Network-security option . . . or what’s creating a barrier within four of this puzzle’s answers

This crossword clue is for the definition: Network-security option . . . or what’s creating a barrier within four of this puzzle’s answers.
it’s A 95 letters crossword puzzle definition.
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Possible Answers: FIREWALL.

Last seen on: The New Yorker Friday, April 14, 2023 Crossword Answers