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Debian / Ubuntu: Set Port Knocking With Knockd and IptablesMay 02, 2013, 23:00 (6 Talkback[s])
(Other stories by Anonymous)
My iptables based firewall allows only port TCP 80 and 443. I also need tcp port # 22, but I do not have static IP at my home. How do I open and close TCP port #22 on demand under Debian or Ubuntu Linux based server systems? How do I install a port-knock server called knockd and configure it with iptables to open tcp port #22 or any other ports?
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