10 Best Linux Vulnerability Scanners to Scan Linux Servers – 2023

Are you searching for Linux Vulnerability scanners that can recognize, characterize, and categorize to Scan Linux Servers, etc?

Regarding the security holes, this article can provide a solution to get the details about the most comprehensive Linux Vulnerability Scannerto scan Linux servers for malware and vulnerabilities.

Vulnerability is the detected part of any vulnerability assessment, which is the point that needs to be disclosed.

A few disclosures are executed by some individual teams, like the organization has to get discovered by Computer Emergency Readiness Team (CERT) or vulnerability.

These vulnerabilities are only the reason for malicious activities like cracking the system, website, and LANs.

Now you might be wondering what the vulnerability Scanner is.

Automated security auditing plays a vital part in your IT security by scanning your network.

Linux Vulnerability Scanner also the scanning of your website for several security risks. Scanners are also generated the prioritize the list of where you must patch, and they also must describe the vulnerability.

They also need to take a step to remediate them.

Here you will get the automated patching process by Scan Linux Servers with the essential tools.

Linux-based systems are considered to be impenetrable, and they also know to take risks seriously

. Many harmful programs like rootkits, ransomware, viruses, etc. can cause problems for Linux servers.

The operating system must be fully secure because of the server.

Many large brands and organizations have taken the responsibility to develop some tools that it does not detect malware and can make them capable of taking preventive actions.

There are many tools available at an affordable price that can help with this process.

Top 10 Best Linux Vulnerability Scanner to Scan Linux Servers

Tools to Scan Linux Servers	Key Features
1. Chkrootkit	1. Rootkit detection	2. File and directory checks	3. Process checks	4. Network checks	5. Kernel module checks	6. Login and password checks	7. Logging and reporting
2. Lynis	1. System and security auditing 2. Compliance testing 3. Malware and rootkit scanning 4. User and group management 5. Firewall and network configuration 6. System hardening
3. Rkhunter	1. Rootkit detection	2. File integrity checks	3. Suspicious file checks	4. Hidden process detection	5. Log file analysis	6. Network checks	7. MD5 hash generation	8. Whitelisting
4. ClamAV	1. Cross-platform support	2. Command-line interface	3. Automatic updates	4. Scanning modes	5. Quarantine	6. Customizable scanning options	7. Support for multiple file formats	8. Support for different protocols	9. Integration with other software
5. LMD	1. Scan Modes	2. Real-time Monitoring	3. Customizable Scans	4. Quarantine	5. Reporting	6. Integration	7. Command-line Interface	8. Lightweight
6. Radare2	1. Multi-architecture support	2. Interactive command-line interface	3. Graphical user interface	4. Binary analysis	5. Code analysis	6. Debugging	7. Plugin system
7. OpenVAS	1. Scanning and vulnerability assessment	2. Flexible and customizable scans	3. Reporting and remediation	4. Integration with other tools	5. User-friendly interface	6. Support for multiple platforms
8. REMnux	1. Pre-installed tools	2. Virtualization support	3. Easy setup	4.Comprehensive documentation	5. Community support	6. Security features
9. Tiger	1. System Audit	2. File Integrity	3. File Integrity	4. Firewall Configuration	5. Log Monitoring	6. File Permissions	7. Network Services	8. Reporting:
10. Maltrail	1. Detection of known malicious traffic patterns	2. Heuristic detection	3. Real-time monitoring	4. Historical analysis	5. Integration with other security tools

Top 10 Linux Vulnerability Scanners to Scan Linux Servers 2023

• Lynis
• Chkrootkit
• Rkhunter
• ClamAV
• LMD
• Radare2
• OpenVAS
• REMnux
• Tiger
• Maltrail

1. Chkrootkit

This is the other best tool to Scan Linux servers which is the existence of rootkits and one type of malicious software that gives unauthorized user access.

If you are working on a Linux-based server, the rootkit can cause the problem.

To detect the rootkit, the best program is a Unix-based program.

It also uses ‘strings’ and ‘grep’ to see the issues.

You can also use this as an alternative directory from the rescue disc or verify it as a compromised system.

Different components delete the entries, making this a ‘last log’ file.

You need to find the sniffer record so that it can do the checking of hidden entries.

