Tcpkill

Tcpkill is a network utility program that can be used to terminate connections to or from a particular host, network, port, or combination of all. These programs take standard Berkeley Packet Filter (BPF) filters. This can be used for both port mirroring and ARP spoofing.

Tcpkill is a network utility program that can be used to terminate connections to or from a particular host, network, port, or combination of all. These programs take standard Berkeley Packet Filter (BPF) filters. This can be used for both port mirroring and ARP spoofing. ==Examples== To prevent any connections to the host www.google.com use this command: /usr/sbin/tcpkill −9 host www.google.com The computer that is attempting to go to that site will be blocked from that site only, but can surf any other site. It is a good idea to either redirect the output into nothingness ( > 2>/dev/null 1>/dev/null) or into a file for later analysis (> file.tcpkill ). By default, it will redirect output to the console. More hosts can be specified with the command: /usr/sbin/tcpkill −9 host www.google.com and host www.yahoo.com To block well−known ports e.g., napster (port 8888 and port 6699) or gnutella (port 6346), the command: /usr/sbin/tcpkill −9 port 8888 and port 6699 or /usr/sbin/tcpkill −9 port 6346 ==Options== -i the -i option specify which interface you want the program to listen on. The default option interface on most computers is eth0, because most computers only have one interface. -1...9 The -1 to -9 specify the degree of brute force you want the attack to use on the target, with -1 being the least brute and -9 being the most brute. Computers on network with very fast connection usually require more brute force in order to successfully perform a DOS attack on them. Otherwise the command can be run without the -1 to -9 option or the -i option. This is a description of one of the various dsniff programs. This text belongs to the dsniff “README” written by the author Dug Song: See also: filesnarf macof [http://www.ouah.org/dsniffintr.htm, mailsnarf msfsnarf [http://www.ouah.org/dsniffintr.htm, sshmitm tcpnice [http://www.ouah.org/dsniffintr.htm, urlsnarf webmitm [http://www.ouah.org/dsniffintr.htm, webspy [http://www.ouah.org/dsniffintr.htm]. ==References== ==External links== Dsniff README file.

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