Getting Started with Firewalld on RHEL, Rocky Linux, Alma Linux

Firewalld is the standard firewall software on RHEL-based Linux systems (Fedora, Alma Linux, Rocky Linux). This tutorial is going to show you some basic usages of firewalld. Install Firewalld We can easily install it from the default software repository. sudo dnf install -y firewalld Start it and enable autostart on system boot. sudo systemctl enable –now firewalld Check status: sudo systemctl status firewalld If this is a server, then you probably want to allow SSH traffic, so you won’t be locked out of your server. sudo firewall-cmd –permanent –add-service=ssh Firewall Zone Unlike UFW, Firewalld is designed to work with multiple…


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Getting Started with Firewalld on RHEL, Rocky Linux, Alma Linux

Set Up BIND DNS Resolver on RHEL 9/Rocky Linux 9/Alma Linux 9

This tutorial will show you how to set up a local DNS resolver on Rocky Linux 9/Alma Linux 9, with the widely-used BIND9 DNS software. There are many synonyms for DNS resolver, some of which are listed below. They all refer to the same thing. full resolver (in contrast to stub resolver) DNS recursor recursive DNS server recursive resolver Also, be aware that A DNS server can also called a name server. Examples of DNS resolvers are 8.8.8.8 (Google public DNS server) and 1.1.1.1 (Cloudflare public DNS server). The OS on your PC also has a resolver, although it’s called…


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Set Up BIND DNS Resolver on RHEL 9/Rocky Linux 9/Alma Linux 9

How to Set Up OpenConnect VPN Server (ocserv) on Ubuntu 24.04

This tutorial is going to show you how to run your own VPN server by installing OpenConnect VPN server on Ubuntu 24.04. OpenConnect VPN server, aka ocserv, is an open-source implementation of Cisco AnyConnnect VPN protocol, which is widely used in businesses and universities. AnyConnect is an SSL-based VPN protocol that allows individual users to connect to a remote network. Why Set Up Your Own VPN Server? Maybe you are a VPN service provider or a system administrator, which behooves you to set up our own VPN server. You don’t trust the no-logging policy of VPN service providers, so you…


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How to Set Up OpenConnect VPN Server (ocserv) on Ubuntu 24.04

How to Install Free ZeroSSL Certificate on Ubuntu Server

In the previous tutorial, we discussed the free Let’s Encrypt SSL certificate. Today I’m going to introduce another certificate authority that issue free SSL certificate: ZeroSSL. ZeroSSL Features It offers 90-day certificates and 1-year certificates. multi-domain certificates and wildcard certificates. ACME support. Its dedicated ACME Bot (ZeroSSL Bot) allows you to obtain and renew 90-day certificates automatically and completely free of charge. Supports third-party ACME clients No rate limit SSL monitoring REST API Domain verification via email, CNAME or file upload To be honest, many of these features require a premium plan. I’m interested in ZeroSSL because one of my…


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How to Install Free ZeroSSL Certificate on Ubuntu Server

The Regulatory Landscape for Bitcoin's Future

The future of Bitcoin and its regulatory landscape remains uncertain and complex. As it continues to gain prominence, governments and financial authorities around the globe are grappling with the challenge of regulating this decentralized and volatile digital currency. While some countries endorse its potential for innovation and economic growth, others are cautious due to its associations with illicit activities and its lack of central control. The discourse around Bitcoin regulation often revolves around its status: is it a commodity, a currency, or a form of property? This debate has significant implications for how Bitcoin transactions are taxed and whether they…


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The Regulatory Landscape for Bitcoin's Future

How to Install Thinkorswim Trading Platform on Ubuntu 22.04/20.04

This tutorial will show you how to install the Thinkorswim trading platform on Ubuntu 22.04/20.04 desktop, so you can trade stocks. ThinkorSwim Features It allows you to trade stocks, options, options on futures, ETFs, futures, and forex. Economic data straight from the Fed. Trade select securities 24 hours a day, 5 days a week. Available securities include FXI, SPY, EEM, GLD, SLV, DIA, UNG, TLT, IWM, QQQ, USO, SH, RWM, PSQ, AGG, DOG, EWA, EFA, EWJ, IJH, VTI, XLF, XLE, and XLK. Practice paper trading with the paperMoney feature. Track and modify your watchlist, orders, and alerts, including saved orders.…


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How to Install Thinkorswim Trading Platform on Ubuntu 22.04/20.04

Bitcoin Investment Progress for this Decade in Clanton

Bitcoin, the most popular form of digital currency, has made significant strides in Clanton over the last decade. What was once a niche form of payment used only by a small subset of the tech-savvy population has now become a mainstream investment avenue. Today, businesses, large and small, in Clanton are starting to accept Bitcoin…


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Bitcoin Investment Progress for this Decade in Clanton