Deepin is a Linux distribution based on Debian. Its default firewall is iptables. Unlike firewalld, iptables is a rule-based firewall that…

Recently, my server has been overloaded because of insufficient disk space (in fact, this problem has existed for a long time, but I haven't…

Usually, we directly uninstall ufw with apt, but there are still a bunch of ufw chains left in iptables. Affects the aesthetics. Only the…

Background During the attack and defense exercise, a device could not connect to the master control end. When using iptables -L INPUT --line…

1. Overview This article introduces knowledge about firewalls, including their functions, classifications, performance, iptables, and…

1. Overview This article introduces knowledge about firewalls, including their functions, classifications, performance, iptables, and…

Note: The blogger previously posted a tutorial on blocking specific country IPs on VPS, which is useful for preventing access to websites…

在cloudflare中添加自定义的防火墙规则，以求更加高效的防御。 添加此项目的四条规则# GitHub：cloudflare-block-bad-bot-ruleset 复制rules中的内容 cloudflare后台选择你的域名→Security→WAF→Create…

Copy firewall-cmd --zone=public --add-port={PORT}/tcp --permanent --zone #作用域 --add-port=80/tcp #添加端口，格式：端口/通讯协议 --perma…