April 9, 2026
How to Configure Immutable cPanel Backups: Ransomware Protection via S3
backup and recovery,Cpanel,cPanel & WHM,Firewall/Iptables/Security,To implement immutable backups in cPanel, administrators configure the Backup Configuration tool to point toward an off-site S3-compatible storage provider that supports Object Lock. Enabling Object Lock in compliance mode ensures that once data reaches the remote bucket, no user or ransomware script can modify or delete the files for a predetermined retention period. This…
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April 8, 2026
Fix DNS Server Not Responding: Expert Network Troubleshooting Guide
DNS,Firewall/Iptables/Security,What Does DNS Server Not Responding Mean and How Engineers Fix It The DNS Server Not Responding error occurs when a system fails to resolve a domain name into its corresponding IP address, effectively breaking communication between applications and servers. In real-world infrastructure environments, engineers do not treat this as a simple browser issue but…
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April 8, 2026
Beyond WAF: Why Apache WAAP is the Must-Have Security Control for 2026
AI on AWS,AWS,Cloud Infrastructure,Firewall/Iptables/Security,Apache WAAP (Web Application and API Protection) is the essential evolution of traditional firewalls designed to secure modern web environments. It integrates signature-based filtering with behavioral AI and API-specific security to block sophisticated 2026 threats. Unlike a standard WAF, WAAP handles bot mitigation and DDoS protection natively. This unified control ensures that infrastructure remains resilient…
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April 7, 2026
FTP vs SFTP vs SSH: Which Protocol Is Best for Hosting?
Firewall/Iptables/Security,IT Management,Linux/Windows Support,FTP vs SFTP vs SSH are the three most commonly used protocols for file transfer and server access, but they differ significantly in security, performance, and real-world usage. FTP is a legacy protocol that transfers data in plain text, while SFTP and SSH provide encrypted communication, making them the preferred choice for modern hosting environments.…
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April 7, 2026
How to Fix FTP Connection Errors in FileZilla & WinSCP (Complete Guide)
Firewall/Iptables/Security,Linux General,FTP connection errors occur when the client fails to establish a stable communication channel with the server due to firewall restrictions, incorrect credentials, TLS mismatches, or passive mode misconfigurations. These issues typically appear as errors like “Connection Timed Out,” “530 Login Incorrect,” or “Failed to Retrieve Directory Listing.” Engineers resolve these problems by verifying port…
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February 28, 2020
Filtering web-traffic to specific Countries
Firewall/Iptables/Security,Linux General,There are numerous tools and methods to manage traffic to web servers, and here we are going to review the steps to block/allow Apache web traffic based on origin country. You can redirect or block web traffic of your client using the GeoIP module. This would be helpful in Fraud Detection, Target Content, Spam Fighting,…
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January 10, 2018
Getting an A+ rating on the Qualys SSL Test on all cPanel Domains
Firewall/Iptables/Security,Security is a basic requirement of the server. We will use SSLLabs, a testing project of Qualys, a company that provides strategic security solutions. In this post, we will see how to use their A+ indicator which is the industry high standard in SSL security and try to meet its requirements. The SSLLabs checker covers…
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June 23, 2017
AWS Security Group Rules (Allow Ip address and port numbers using the AWS security group)
AWS,Firewall/Iptables/Security,Amazon EC2 Security Groups for Linux Instances. A security group acts as a virtual firewall that controls the traffic for one or more instances. When an instance is launched, you associate one or more security groups with that instance. The rules of a security group controls the inbound traffic that’s allowed to reach the instances…
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May 8, 2017
Useful Firewall Rules to Configure and Manage Firewall in Linux
Firewall/Iptables/Security,Managing network traffic is a critical aspect of any organization and a tricky job for system administrators. Knowing what traffic to allow and what to block can be a matter of being safe or vulnerable to cyber-attacks. A firewall is a tool built to aid system administrator’s in regulating incoming and outgoing traffic. System administrators…
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