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Last active August 6, 2026 14:30
nfdump Filter Syntax Cheatsheet

nfdump 1.8.x Filter Syntax Cheatsheet

This reference is derived from the 1.8.x filter grammar. Filters are supplied as the final nfdump argument or read from a file with -f filterfile.

nfdump -r flows 'proto tcp and dst port 443'
nfdump -r flows -f incident.filter