Secure Socket Layer (SSL)

-
Secure Socket Layer (SSL)
  1. The industry standard method for protecting web communications develpoped by Netscape communications corporation
  2. The SSL security portocol provides data encryption, server authentication, message integrity and optional clienmt authentication for a TCP/IP connection
  3. Because SSL is built into all major browser and web servers, simply installing adigital certificate , turns on their SSL capabilities
  4. SSL comes in twp strenghts, 40-bit and 128-bit, which refere ti the lenmgth of the sesion key generat3ed by every encrypteed transaction
  5. The longer the key, the more doifficult its is tobreak the encryption code
  6. MOst browsers support 40-bit SSL sessions and latest browsers including Netscaoe Communicator 4.0, enable users to encrypt transactions in 128-bit sesssions - trillions of time stronger than 40-bit sessions
  7. Global compankies thta require international transactions over the web can use global server certificate program to offer strong encryption to their customers

Comments

Post a Comment

Popular posts from this blog

Parallel Database design, query processing

-
Image
Parallel Database design, query processing, and case study In this post, we are going to analyze the concepts of Parallel Database design, query processing, and case study. Parallel database design Hardware Architecture Data partitioning Query processing Hardware Architecture Shared Memory Shared Disk> Shared Nothing Data Partitioning Partitioning a relation involves distributing its tuples over several disks Three Kinds – Range Partitioning Round-robin Partitioning Hashing Partitioning Range Partitioning is good for Ideal for point and range queries on the partitioning attribute Hash partitioning Ideal for point queries based on the partitioning attribute Ideal for sequential sca...
Read more

Apache Hadoop Prerequisites and Installation

-
Image
Apache Hadoop Prerequisites and Installation The following files are needed for any Hadoop project: Please follow the steps given in the following link for seting up Hadoop on Windows 10 machines How to set up Hadoop on Windows 10 hadoop-hdfs-3.3.4.jar (Java Archive File) zookeeper-3.6.4.jar (Java Archive File) log4j-1.2-api-2.19.0.jar (Java Archive File) hadoop-mapreduce-client-core-3.3.4.jar (Java Archive File) hbase-0.92.1.jar (Java Archive File) hadoop-common-3.3.4.jar (Java Archive File) AN IDE(Integrated DEvelopment Environment) like Eclipse Click on the perspective menu in the menu bar and select Mapreduce as the perespective After installing successfully Hadoop, we have a directory structure as given below in the hadoop-3.2.1 directory Eclipse IDE Setup and initialization Configuration The binary executables to start the name node, data nodes, mapreduce sites,...
Read more

Starting with Apache Hadoop

-
Image
Starting with Apache Hadoop In Hadoop, a single master is managing many slaves The master node consists of a JobTracker , Tasktracker , NameNode , and DataNode . A slave or worker node acts as both DataNode and TaskTracker though it is possible to have data-only worker node, and compute-only workerNodes. NameNode holds the file system metadata. The files are broken up and spread over the DataNode and JobTracker schedules and the manager's job. The TaskTracker executes the individual map and reduced function. If a machine fails, Hadoop continues to operate the cluster by shifting work to the remaining machines. The input file, which resides on a distributed file system throughout the cluster, is split into even-sized chunks replicated for fault tolerance. Haddopp divides each map to reduce jobs into a set of tasks. Each chunk of input is processed by a map task, which outputs a list of key-value pairs. In Hadoop, the shuffle phase o...
Read more