Introduction To check service port numbers on a Unix based operating system, you may use one of the following methods… netstat command netstat command is used to display network related data. It is available on most Unix flavors including MacOS. The syntax may vary so it is recommended to check the manual (ex. man netstat
Introduction This is a commonly asked question among students. I think part of the confusion comes from mixing terms from academia specially operating systems courses with software industry terms such as cloud computing and big data. Network operating systems and distributed operating systems are fundamentally different concepts. Let us see what the difference is. Network
Introduction In order for two networked computers to exchange data, a protocol has to be used. A protocol is an agreed method to identify computers (ex. PC, iPhone), applications (ex. browser, web server) and resources (ex. webpage, image, database table). A protocol also facilitates secure (ex. encryption) and reliable (ex. data loss protection) communication. The
In a previous article, I explained how to use Charles proxy to test SSL network connections for iPhone and Android. For tvOS, it is a little bit different. Follow the steps below to configure Charles proxy on Apple TV with SSL support. Please not that this setup can also be applied to iOS as well.
Introduction I started to get paranoid due to the rise of online security threats. Going offline is not a practical solution in the world of “Internet of things”. The fact that the average individual is not often under attack must not be taken for granted. Not staying safe online should keep each one of us awake
Introduction I can easily assume that the majority of software engineers are not computer security experts, however; I think there should be no excuse for the average software engineer not to get familiar with basic concepts. For instance, if you were asked: “what is SSL?” I guess it is either you do not know the
I assume you have a Mac computer and web.py is already installed. I also assume openssl is installed. Follow the steps below to enable SSL on your web server. openssl genrsa -des3 -out server.key 1024 openssl req -new -key server.key -out server.csr openssl x509 -req -days 365 -in server.csr -signkey server.key -out server.crt In your
If you want to view and decrypt SSL connections (https) sent from your mobile device or if you are getting the message “ssl proxying not enabled for this host: enable in proxy settings, ssl locations” then you came to the right place. Here is a tutorial on how to do that: Charles SSL certificate iPhone
Winexe can be used to invoke remote Windows commands from Unix based system like Linux. Follow the steps below to build and install Winexe… installation Steps Download winexe from sourceforge Copy source code to the linux machine for example: scp winexe-1.00.tar.gz user@linuxhost:/path/to/winexe ssh to the linux machine and extract the package you just uploaded in
Problem I have an application on Windows running as a daemon. I want this app to keep running all the time. If the application is closed by mistake or crashes for some reason then I need a way to automatically restart the application and send a notification about the event. Solution I prefer simple tools
