SRX Tips: Default application timeouts

It can be annoying if you are new to SRX and your SSH connection towards the firewall keeps timing out. You can of course activate keep alive on your SSH client or play with the default ssh timeout on SRX itself. First let’s see how we can check the current timeout. root@J200> start shell user
Read More »

SRX Tips: Static Host Mapping

After a year of being away from SRX, I have noticed that I forgot the CLI command to set a static hostname to IP mapping. If you haven’t used this feature so far, it simply allows you to have a /etc/hosts file similar to what we have in Linux and here is how we set
Read More »

tmux multiple terminals

I think most of us watched the movie Inception in which there was dream within a dream. It was a bit of confusing at some point. There is a Linux version of it 🙂 terminal within terminal provided by the fantastic tool tmux (terminal multiplexer). I use this tool during some troubleshooting scenarios when I
Read More »

Migrating from rtoodtoo.net to rtodto.net

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
Read More »

Average, variance & standard deviation in Python

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
Read More »

htop an alternative to top command

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
Read More »

a simple battleship python script

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
Read More »

Fate of Rtoo

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
Read More »

All good things must come to an end!

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
Read More »