I found the 04x version of "knock" and have installed it but cannot see an obvious way to set "opensshd"'s port to "secure".
Can someone please give me a guide here please

Regards
Bob
YesI am assuming the rule above is correct for what I need.
Be aware that I have had some issues when mixing tcp and udp packet types when using knock. So start testing with just plain port numbers without the tcp or udp flags.Next step - testing "knock"
Lightning wrote:Be aware that I have had some issues when mixing tcp and udp packet types when using knock. So start testing with just plain port numbers without the tcp or udp flags.Next step - testing "knock"
Looking at the source code, it does explain that the knock client included in the package is extremely basic and if you want or need to send more complicated packets with different flags set on each packet like "fin, syn, rst, psh, ack, or urg" then you should use another client such as "hping, sendip, or packit". So I think the main issue is the client is not complex enough to do all of the things the server is capable of doing. However be aware that you can send up to a 32 port sequence and it does not matter if the port is closed or not because knock runs at a link-layer level. For my own purposes I have never had anyone get into a knock protected system. Of course I am also doubtful anyone has really tried as there really isn't anything of value to be found on anything that I own unless they are after open source software.Is that an issue for just "knockd" or the windoze client ?? or both ??
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