logging in or signing up packet sniffers chinmayzen Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 6552 Category: Education License: All Rights Reserved Like it (1) Dislike it (0) Added: July 29, 2008 This Presentation is Public Favorites: 2 Presentation Description No description available. Comments Posting comment... By: jaishreewankhede (20 month(s) ago) Send Saving..... Post Reply Close Saving..... Edit Comment Close By: anuja3 (34 month(s) ago) hi,i want this presentation ,so plz send it on my email id . my email email@example.com Saving..... Post Reply Close Saving..... Edit Comment Close By: rakeshmandya (39 month(s) ago) hello..i want this presentation.so kindly grant the permission or send it to my mail id.my is firstname.lastname@example.org Saving..... Post Reply Close Saving..... Edit Comment Close By: Rahul1230123 (39 month(s) ago) hie dis is rahul.. please make dis video download available..as i have liked dis paper presentation on PACKET SNIFFERS.. please do it..its a hearty request for you.. tk care.. have nice time.. Saving..... Post Reply Close Saving..... Edit Comment Close By: jjcomp (45 month(s) ago) please tell me how to download this presentation? Saving..... Post Reply Close Saving..... Edit Comment Close loading.... See all Premium member Presentation Transcript Slide 1: PACKET SNIFFER HARDIK SHAH 06BCE129 GUIDE : ANITHA MAM Slide 2: INDEX DEFINITION WHAT IS SNIFFERS USED FOR?? HOW DOES PACKET SNIFFER WORK?? What are the components of a packet sniffer?? How can I configure my local network to make sniffing harder? How can I detect a packet sniffer? How can I sniff a switched network? Sniffer Example Slide 3: Packet Sniffer Definition : • packet sniffer is a wire-tap devices that plugs into computer networks and eavesdrops on the network traffic, then decodes this traffic in a process called “ Protocol Analysis “ . Slide 4: What is sniffers used for? • Detection of clear-text passwords and usernames from the network. • Conversion of data to human readable format so that people can read the traffic. • Performance analysis to discover network bottlenecks. • Network intrusion detection in order to discover hackers Slide 5: How does Packet Sniffer work? • Ethernet hardware is built with a "filter" that ignores all traffic that doesn't belong to it. It does this by ignoring all frames whose MAC address doesn't match its own MAC. • A sniffing program turns off this filter, putting the Ethernet hardware into "promiscuous mode. Slide 6: What are the components of a packet sniffer? 1- Hardware : standard network adapters . 2- Capture Filter : This is the most important part . It captures the network traffic from the wire, filters it for the particular traffic you want, then stores the data in a buffer. 3- Buffers : used to store the frames captured by the Capture Filter . Slide 7: 4- Real-time analyzer: a module in the packet sniffer program used for traffic analysis and to sift the traffic for intrusion detection. 5- Decoder : "Protocol Analysis" . 6- Packet editing/transmission: Some products contain features that allow you to edit your own network packets and transmit them onto the network Slide 8: How can I configure my local network to make sniffing harder? • Replacing the hub with a switch will provide a simple, yet effective defence against casual sniffing. Is that enough ?What about kicking the switch from bridging to repeating mode? Slide 9: How can I detect a packet sniffer? • Ping method . • ARP method . • DNS method . Slide 10: How can I sniff a switched network? • switch jamming • ARP redirect • ICMP redirect Slide 11: Sniffer Example : Ethereal Features : 1- Available for UNIX and Windows. 2- Filter packets on many criteria 3- Search for packets using filters 4- Colorize packet display based on filters Slide 12: ? ? QUESTIONS ARE NOT ALLOWED…..:P You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.