Network administrator interview questions
What is the difference between layer 2 and layer 3 in the OSI model? What is the difference between a hub, switch, and router? What is a VLAN? What is the difference between TCP and UDP? How do you distinguish a DNS problem from a network problem? W...
DOWNAD/Conficker Turns 1
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Kismet is an 802.11 layer2 wireless network detector, sniffer, and intrusion detection system. Kismet will work with any wireless card which supports raw monitoring (rfmon) mode, and (with appropriate hardware) can sniff 802.11b, 802.11a, 802.11g, ...
Talisker Computer Network Defence Operational Picture
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How They Hack Your Website: Overview of Common Techniques...
Online Privacy Test
Online test to control your Internet privacy and anonymity.
SecTools.Org Top Network Security Tools
For more than a decade, the has been cataloguing the network security community's favorite tools. In 2011 this site became much more dynamic, offering ratings, reviews, searching, sorting, and a . This site allows open source and commercial tools o...
How to Obscure Any URL
The URL (Universal Resource Locator) of the page you are now viewing is .