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Kill an active TCP connection

Some notes on killing a TCP connection...

Info gathering

(remember to be root!)

  • lsof | awk '{ print $2; }' | sort -rn | uniq -c | sort -rn | head
    • lsof | grep <PID>
  • netstat -tonp
  • Killcx deps: libnet-rawip-perl libnet-pcap-perl libnetpacket-perl
  • tcpkill deps: dsniff

Motivations

CLOSE_WAIT related

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