Smurf It’s a version of Denial of Service attack – floods the victim with spoofed broadcast pings. A large number of pings are sent to the IP broadcast address of the victim, it responds back with broadcast to all the hosts – and these hosts simultaneously reply – causing a major lock in the network. Ping of Death A funny ping – ICMP packet is sent to the victim – which floods its buffer, causing the system to reboot or the network getting hanged. ...
Yes, moved to Gandhinagar-Ahmedabad last week. Got admitted for the M.Tech. course at Gujarat Technological University, for specialization in IT Systems and Network Security. Instead of the conventional Computer Engineering Masters, I chose the special course for my passion, computer networks and security. Even the subjects are interesting, like Distributed and Cloud Computing, Grid Computing and Network Defense and Countermeasures. I am very excited to study these subjects. Last week passed with basics of Operating Systems and Object Oriented Designing. The institute uses OpenSuse 12.0 as their primary OS for the Labs. Object Oriented lectures were a revision of the fundamental concepts, as I am familiar with them because of the subjects like Object Oriented Concepts and Advanced Java Technology during my Bachelors. All the faculties are from CDAC-ACTS centers, veteran and expert in their fields. I am liking the environment and work culture at this college which needs full dedication, though it is somewhat strict. ...
SMDS, or Switched Multimegabit Data Service, has not yet gained significant market penetration, although it has begun to experience some growth. SMDS was viewed as a stepping stone to ATM, since some of the communications equipment and media are common to the two technologies. As SMDS is not available everywhere, and there is more interest in ATM, SMDS has had a hard time getting into the mainstream. SMDS does, however, have some penetration; if your long-distance carrier is MCI, you may have cause to use this technology. The attraction of SMDS is that it has the potential to provide high-speed, link-level connections (initially in the 1 to 34 Mbps range) with the economy of a shared public network, and exhibits many of the qualities of a LAN. ...
Hello you! Since 3 months I was preparing for the Network+ and CCNA certifications. I had planned to appear for the N+ after my final exams and CCNA after gaining some industrial experience with computer networks. Then I had a thought of appearing for the N+ during my reading vacations before the final exams – so as I can give my full time for job hunting after the university exams. And on 27th I went to the Pearson VUE Exam Centre, Baroda for my first networking certification exams. I was fully prepared for the exams – intense work for 1 week – from CBT Nuggets, Network+ Study Guide by Todd Lammle and my practical experience in the industry during my college projects. And my hard work showed the results – passed the exams with 790 marks! I am very glad to have such a glorious result in my first ever networking certification. Now eagerly waiting for the certification kit with hard copy of the certificate having my name printed on it! ...
As part of my college project work, I am developing a secure network at a medium sized office. Last week I completed the configuring of the wi-fi router with the normal protocols as well as some security features. Prior to developing the physical network, I tested the network with all its preferences in two different network simulators for its successful working (mainly for the IP address assigning). Let me describe you the techniques which I used in the router configuration – ...
What is HDLC? HDLC stands for High-Level Data Link Control protocol. Like the two other WAN protocols mentioned in this article, HDLC is a Layer 2 protocol. HDLC is a simple protocol used to connect point to point serial devices. For example, you have point to point leased line connecting two locations, in two different cities. HDLC would be the protocol with the least amount of configuration required to connect these two locations. HDLC would be running over the WAN, between the two locations. Each router would be de-encapsulating HDLC and turning dropping it off on the LAN. ...
Do you know about the Android App Inventor service by Google? (Yes, it was developed by Google, but they took back the support last month, and is now in the hands of Massachusetts Institute of Technology.) It allows anyone, including people unfamiliar with computer programming, to create software applications for the Android operating system (OS). It uses a graphical interface, very similar to Scratch and the StarLogo TNG user interface, that allows users to drag-and-drop visual objects to create an application that can run on the Android system, which runs on many mobile devices. ...