Dsniff contains several powerful new network tools, written for use in penetration testing. Arpredirect is a very effective way of sniffing traffic on a switch by forging arp replies. Findgw determines the local gateway of an unknown network via passive sniffing, which can be used in conjunction with arpredirect to intercept all outgoing traffic on a switch. Macof floods the network with random MAC addresses, causing some switches to fail in open repeating mode, facilitating sniffing. Dsniff is a simple password sniffer which parses passwords from many protocols, only saving the "interesting" bits. Mailsnarf is a fast and easy way to violate the Electronic Communications Privacy Act of 1986. Urlsnarf outputs all requested URL's from HTTP traffic. Webspy sends URLs sniffed from a client to your local Netscape browser for display, updated in real-time (as the target surfs, your browser surfs along with them, automagically).
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