IPv4 Vs IPv6

In earlier presentations I have explained about the IPv6 features and the protocol working. In this video I have tried to consolidate the differences between Internet protocol version 4 and Internet protocol version 6. The first and foremost difference for which the IPv6 protocol was invented is the address length. IPv4 uses 32bit address while IPv6 uses 128bit address… that’s 4 times more bits and exponentially more number of addresses. The other features with IPv6 include fixed header size which makes routing easy and fast, stateless auto-configuration and making IP header simple but still feature rich and expandable. Following table shows main differences… and more differences in the video.

IPv6-101 video series on SecurityTube.net will start with the basic introduction to IPv6 protocol. This video series will serve as a IPv6 tutorial for beginners and will help as a quick reference for advanced users. I will try to add more and more practical examples and real life scenarios in IPv6 tutorial video series along with the theoretical explanation.

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IPv4 IPv6 Source and destination address are 32bit or 4Bytes Source and Destination addresses are 128bit or 16Byte Header includes checksum Header does not include checksum Header includes options All optional data in moved to IPv6 extension headers Broadcast addresses are used to send packets to all nodes on a subnet No Broadcast addresses. Instead link-local scope all-nodes multicast address is used. Manual or DHCP based IP configuration No need of manual or DHCP configuration. Nodes are capable of auto-configuration

Amit Vartak, 27 is working in wired and wireless security fields since last 3-4 years. His current area of interest includes IEEE 802.11 (Wi-Fi) suite of protocols, vulnerabilities in these protocols and countermeasure for those vulnerabilities. Working on cutting edge tools and technology always keeps him busy. He has contributed from concept level to final prototyping for the presentations in Defcon 2007 (The Emperor Has No Cloak - WEP Cloaking Exposed) and Toorcon 2007 (Caffe latte attack). He holds 2 patents with USPTO (current status: Patent Pending) and a few papers in IEEE journals on wireless protocol vulnerabilities. Prior to this, he was working on MEMS (Micro Electro Mechanical Systems) and has published a few papers in SPIE and ICMAT. (Yeah… kindda orthogonal fields… but technology really doesn’t limit the talent :) He did his masters in Electrical Engineering from one of the premier institutes in India, Indian Institute of Technology, Bombay (IIT-Bombay) and his under graduation, from University of Mumbai in Electronics and Telecommunication Engineering. He is currently working with AirTight Networks Inc. as a team lead in technology group since last 3 years.You can get in touch with him at amitcv[at]gmail[dot]com