https://calee0219.github.io/tag/iptables/IptablesHugoBlox Kit (https://hugoblox.com)en-us©Mon, 09 Aug 2021 07:48:37 +0800https://calee0219.github.io/media/icon_hu_da05098ef60dc2e7.pnghttps://calee0219.github.io/tag/iptables/https://calee0219.github.io/blog/note_iptables/Mon, 09 Aug 2021 07:48:37 +0800https://calee0219.github.io/blog/note_iptables/<h2 id="iptables">iptables</h2> <p> </p> <ul> <li>iptables [-t table] <code>command</code> <code>CHAIN</code> [NUM] match criteria -j ACTION</li> <li><code>CHAIN</code> <ul> <li>-N: (new) new a chain</li> <li>-X: delete chain</li> <li>-F: flush all chain</li> <li>-Z: zero the pkg counter</li> <li>-P: policy of chain</li> <li>-E: rename</li> </ul> </li> <li>rule <ul> <li>-A: append rule</li> <li>-I: insert rule to number</li> <li>-R: replace</li> <li>-D: delete</li> </ul> </li> <li>LIST <ul> <li>-L: list</li> <li>-S: Specification</li> <li>-n: user number to show</li> <li>-v: verbose</li> <li>-x: show msg</li> <li>&ndash;line number: show line number</li> </ul> </li> </ul> <h3 id="dst-nat">DST-NAT</h3> <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">sudo sysctl net.ipv4.ip_forward=1 </span></span><span class="line"><span class="cl">sudo iptables -t nat -A PREROUTING -j DNAT -p tcp --to-destination 192.168.15.254:80 -i ens19 </span></span></code></pre></div>