How to say "firewall" in Japanese

• ファイアウォールCommon
  nounThe common word for the computing sense: a security system that controls traffic between a network and the outside. Use this one whenever 'firewall' refers to protecting computers or networks.
  ファイアーウォールがインターネットの安全性あんぜんせいを保証ほしょうする。↗

  A firewall will guarantee Internet security.
• 防火壁ぼうかへき
  nounLiterally a wall built to keep fire from spreading through a building. It is the less common of the two, and for the computer sense ファイアウォール is the common word.

Use 「ファイアウォール」 for the computer-security sense of 'firewall'; 防火壁, the less common word, is the literal wall that stops a fire from spreading within a building.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• ファイアウォールfirewall
• 防火壁ぼうかへきfirewall