SEARCH KEYWORD -- Salary level
Work is not challenging is just an excuse in interview?
Usually when an interviewer asks the interviewee why he/she wants to change his/her job, one answer may be "My current job is not challenging, I want a more challenging job.". The interviewer may tend to think that there are always challenges everywhere and why the interviewee indulges himself/herself without putting much effort on his/her work. Here I want to say something to our interviewers. Work challenging is not equal to personal indulgence. The work is challenging which is an...
OpenLDAP Proxy -- slapd.conf
In the introductory post of OpenLDAP proxy, we mentioned that slapd.conf is the configuration file which tells the slapd service what to do. Apart from this, there is a dynamic way of configuring slapd where the configurations are stored in LDIF database. In the future, LDIF database will be the one for configuring slapd, the old style of slapd.conf is deprecated. The slapd.conf can be converted to LDIF style using the slapdtest command. slapdtest -f /etc/ldap/slapd.conf -F /etc...
OPENLDAP,OPENLDAP PROXY,SLAPD,SLAPD.CONF 2017-10-29 04:01:39
Python internals: how callables work
[The Python version described in this article is 3.x, more specifically - the 3.3 alpha release of CPython.] The concept of a callable is fundamental in Python. When thinking about what can be "called", the immediately obvious answer is functions. Whether it’s user defined functions (written by you), or builtin functions (most probably implemented in C inside the CPython interpreter), functions were meant to be called, right? Well, there are also methods, but they’re not very ...
Python,Callable work,Rationale 2012-03-24 05:20:27
Move.Me Writing Your Own WebSocket Server
The WebSocket protocol has applications beyond plain vanilla web development. I will explain how the protocol works, how to implement your own server and share some insights I had along the way. Before we get down and dirty, I will explain what I’ve been doing with it. At this point I expect many of you are saying “I’m not working on a web game this doesn’t seem relevant to me.†Well, neither am I. I embed a WebSocket server into my game engine and wit...
Socket,NetWorking,WebSocket,Server development 2012-01-28 07:06:43
Power Grid OT Simulation System
Mini OT-Energy-System Cyber Security Digital Twin Figure-00: Power_Grid_OT_Simulation_System Environment Diagram, version v0.1.2 (2024) Project Design Purpose: The primary objective of this project is to develop a scaled-down Operational Technology (OT) digital twin/equivalent — an advanced software simulation system capable of emulating the functionality of an small-sized 18KW (560+MkWh/year) hybrid power grid. This system will meet the requirements for cybersecurity training, exercises...
Deep Dive into Spin Locks in Golang
In concurrent programming, a Mutex is a commonly used synchronization mechanism to protect critical resources and prevent data races. However, in certain specific scenarios, especially when the lock-holding time is short and the number of threads is limited, a more lightweight lock known as a Spin Lock can provide higher performance. What is a Spin Lock A Spin Lock is a form of busy-wait lock. When a thread attempts to acquire a lock held by another thread, it continuously checks the lock's stat...
How does JGSS read Windows native TGT credential?
MS LSA is a protected subsystem that authenticates and logs users onto the local system. The user credential is stored at the native credential cache of LSA on Windows. This kind of credential is often used to authenticate the user to the server, one of the authentication methods is Kerberos. JGSS has provided a native interface which can read the native TGT credential and use it to get the TGS of a service. But how does JGSS read the native TGT credential? Here is a sample code for reading nati...
KERBEROS,JGSS,MS LSA,NATIVE CREDENTIAL,TGT,SESSION KEY TYPE 2015-03-25 03:42:32
Don't write on the whiteboard
I recently interviewed at a major technology company. I won't mention the name because, honestly, I can't remember whether I signed an NDA, much less how strong it was.I did well. Mostly because of luck. I normally step over myself when I interview. I guess I've improved over the years. Here are a few tips to ace your own interview.1. Don't write on the whiteboardWhen I interviewed at Palantir around 5 years ago, I had a lot of trouble with this. Yes, I knew next to nothing about compu...
Interview,Preparation,Whiteboard,Note,Python 2012-01-11 11:31:32
Web Security: In-Depth Explanation of X-XSS-Protection
What is X-XSS-Protection X-XSS-Protection is an HTTP response header designed to enable or configure built-in cross-site scripting (XSS) filters in certain versions of Internet Explorer, Chrome, and Safari. The purpose of these filters is to detect reflected XSS attacks in the response and prevent the loading of pages, thereby protecting users from such attacks. The X-XSS-Protection response header was initially introduced by Microsoft in Internet Explorer 8 to control the browser's XSS filter. ...
X-XSS-PROTECTION,WEB SECURITY,CONTENT SECURITY POLICY,XSS,CSP 2023-11-29 01:48:40
Why do so many technical recruiters suck?
It’s Tuesday, I get a call from an unknown number. There is a little hesitation, but I finally pick it up. My number is listed on my business card and I feel like I should get these calls unless I am in a meeting.- Hi, is this Mike?- Yes, speaking….- Hi Mike! How are you today?- Fine…- I am calling from XYZ Co, and we deal with recruiting and staff augmentation. I was wondering if you are looking for software developers.We are in San Francisco and itâ...
Recruitment,HR,Sucks,Tech recruiter 2011-11-13 08:22:02
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