Hello Dave,
Please take a look at the comment:
"Now, starting from take 73, we have made substantial changes to FW monitor. Together with performance optimizations we have also embedded new filtering abilities in FW monitor.
By using "-F" flag you can filter certain connection. For example, to filter a host with the IP “8.8.8.8” you should use: fw monitor -F "8.8.8.8,0,0,0,0" -F "0,0,8.8.8.8,0,0".
The syntax is simple. -F "{src IP}, {src port}, {dst IP},{dst port}, {protocol num}". “0” can be used as a wild card.
For more information about this check sk30583 ("what is FW monitor") "
If you still have a question, please provide more details about issue with "fw monitor", which you noticed
Regards,
Dmitry Krupnik