(OK) shell script—Find a Rogue DHCP Server—tcpdump/dhclient—nmap

1360阅读　0评论2016-01-25　ztguang
分类：LINUX


# . find_rogue_dhcp.sh &


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  1. #! /bin/sh
  2. # tcpdump -i enp13s0 -nev udp port 68 >> /tmp/rogue 2>&1 &
  3. # touch /tmp/rogue_dhcp_ip
  4. # . find_rogue_dhcp.sh &

  6. while true
  7. do
  8. echo > /tmp/rogue
  9. dhclient -r
  10. dhclient >/dev/null 2>&1
  11. sleep 2
  12. grep '192.168' /tmp/rogue >> /tmp/rogue_dhcp_ip
  13. done


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