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7 Disadvantages and Risk of Cloud Computing

Cloud computing is a term for storing and accessing data over the Internet. No data is stored on the computer’s hard drive of your personal computer. You can access data from a remote server in cloud computing. Here, are significant challenges.

1. Performance may vary

If you work in a cloud environment, the software runs on the network which provides other companies resources at the same time. Any greedy behavior attack on your tenant could affect your shared resource efficiency.

2. Technical problems

It is always prone to failure or other technical problems. Even the best cloud providers can face these kinds of problems despite maintaining high maintenance standards.

3. Data security threat in cloud computing

Another downside of working with cloud computing is the threat of security. Once you accept this technology, you should be well aware that you will share all the sensitive information about your business with a third-party cloud computing service provider. This information could be accessed by hackers.

4. Download

When dealing with cloud computing, downtime should also be remembered. This is because your cloud provider can face the loss of power, poor internet connectivity, maintenance of service, etc.

5. Internet Connectivity

Good Internet connectivity is a must. Without an internet connection, you can’t access the cloud. In fact, you don’t have any other way to collect cloud data.

6. Lower Bandwidth

Most providers of cloud storage services restrict the use of their user’s bandwidth. So, if your organization exceeds the allowance given, the additional charges could be substantially expensive.

7. Lacks of Support

Companies fail to provide adequate customer support. They also want to rely on FAQs or online help from their users, which can be a complex job for non-technical people.

Conclusion

We can not overlook the fact that the fastest-growing part of network-based computing is cloud computing. It gives customers of all sizes a huge advantage: simple users, developers, businesses and all types of organizations.

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Best Internet Security Tips For Your Server

Best internet security tips that help you to protect your server. One of the first things you should do when running a virtual private server is to make your server as secure as possible. This way you will protect your server from various security attacks that can damage or even destroy your data.

Here are a few best security tips on how to improve the stability and security of your Virtual Private Server:

1. Update Your Software

Updating the software is one of the most important and best Internet security tips to secure your server. Every day there are many vulnerabilities in various Linux applications, services and scripts, and new permanent versions are released very quickly. Installing updates on the server is important and strongly recommended. You can keep your server up to date using your distribution’s package manager, such as “yum” or “apt-get”.

RPM based distros:
# yum update

Debian based distros
# apt-get update && apt-get upgrade

2. Use Strong Passwords

The second best internet security tip is always used as a strong password. Passwords are the best front line defense for your server. A strong password consists of a combination of letters (both upper and lower case), numbers and special characters and it should be at least 8 characters long.

When setting up new accounts on the virtual server, create strong passwords. The stronger the password, the less likely it is to guess and your server will be taken over. Never use easy-to-guess passwords, such as names based on names, addresses, words from the dictionary, important dates, etc. A strong password consists of a combination of letters (both uppercase and lowercase), numbers and special characters, and should be at least 8 characters long.

3. Use Correct File and Directory Permissions

Three types of access rights: read, write and execute are available for three different categories of users: owner, group and others. With these permissions, you can specify who can access or modify files. This is the best internet security tip that makes them very important for the security of your server. Make sure that all files and directories have the correct permissions. You can check the file permissions by running the “ls -l” command. The first line of the output shows file / directory permissions: “r” = read permission; “W” = permission to write; “X” = execute the authorization; “-” means no permission. You can change the permissions using the “chmod” command.

The following commands can help you find any world writable files and directories, which can be a security risk:

To find world writable files type:
# find / -type f -perm -o+w -exec ls -l {} \;

To find world writable directories type:
# find / -type d -perm -o+w -exec ls -ld {} \;

4. Stop / Disable Unneeded Services

All Linux distributions usually have many services configured that will run each time the server is started. The more services running on the server, the more ports are open to potential external intrusion. Disabling unneeded services can improve server security and even overall server performance.

5. Disable ‘root’ login via SSH

The “root” account has full control over the entire server, so allowing SSH to log in directly as “root” is one of the biggest security threats. Hackers can brutally force the server’s “root” password, and when they succeed, they will gain full control over the entire server. Even so, even one small mistake made when logging in as “root” can cause a big problem on the server. It is strongly recommended that you use “root” only when it is really necessary.

6. Delete Inactive Accounts

User accounts that are not used for a long time pose a potential threat to server security. Because no one uses them, they can be broken and used to damage the server or other servers on the network.

To remove a user account from the Linux command line, do the following:
# userdel <username>

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