Does anyone remember in what precise Firewall-1 code version the fw monitor tool was introduced? The earliest reference I could find was version 4.0 here at @PhoneBoy's old Firewall-1 FAQ mailing list here:
https://phoneboy.com/fw1/faq/0410.html
However I have admittedly hazy memories of using it in 3.0b for some reason, perhaps it was around then but just not documented? This might be a question only Gil can answer. Thanks!
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