21 Server Security Tips to Secure Your Server


Server security is essential for any business or organization that relies on a server to store, process, and share data. A secure server ensures that sensitive information is protected from unauthorized access, theft, and cyberattacks. In this article, we will share 21 server security tips to help you secure your server and safeguard your data.

Keep Your Server Software Updated

One of most important server security tips is to keep your server software updated. Software updates often include security patches that address known vulnerabilities. Failure to update your software can leave your server open to attacks.

Use Strong Passwords

Using strong passwords is essential to server security. Weak passwords are easy to guess or crack, which can leave your server vulnerable to unauthorized access. Consider using a password manager to generate and store complex passwords.

Enable Two-Factor Authentication

Two-factor authentication provides an additional layer of security by requiring a second form of identification to access your server. This could include a fingerprint scan, facial recognition, or a one-time code sent to your phone.

Use Secure Protocols

Secure protocols like HTTPS, SSL, and TLS encrypt data transmitted between your server and clients. This helps to prevent eavesdropping, data theft, and man-in-the-middle attacks.

Restrict Access to Your Server

Limiting access to your server can help to prevent unauthorized access. Only grant access to users who need it, and use role-based access controls to limit what each user can do on server.

Monitor Server Logs

Monitoring server logs can help you identify security threats and attacks. Regularly review your logs to look for suspicious activity, such as failed login attempts, unusual traffic, and unexpected errors.

Implement Firewall Rules

Firewalls are an essential part of server security. They can be used to restrict traffic to your server, block unauthorized access, and prevent attacks like DDoS and port scanning.

Use Antivirus Software

Antivirus software can help to detect and remove malware from your server. It is important to regularly update your antivirus software and run scans to ensure that your server remains protected.

Use a Virtual Private Network (VPN)

A virtual private network (VPN) can be used to create a secure connection between your server and clients. This helps to prevent eavesdropping and data theft when data is transmitted over public networks.

Disable Unnecessary Services

Disabling unnecessary services on your server can help to reduce its attack surface. This can include disabling FTP, Telnet, and other unencrypted protocols that can be used to gain unauthorized access.

Use Encryption to Secure Data

Encryption can be used to secure data stored on your server. This can include encrypting sensitive files, folders, and databases using tools like BitLocker, VeraCrypt, or LUKS.

Implement Access Controls

Access controls are an essential part of server security. They can be used to restrict access to specific resources, like files, folders, and databases, and prevent unauthorized access.

Regularly Backup Your Data

Regularly backing up your data is an essential part of server security. This can help you to recover data in event of a security breach, system failure, or other disaster.

Use Secure File Transfer Protocols

Secure file transfer protocols like SFTP and SCP can be used to transfer files to and from your server securely. These protocols use encryption to protect data during transmission.

Harden Your Operating System

Harden your operating system to remove unnecessary components, disable unnecessary services, and apply security settings that enhance server security.

Implement Network Segmentation

Network segmentation can be used to isolate critical resources and prevent unauthorized access. This can be achieved by dividing your network into smaller subnets and implementing firewall rules to restrict access.

Implement Intrusion Detection and Prevention Systems

Intrusion detection and prevention systems can help to detect and prevent unauthorized access to your server. These systems monitor network traffic and look for suspicious activity, such as port scanning, malware, and unauthorized access attempts.

Use a Web Application Firewall (WAF)

A web application firewall (WAF) can be used to protect web applications running on your server from attacks like SQL injection, cross-site scripting (XSS), and other web-based attacks. A WAF can be used to block malicious traffic and filter incoming requests.

Use Multi-Factor Authentication

Multi-factor authentication adds an extra layer of security by requiring multiple forms of identification to access your server. This could include a password, a security token, or a biometric scan.

Implement Incident Response Procedures

Incident response procedures should be in place to deal with security breaches and other security incidents. These procedures should include steps to contain incident, investigate cause, and implement measures to prevent future incidents.

Regularly Conduct Security Audits

Regular security audits can help you identify security weaknesses and vulnerabilities in your server infrastructure. These audits should be conducted by a third-party security expert and should include a comprehensive review of your server software, hardware, and security policies.

Use a Secure Operating System

Choosing a secure operating system is critical to server security. Some popular secure operating systems include Linux distributions like Ubuntu, Fedora, and CentOS, which are known for their security features.

Use a Host Intrusion Detection System (HIDS)

A host intrusion detection system (HIDS) can be used to monitor activity on your server and detect intrusions. HIDS software can monitor logs, system files, and other critical files for changes or suspicious activity.

Enable Automatic Security Updates

Enabling automatic security updates can help ensure that your server remains secure. This feature allows server software to automatically download and install security updates as soon as they become available.

Use Virtualization

Virtualization can be used to isolate applications and services on your server, providing an additional layer of security. Virtualization can also be used to create virtual private servers (VPS) that can be easily managed and secured.

Regularly Monitor Security News

Staying informed about latest security threats and vulnerabilities is important to server security. Regularly monitoring security news and updates can help you stay ahead of emerging threats and implement necessary security measures.

Educate Users on Security Best Practices

Educating your users on security best practices is essential to server security. This can include training on password management, social engineering attacks, and how to identify and report suspicious activity.

Use Cloud-Based Security Services

Cloud-based security services can provide additional layers of security to your server infrastructure. These services can include firewalls, intrusion detection and prevention systems, and web application firewalls.

Implement Server Hardening Practices

Server hardening practices can help to reduce attack surface of your server. This can include disabling unnecessary services, removing unnecessary software, and implementing access controls.

Use Security Certificates

Security certificates, like SSL and TLS certificates, can be used to secure web traffic between your server and clients. These certificates encrypt data transmitted over internet, providing an additional layer of security.


Securing your server is essential to protect your data from cyberattacks, theft, and unauthorized access. By implementing 21 server security tips outlined in this article, you can enhance security of your server and safeguard your data. Remember to regularly update your software, use strong passwords and two-factor authentication, implement access controls, and regularly backup your data. By taking these steps, you can minimize risk of a security breach and ensure ongoing security of your server infrastructure.

Updated on: 28-Mar-2023


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