To do the proper use, you must have the latest version of the server so that you can extract the file, and after that, you can compile them to be ready to start.

Features

• Chkrootkit is primarily designed to detect rootkits and malicious programs that can hide their presence from the operating system and allow an attacker to gain unauthorized access.
• The tool scans the system’s files and directories to check for any suspicious files or directories that could indicate the presence of a rootkit. 
• Chkrootkit checks for any hidden or suspicious processes running on the system that could be associated with a rootkit.
• The tool checks for any suspicious network connections or ports that could be associated with a rootkit.
• Chkrootkit checks the system’s kernel modules for any suspicious or hidden modules that could be associated with a rootkit.
• The tool checks the system’s login and password files for any suspicious entries that could indicate a rootkit attack.
• Chkrootkit generates detailed logs and reports of its findings, which system administrators can use to investigate and remediate any detected rootkit infections.

Demo Video

Price

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Chkrootkit – Trial / Demo

2. Lynis

This can detect the security hole which configures the flow.

Sometimes it goes beyond that, so exposing vulnerability is not the matter.

You need to take corrective action and get a detailed auditing report.

This is one of the renowned tools to Scan Linux Servers which is a preferable option for Linux.

It works based on Unix and macOS.

This open-source software has been used since 2007 under the GPL license.

It must run the host system.

Installation is not essential for Lynis; users can extract and run it.

You will also get this from the Git clone to access complete documentation and code.

Lynis has two types of service, and it works depending on the individuals and enterprise but is expected to be an outstanding performance.

Features

1. Lynis checks the system and network security configurations, identifies vulnerabilities, and provides recommendations to fix them.
2. Lynis helps to test the system against various security standards such as HIPAA, ISO 27001, PCI DSS, and others.
3. Lynis can scan the system for malware and rootkits and check for suspicious files and directories.
4. Lynis checks user and group settings to ensure they are secure and follow best practices.
5. Firewall and network configuration: Lynis checks the firewall and network settings to ensure they are correctly configured and secure.
6. System hardening: Lynis recommends hardening the system and increasing its overall security.

Demo Video

Price

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Lynis – Trial / Demo

3. Rkhunter

Rkhunter developed in 2003.

This suits the POSIX system and helps detect the rootkit and other vulnerabilities.

This Rkhunter ensures it goes through all the files separately and does the default directories, misconfiguration, kernel modules, etc.

Due to this application, everything must go with a routine check-up, and compared to others, it is safe and maintains the proper record.

It also conducts a suspicious program written on bash, which runs in everything but does not run in Linux machines and other versions of Unix.

Features

• Rkhunter is specifically designed to detect rootkits that may be installed on a system.
• Rkhunter can check the integrity of system files and compare them to known good values to ensure that they have not been tampered with.
• Rkhunter can detect files with suspicious properties, such as being owned by the root user or executable.
• Rkhunter can detect hidden processes that may be running on a system.
• Rkhunter can analyze system log files to detect suspicious activity.
• Rkhunter can check for open network ports and scan for known network service vulnerabilities.
• Rkhunter can generate MD5 hashes of important system files, which can be compared against known good values.
• Rkhunter allows the user to specify trusted files and directories, which will not be checked for rootkit activity.

Demo Video

Price

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Rkhunter – Trial / Demo

4. ClamAV

This is an open-source to Scan Linux Servers that helps detect trojans, viruses, and any other malware.

This application is entirely free so only many people scan their emails, personal information, other types of malicious files, etc.

This tool got developed not being many days, especially for Unix.

It also has a third-party version, which can be used in BSD, AIX, OSF, OpenVMS, macOS, etc.

It provides automatic and regular updates to the database and detects recent threats.

It also allows command-line scanning, a multi-threaded option that improves the scan speed.

It also helps you detect different files, including Zip, Gzip, RAR, Tar, CHM, SIS format, and much more.

Features

• ClamAV is available on a wide range of platforms, including Linux, macOS, Windows, and FreeBSD.
• ClamAV can be run from the command line, allowing for easy integration with other applications.
• ClamAV can automatically download and install virus database updates, ensuring that it always has the latest virus definitions.
• ClamAV offers various scanning modes, including on-demand, scheduled, and continuous scanning.
• When ClamAV detects a virus, it can move the infected file to a quarantine folder to prevent it from spreading.
• ClamAV offers customizable scanning options, allowing users to define which files, directories, and archives should be scanned.
• ClamAV supports a wide range of file formats, including archives, email attachments, and compressed files
• ClamAV supports scanning of files transferred over HTTP, FTP, SMTP, and other protocols.
• ClamAV can be integrated with various mail servers, content management systems, and other software to provide virus-scanning capabilities.

