I have recently changed the domain name of this blog from rtoodtoo.net to rtodto.net. My intention was to buy r2d2.net in the first place but very smart people bought it long time ago before me:) I couldn’t even find the r2d2.nl available. Now I think there isn’t much make sense to have such a long
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Rest in peace Kenny… http://www.bbc.com/news/entertainment-arts-37072736
Here is a quick python script which calculates average, variance and standard deviation. This is also part of codeacademy work. I must say last time I worked with variance and standard deviation it was more than 10 years ago in statistics course. Hence a bit of reminder here for me too: (Some are from wikipedia
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Today I have stumbled across a system resource utilization tool htop which is way more visual than top and it is easier to use too. For example, following is from my single core amazon cloud centos server. You can easily see that sorting is by CPU and if you want to change it, just press
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I have written a simple python game script to sink a battleship. It is very simple as it was almost a year ago last time when I wrote a long python script. Thanks to codeacademy that it helps to brush up my python skills. I think it is also good to put the script here
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I have been asked several times if RtooDtoo.net will stay alive or not. I don’t have any plan to bring it down. On the contrary, I will continue to update the blog but I am quite busy in learning new technologies some of which I haven’t really worked with before. Another news is that, soon I
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As they say: “All good things must come to an end”, I have left Juniper Networks after I worked for 5 years as Technical Support Engineer. I still can’t believe that those 5 years passed so quickly. I have learned bunch of new technologies and it was a wonderful experience to work there. I will
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Path MTU discovery that is in place today is relying on ICMP based MTU discovery i.e you send an oversize packet which can’t be forwarded by an intermediate host in the path because the next hop link has a lower MTU size, then the source host is notified by this hop which can’t forward this
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TCP sliding window is very crucial concept in understanding how TCP behaves. In order to see how this mechanism works, I have rate limited an HTTP download and observed what happens during this scenario in which we will see reports from Wireshark that [TCP Window Full] and [TCP ZeroWindow]. The aim of this post is
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Have you ever wanted to test an IPsec tunnel but wanted to see the packets in clear text instead of all those encrypted gibberish stuff? One of the ways and to me the easiest one is to use NULL encryption. In this post we will see how we can leverage this no encryption method. Below
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