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  Special ARP Uses: Gratuitous ARP, ARP Probe, and ARP Announce

In an Ethernet environment, all data is ultimately sent in the form of a Layer 2 Ethernet Frame, which includes the Src MAC, Dst MAC, and other headers such as CRC, etc. Ethernet will then deliver the data to the destination. When we program, we often specify the IP and Port, but rarely specify the MAC address. So, how is the Frame sent out? This is done by the operating system. If the system does not know the MAC address corresponding to an IP, it will send a broadcast ARP request (since this r...

   ARP,NETWORK,LINUX     2024-11-07 20:57:26

  Different types of keystore in Java -- JKS

JKS is Java Keystore, a proprietary keystore type designed for Java. It can be used to store private keys and certificates used for SSL communication, it cannot store secret keys however. The keytool shipped with JDKs cannot extract private keys stored on JKS. This type of keystore usually has an extension of jks. Next we will show how to operate the JKS keystore with pure Java code. Create JKS keystore The simplest method to create a JKS keystore to create an empty keystore. We can first get an...

   DEMO,EXAMPLE,KEYSTORE,JKS     2014-09-05 20:21:51

  Can API be copyrighted? At least Oracle hopes so

  The result of the lawsuit case war between Oracle and Google is clearer now. The court said that 9 lines of code of Android has violated intellectual property right, these 9 lines of code can be ignored relative to the number of codes for the whole Android system. But just like LinuxToy points out that the reasons why this case catches so much attention are : 1). The amount of money Oracle asked from Google is $1 billion; 2). The statement says Java language itself doesn't violate the int...

   Oracle,Google,API,Copyright,Lawsuit case     2012-05-11 00:47:58

  Steps to connect to MySQL on Windows Command Line

To connect to MySQL database on Windows through Command line, there are some steps to be followed.1. You need to start the MySQL service, you can go to Start->Control Panel->System and Securities->Administrative Tools->Component Service->Services(local), then on the right panel, you can find one service name called MySQL and you should start this service2. Go the the MySQL installation folder, which is something like this : C:\Program Files\MySQL\MySQL Server 5.1. In this folder, ...

   MySQL,Window,Command line,Connection,mysqld     2011-11-05 08:22:39

  Apple And SAP Joined To Grow A New Development Community

SAP has teamed up with Apple. The two big worlds where at one end, Apple’s world-renowned user experiences and SAP’s unparalleled end-to-end business processes and software at the other end have successfully combined. As a result, the partnership opens up new opportunities, revolutionizing the entire digital experience for customers allowing numerous app development companies and developers to make a huge difference.   “I believe what’s going to happen with the relea...

   APPLE,IOS,IOS APPLICATION DEVELOPMENT,SAP,SAP HANA,SAP CLOUD PLATFORM     2017-06-30 02:37:47

  How does CSDN dare to use plain text as password?

Recently, the China's largest Chinese IT community website named CSDN leaked its user's account information. Later today CSDN made an announcements to its users on their website. The announcement said that some user account information was leaked and the passwords of the accounts were stored as plain text in their database before 2009, and after 2009, they adopted an encryption algorithm to encrypt user password. They urged all users who registered the account before 2009 to change their passwor...

   Security,Information leak,CSDN,Plain text     2011-12-22 09:10:01

  New Android simulator has some big improvements

Message from the Android developer blog, the Android emulator now has a number of improvements and optimizations. It allows developers to develop applications more conveniently.The Android emulator is an important tool for Android developers developing and testing applications. Due to the rapid growth of Android hardware, the simulator has been slightly left behind. The new simulator brings some new functions including support for GPU, the CPU acceleration sensor support, multi-touch input suppo...

   Android, Simulator,GPU,OpenGL     2012-04-10 13:02:31

  Privacy & Security What Is the Difference?

                       When we discuss the internet today, there are two terms that we frequently here: privacy and security. While you may think that these two terms mean the same thing and are thus interchangeable, this isn’t true. As such, you’ll want to take a moment to learn the difference between these two terms. Understanding the Difference Between Privacy and Security When you open a checking account you share your p...

   SECURITY,PRIVACY,CYBERSECURITY     2018-12-27 00:29:57

  Generate signed certificate from CSR in Java

In our previous tutorial, we have explained how to generate CSR which can be sent to CA for generating a signed certificate. In this tutorial, we will explain how to generate the signed certificate from CSR in Java. We will not use an actual CA but a self-signed certificate to act as a CA certificate. Since the CSR contains the subject information where a certificate needs to be generated and signed for. The key here is to extract the subject information from the CSR and then set it as the subje...

   JAVA,CSR,SIGN CERTIFICATE     2020-10-24 07:03:17

  Microsoft releases Windows 8 RTM

Microsoft's Windows 8 RTM version now is available for download to MSDN and TechNet subscribers. This RTM version will be the same as the final Windows 8 release version. Windows 8 may be released on 26th October.Microsoft Software Assurance users will be able to get RTM version of the new system on 16th August. Volume License customers without Software Assurance will be able to purchase Windows 8 through Microsoft Volume License Resellers starting from 1st September.. Although this version is a...

   Windows 8 RTM, Release,MSDN,TechNet     2012-08-16 15:04:10

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