Taking a Capture from the F5

Let's take the information we have gathered so far and take a packet capture from the F5.

  1. Start Putty and launch the bigip01 SSH session.

  2. Login as root user. Password is 'admin.F5demo.com'.

  3. List the destination address of the virtual on the F5 using the following command:

  4. tmsh list ltm virtual all

    note there is a virtual server named LAMP with a destination ip address of

  5. Now take the destination IP address and compose a tcpdump command to track the traffic coming to this virtual server:

    tcpdump -nni 0.0:nnn -s0 -w /var/tmp/lamp.pcap host

  6. After starting the capture, start Chrome and access and refresh the screen a few times.

  7. Stop the capture in the putty session by using 'Ctrl+c'.

  8. Open WinSCP on the Windows jumpbox Desktop. Login to the BIG-IP and download the lamp.pcap file to the local box.

  9. Now open Wireshark and open the lamp.pcap file you just copied from the F5.