Sometimes it can be very helpful if you can use a TCP dump. Of course, you can define a mirror port on the switch. Or use the Watchguard System Manager.
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- Start the Firebox System Manager
- Do an right mouse click in the Traffic Monitor section and choose Diagnostic Tasks …
- In the drop down menu you will find TCP Dump
- I recommend using the advanced options. This allows you to save the stream on your hard disk.
- Now you can open the stream, e.g. with wireshark.
- Start the Firebox System Manager
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