Best techniques to secure Linux OS laptop
Linux belongs to the Unix family, which creates similar operating systems. The Linux kernel unites them. Unix-like operating systems are open-source operating systems that Unix influenced. People use Linux in their home and work computers, laptops, web servers, workstations. Moreover, people use Linux in government agencies. For example, the Brazilian federal government actively supports Linux. So you should know how to protect the Linux operation system.
Surely, you worry about why Linux is more secure and used by ordinary people, state institutions. Linux security is based mainly on the fact that such systems are not widely used. Of course, there are viruses under Linux too, but there are so few of them. Also, the Linux file system is securely password protected. Only a user with superuser or root privileges can perform any actions to change system files. The plus to the security of Linux is that it is impossible to run Windows applications in it without an emulator.
Linux server security is essential to keep your data and your time safe from the hands of hackers. Dozens of vulnerabilities are found by experts every day. Therefore, you can find the vulnerability in UNIX systems. Below we have prepared seven ways how to secure a Linux OS laptop. Please read them carefully and apply.
Update the Linux operating system
Despite the simplicity of this point, it is from this step you can create a secure Linux operating system begins. In software, experts are constantly finding and fixing various vulnerabilities. If you want your server to be safe, keep all software up to date. Make it a rule to update your system from time to time.
Don’t use insecure services
Clever hackers can intercept passwords from Telnet, FTP, RSH commands, personal user data, and usernames. To do this, they need to use the tools that are publicly available on the Internet. To get rid of this problem permanently, you can use OpenSSH, SFTP, or SFTP. These programs add SSL or TLS to regular FTP, and your data is securely protected. You can use ssh to connect to the server remotely and either SSH or SFTP to transfer files.
Use VPN for Linux to protect Linux operation system
To provide more anonymity on the Internet, you can use VPN apps. VeePN is one of the best and most widely used VPNs today. VPN on Linux allows you to connect multiple devices at once and offers an acceptable network speed. VPN is entirely secure. The company uses OpenVPN with 256-bit AES VeePN VPN encryption. You can connect using OpenVPN, SSH, or SSL and forward traffic through several alternate ports. The service offers a free version; with which you can test all the functions of the tool. Using a VPN is very easy: register on the site, download the program and connect to high-speed servers. VeePN finds the most harmful websites and warns you about the danger. If you are concerned about online security, VPN will secure Linux OS laptop from cyber fraudsters.
Use SELinux or Apparmor to secure Linux OS laptop
For users of the Linux operating system, the company provides a set of security programs that you can use to protect against viruses, intrusions, cyber fraudsters, and misconfigurations. However, please use systems that control access to applications. SELinux or AppArmor does a great job with this function.
SELinux is a system that provides you with different security policies that tweak the Linux kernel. This tool allows you to control your access to various documents on the file system. SELinux can provide several times better security for the Linux operating system. After configuring this tool, the program will consider root as a normal user.
People use the AppArmor system on Ubuntu, and it works similarly to SELinux. Here, you can create profiles for each application to specify what the program can access and denied access.
Get care about user accounts
Do not use the root user to administer the server. Use simple useradd and usermod commands, and you can create a non-root user that will not have access to system administration. However, make sure you create a strong password before doing these. The password must be at least eight characters long. Distribute these characters in upper and lower case. Also, don’t forget to add special characters and numbers. For example, write eight characters, including three uppercase letters, three lowercase letters, and two symbols or numbers. You can also use various services to generate passwords, it will secure Linux OS laptop.
Divide disk into partitions
If you divide your hard drive into multiple partitions, you will significantly increase the Linux operating system’s security level depending on the file type. We recommend creating a separate section for these directories:
● usr;
● home;
● var;
● var/tmp;
● tmp.
We also recommend creating sections for Apache and FTP servers. To do this, you need to open the /etc/fstab file and configure the following parameters:
● noexec – Do not execute any programs or executable files on this section. Only scripts are allowed;
● nodev – Do not allow symbolic or special devices on this section;
● nosuid – Do not allow SUID / SGID access for programs from this section.
Configure logging and auditing
You can save all the strange, unsuccessful attempts to enter the system, which indicate that scammers tried to hack you. To do this, you need to set up logging and auditing, which will collect this information. Such logs are most often found in the /var/log folder.
To view the information in the log, use the logwatch or logcheck utilities. Such utilities greatly simplify the reading of logs. You can study not all documents, for example, only files for a certain period, and send the report to your email address.
You can monitor the system at any time. The program saves to disk all information about the audit events you are interested in. You can customize the audit using the /etc/audit.rules file. At system startup, the tool adheres to all the rules specified in the file. Opening the file, you can set the parameters you need or apply one separate utility – auditctl.
Conclusion
Linux is considered more reliable than Windows. Many people think that other operating systems are more susceptible to hacker attacks than Linux. However, Linux also has many vulnerabilities, and you must learn how to prevent hacking attempts.
In this article, we’ve covered the very best ways to keep Linux secure. However, there are still many different ways for popular tools that need to be hardened. Do not forget to set complex passwords, update the OS from time to time, install VPN for Linux and use all the secrets we told you about.