Introduction to Firewalls: Basic Configuration of Iptables and Firewalld
Learn the basic configuration of Linux firewall tools Iptables and Firewalld.
Classic ArticlesTravel Wars Sequel 4: Why Don't Taxi Drivers Watch Now?
Why are many taxi drivers now not using a meter and negotiating prices directly with you?
Classic ArticlesThe sequel of e-commerce war 4: Why do people buy things in Tiktok now instead of watching Taobao?
People used to buy things on Taobao. Why are they buying things on Tiktok now? Is Taobao no longer good?
Classic ArticlesSocial Wars Sequel 4: Why Don't Everyone Post on Moments Now?
Previously, everyone used to love posting on their social media accounts. Why doesn't anyone post on their social media accounts anymore?
Classic ArticlesShort video war sequel 4: Why do people watch live broadcast on Kwai now?
In the past, everyone watched the live broadcast on Tiktok. Why do they watch the live broadcast on Kwai now? Is Kwai better than Tiktok?
Classic ArticlesPayment Wars Sequel 4: Why Don't Thieves Steal Wallets Now?
Previously, thieves used to steal wallets. Why don't thieves steal wallets anymore? Because no one carries cash anymore?
Classic ArticlesFood Delivery War Sequel 7: Why are businesses unwilling to do food delivery now?
Previously, businesses were eager to make takeout. Why are many businesses unwilling to make takeout now? Isn't it profitable to make takeout?
Classic ArticlesOnline Shopping Wars Sequel 7: Why Don't People Buy Clothes Online Now?
In the past, everyone used to buy clothes online. Why don't many people buy clothes online now? Isn't buying clothes online good?
Classic ArticlesSearch Wars Sequel 7: Why Don't Everyone Use Baidu Search Now?
In the past, everyone used to search on Baidu. Why don't many people use Baidu search now? Isn't Baidu search good?
Classic ArticlesDelivery War Sequel 6: Why Delivery Guys Don't Want to Deliver Soup?
Why are delivery guys unwilling to deliver soup? Because the soup is prone to spilling, customers have to pay for it and have complained about it.