智能运维
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How to Check the OpenSSL Version Number
Introduction Want to learn what version of OpenSSL you have? OpenSSL is an open-source cryptographic library and SSL toolkit. The applications contained in the library help create a secure communicat…
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How to Generate a Certificate Signing Request (CSR) With OpenSSL
Introduction A Certificate Signing Request (CSR) is the first step in setting up an SSL Certificate on your website. SSL certificates are provided by Certificate Authorities (CA), which require a Cer…
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How to Set up & Configure ModSecurity on Apache
Introduction ModSecurity is a plug-in module for Apache that works like a firewall. It functions through rule sets, which allow you to customize and configure your server security. ModSecurity can al…
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How to Use SSH Port Forwarding
Introduction SSH port forwarding is often referred to as SSH tunneling, and the two terms are used interchangeably. The encrypted SSH ‘tunnel’ serves as a vessel to transfer assorted data and deliver…
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How to Fix "ssh_exchange_identification: read: Connection reset by peer" Error
Introduction A remote machine has prevented an SSH connection you were attempting to establish or maintain. The “ssh_exchange_identification: read: Connection reset by peer” message is not specific e…
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Iptables Tutorial: Ultimate Guide to Linux Firewall
Introduction All modern operating systems come equipped with a firewall – a software application that regulates network traffic to a computer. Firewalls create a barrier between a trusted network (li…
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Apache vs Nginx - Detailed Comparison
Introduction Web servers have been a fundamental part of the internet ever since the beginnings of the World Wide Web. Web server software receives requests from remote clients and serves the clients…
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How to Install WordPress Manually Using cPanel
Introduction WordPress (WP) is a widely used content-management system. Its ease of use, numerous themes, and plugins, as well as strong community support, have made it the number one solution in the…
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What is Kubernetes? Complete Guide
Introduction Container deployment has transformed established software development practices. New tools and techniques were necessary so Google developed Kubernetes, an open-source container orchestr…
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How to Set Up Apache Virtual Hosts on Ubuntu 18.04
What is Apache Virtual Host? Virtual Host allows you to run multiple websites from a single physical server or Virtual Private Server. There are two types of virtual hosts on Apache: IP-Based Vi…