SLTechnology News&Howtos › Network Security ›

Netfilter/iptables

Shulou Source: shulou.com Published: 2022-06-01 03:30:56 10月06日 Update

Netfilter command structure:

Consists of four tables:

Filter: performs packet filtering

Nat: address translation

Mangle: modify packet content

Raw: speed up packet transmission and improve firewall performance

There are five kinds of hook functions:

PREROUTING

INPUT

OUTPUT

FORWARD

POSTROUTING