How to capture network packets with tcpdump during boot time

Updated -

Environment

  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • TCPDUMP

Resolution

o For RHEL5 and 6:

  • Add the tcpdump command to /etc/rc.d/rc3.d/S10network after esac to start a packet capture...

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