Demo Video

Price

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ClamAV – Trial / Demo

5. LMD

Linux Malware Detect is one of the renowned antiviruses for Linux systems.

This is perfect for identifying the threats found in the hosted environment.

Unlike others, it can detect malware and rootkits.

It also uses as a signature database if it finds out any malicious running code, then it quickly terminates that.

3It has no exact limit, and it works with its signature database.

It includes leveraging Team Cymru’s and ClamAV, which helps find more viruses.

To make the database populate, LMD captures the threat and gives the network edge intrusion, which can detect the system.

LMD also gets used through “maldet”, the standard line specially made for the Linux platform, which can easily search for Linux servers.

Features

• LMD offers a range of scanning modes, including standard signature-based scans, heuristic scans, and file hash comparisons, which help to identify both known and unknown malware
• LMD can be configured to continuously monitor the system for suspicious activity and send notifications when it detects malware.
• Users can customize their scans by specifying which directories, files, or file types to scan and exclude specific files or directories from the scan.
• LMD has the ability to quarantine detected malware to prevent it from spreading further and causing damage to the system
• LMD generates detailed reports of its scans, including information on any detected malware, which can be helpful for analysis and remediation.
• LMD can be integrated with other security tools such as ClamAV and Maldet, allowing for a more comprehensive malware detection and removal solution.
• LMD can be run from the command line, making it easy to automate scans and integrate them into scripts and other processes:
• LMD is lightweight and does not consume many system resources, making it suitable for desktop and server environments.

Demo Video

Price

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LMD – Trial / Demo

6. Radare2

It is a framework to analyze the binaries, and it does reverse-engineer, which can do excellent detection ability.

It detects the malformed binaries and gives users access to tools to manage and neutralize potential threats.

Many software security researchers prefer this tool to get excellent data presentation ability.

Another outstanding feature is that the user is not forced to use the command line and do tasks like dynamic analysis, software exploitation, etc. It’s recommended that users can do research any binary data.

Features

• Radare2 supports various architectures, including ARM, x86, MIPS, PowerPC, and more.
• Radare2’s interactive command-line interface allows users to navigate the binary code, disassemble instructions, and view data in various formats.
• Radare2 also offers a graphical user interface called Cutter, which makes it easier to perform everyday tasks like analyzing functions, setting breakpoints, and more.
• : Radare2 can analyze binaries to identify functions, symbols, strings, etc. It can also perform a function and data type recognition and can detect obfuscation techniques.
• Radare2 can disassemble code and provide a low-level view of executed instructions. It can also perform static and dynamic analysis to identify potential vulnerabilities and security issues.
• Radare2 has a built-in debugger that allows users to step through code, set breakpoints, and inspect memory and registers. It also supports remote debugging.
• Radare2 has a powerful plugin system that allows users to extend its functionality by adding new commands, analysis tools, and more.

Demo Video

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Radare2 – Trial / Demo

7. OpenVAS

This is also called Open Vulnerability Assessment System to Scan Linux Servers, which is hosted by the vulnerabilities and helps them to manage.

It is correctly designed so that it can fit all business types.

It also helps to detect the security issue hidden in their infrastructure.

Usually, this product is also well-known as GNessUs, and this is the current owner, and now it got changed to OpenVAS.

This is the  4.0 version which provides continuous updating.

This is one of the best networks which provides Network Vulnerability Testing (NVT).

Most security experts prefer this because it can scan faster than others.

