace of mind?” What if the e-mail is delayed? What if the final confirmation mail of the very important deal, never reaches your inbox?

When so much depends on your e-mail service, you should depend on mail service providers who provide you with professional solutions such as Zimbra, Scalix and MS Exchange among others. On the other hand, you can purchase these solutions and implement them yourself. You would just need a server with network connectivity, to get started.

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Ever wondered if your website is hosted on a web-server that has a big hole right in the middle? If you haven’t, it is likely that some hacker is already thinking hard. The edge the hacker has is the tools that help him identify the unplugged holes in your webserver and web installation/scripts.

Believe me, web-server vulnerability and buggy CGI scripts are the favorite/common path taken by most intruders, who later end up harming your data, your reputation, and perhaps even your life. Simple port scanners and vulnerability scanners are employed to break into the server with ease, and Nikto is one such tool.

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Most of the Linux servers are today loaded with the EXT3 File System. We have come across a lot of incidents where files have gone lost through a simple rm -rf command, either done accidentally or sometimes even intentionally by others. There has always been a misconception that such files cannot be retrieved in ext3. In fact, it is quite possible to retrieve the data.

On further investigation into this, I was able to locate a lot of tools that could help recovering the deleted data from an ext3 file system. Magicrescue, Ext3grep, Testdisk, Ddrescue, Photorec and ext3undel are some examples, to list a few.

I was in pursuit of a tool that is capable of recovering all file types and is exclusively designed for the ext3 file system. One among the best tools that I found and would like to take you through is ext3grep.

This tool provides a good set of command line features and a good idea regarding the ext3 file system. Before proceeding further, let’s look into the merits and demerits of this tool.

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