noun
packet filtering
Technical term in networking; refers to the process of controlling network access by analyzing incoming and outgoing packets and deciding whether to allow or block them based on predefined rules.
ファイアウォールはパケットフィルタリングによって不正なアクセスを防ぐ。
A firewall prevents unauthorized access through packet filtering.
Variant with interpunct; less common but seen in technical writing.
Borrowed from English 'packet filtering'.