It also gives excellent configurability, which the self-contained virtual machine uses to do safe malware research

Features

• OpenVAS can perform automated scans on networks and systems to identify potential vulnerabilities
• . It has many vulnerability tests that can detect common vulnerabilities such as weak passwords, unpatched software, and misconfigurations.
• OpenVAS allows users to customize scans according to their needs.
• Users can create custom scan configurations, select specific targets, and schedule scans to run at specific times.
• OpenVAS generates detailed reports on the vulnerabilities found during scans.
• The reports provide information on the severity of the vulnerabilities, recommended remediation actions, and other relevant details.
• : OpenVAS can be integrated with other security tools such as Metasploit and Nmap.
• This makes it possible to perform more comprehensive security assessments and tests.
• OpenVAS has a web-based interface that is user-friendly and easy to navigate.
• The interface allows users to configure scans, view reports, and manage the overall security assessment process
• OpenVAS is compatible with multiple operating systems, including Windows, Linux, and macOS.

Demo Video

Price

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OpenVAS – Trial / Demo

8. REMnux

This is a reverse-engineering method that can analyze the malware and can detect many browser-based issues.

It has hidden JavaScript, which has obfuscated code and flash applets.

It is capable of scanning PDF files, which performs memory forensics.

It also helps to detect the malicious program where it can detect the virus quickly.

This is very effective because of its decoding and reverse-engineering capabilities, which determine the suspicious program, and it is an undetectable innovative malicious program.

This application gets used for both Windows and Linux.

Features

• REMnux comes with a wide range of pre-installed tools and utilities useful for malware analysis and reverse engineering. These include debuggers, disassemblers, decompilers, memory forensics tools, network analysis tools, and more
• REMnux can be run as a virtual machine, making it easy to set up and use on various systems.
• REMnux can be easily set up using ISO images, virtual machine images, or Docker containers.
• REMnux comes with comprehensive documentation explaining how to use the included tools and utilities and how to customize the system to meet your needs.
• REMnux has an active community of users and developers who provide support and contribute to the development of the system.
• REMnux includes various security features such as a firewall, intrusion detection system, and security-focused packages.

Demo Video

Price

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9. Tiger

This is one of the best applications introduced in 1992, and A&M University started working on it.

This is a very popular program, especially for the Unix-like platform.

This is the security audit tool, which also does the intrusion detection system.

This is free to use under a GPL license.

This depends on the POSIX tool, which can create the perfect framework to increase security.

This tool is written in shell language, and this makes this tool more effective.

It is best to check the system status and other configurations.

Tiger also can be used for multipurpose and even for those who use POSIX tools.

Features

• Tiger can perform a system audit that checks for security vulnerabilities, configuration issues, and other potential risks.
• Tiger can monitor file integrity and detect changes in system files or configuration files.
• Tiger can check user accounts and password policies to ensure they meet security standards.
• Tiger can analyze firewall configurations and alert you if there are any potential security holes.
• Tiger can check file permissions to ensure that sensitive files are protected from unauthorized access.
• Tiger can analyze network services and alert you if there are any services running that are not necessary or potentially risky.
• Tiger generates reports that summarize the results of the security scan and provide recommendations for improving system security.
• Tiger generates reports that summarize the results of the security scan and provide recommendations for improving system security.

Demo Video

Price

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Tiger – Trial / Demo

10. Maltrail

It is one of the best traffic detection systems capable of keeping the server traffic clean.

This works best for avoiding malicious threats.

This tool performs all tasks where traffic sources backlist the sites and publish things online.

If you check the blacklisted site, you might have used the heuristic mechanism to detect threats.

Though it is optional, it can manage the server that has already been attacked.

This sensor can detect traffic where the server sends the information to the Maltrail server.

This detection system verifies the traffic quality and enhances the data between the source and the server.

Features

• patterns Maltrail uses a variety of signature-based detection techniques to identify traffic that matches known patterns associated with malware, botnets, and other malicious activity.
• Maltrail also employs heuristic analysis to identify traffic that may be suspicious or unusual, even if it doesn’t match any known patterns.
• Maltrail can be configured to monitor network traffic in real-time, allowing security teams to identify and respond to potential threats quickly.
• Maltrail stores all network traffic data in a database, which can be used to perform historical analysis and identify patterns of malicious activity over time.
• Maltrail can be integrated with other security tools, such as intrusion detection systems (IDS), to provide a more comprehensive security solution.

Demo Video

Price

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Maltrail – Trial / Demo

This is very tough because of the abovementioned work well, which is very good for the Linux environment.

We are pretty sure that many people are using it.

One most important things are each tool is dependent on other devices.

You need to select based on your requirement so that it can have the best vulnerability.