Packet Filtering

Understanding iptables in Linux

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Understanding iptables in Linux

Click the blue text above to follow me! OverviewTechnically speaking, iptables is not a firewall; the real firewall is netfilter, which runs in the system kernel. iptables is merely a representative of netfilter, primarily functioning to interact with users, obtaining their requests and converting them into information that netfilter can accept.iptables mainly operates at the … Read more

Linux Traffic Control

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Linux Traffic Control

Linux Traffic Control Overview● Queueing Discipline (Qdisc): Defines the queuing strategy for packets, such as First In First Out (<span>pfifo_fast</span>) or Hierarchical Token Bucket (<span>HTB</span>).● Class: Forms a hierarchical structure combined with queueing disciplines to allocate bandwidth priorities (e.g., assigning high priority to real-time traffic).● Filter: Classifies traffic based on rules (such as IP address, … Read more