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Showing posts with the label lxc

How to troubleshoot SSH Connection issues / SSH Connection Refused - Solved || Explained

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The Story..... We have two machines amazing-seasnail and first-shiner . first one being client and latter being server . ubuntu user on amazing-seasnail machine is configured connect to first-shiner . But due to some reason i am not able to do ssh login to first-shiner.         I have tried to simulate few problems and how to go about in these situations and what could be possible causes Here it goes .......  Thanks you guys !! Have a great day ahead. Stay home stay safe, Keep learning keep  sharing .

Obscuring server from pings (@ procfs level)

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Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. Problem :                      1) By using ping sweeps it becomes easy to identify hosts alive in the network,which    can result in ping flooding, once ping flooding crosses the limit, the network gets jammed Lets hide our servers:                      1) view the current settings, make the necessary change,write it to the file                      2) test it !!! Done  Too Much of Theory, Lets get our hand dirty Ping Sweep Ping Sweep is a technique used to identify if the hosts are alive in the networks using their IP add...

Jail SSH Users !!!

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