Internet Worm IP Scanning Programming (2)

Internet Worm IP Scanning programming Part-2 will look at Sequential scanning - increment IP addresses from an initial seed value and Subnet Scanning - detect subnet using the host IP address and netmask, then scan for all computers in the subnet. Interestingly, Subnet detection is a clever way of finding other victims very fast as the probability of another unpatched computer on the same LAN is actually very high. Most worms in the wild use a combination of many of the scanning techniques which we have discussed in this video tutorial series.

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Links:

1. Internet and Computer Worms

2. Analysis of the Blaster worm

3. Morris Internet Worm (First Internet Worm)

Vivek Ramachandran is a security evangelist and has been working in computer security related fields for the past 7 years. In 2007, Vivek spoke at world renowned conferences Defcon (WEP Cloaking Exposed) and Toorcon (The Caffe Latte Attack). The discovery of the Caffe Latte Attack was covered by CBS5 news, BBC online, Network World etc news agencies.In 2006, Vivek was announced as one of winners of the Microsoft Security Shootout contest held in India among 65,000 participants. He has also been a recipient of a Team Achievement at Cisco Systems for his work on 802.1x and Port Security modules on the Catalyst 6500 switches. Currently he spends all of his time maintaining Security- Freak.Net , SecurityTube.Net and is the founder of an online startup (currently in stealth mode). Vivek, is a Bachelor in Electronics and Communications Engineering from the prestigious Indian Institute of Technology, Guwahati.You can contact him at vivek[at]securitytube.net