Firewall may refer to: Firewall (computing), a technological barrier designed to prevent unauthorized or unwanted communications between computer networks or hosts Firewall (construction), a barrier inside a building, designed to limit the spread of fire, heat and structural collapse Firewall (engine), the part of a vehicle that separates the engine compartment from the rest of the vehicle Firewall (physics), a hypothetical phenomenon where a freely falling observer spontaneously burns up at the horizon of a black hole Arts, entertainment, and media Music Firewall, an alias of British musician Lange (born 1974) "Firewall", a song by Steve Vai from the 2005 album Real Illusions: Reflections "Firewall", a song by Kompany from the 2019 extended play Metropolis Literature Firewall (Andy McNab novel), a Nick Stone adventure Firewall (Mankell novel), a 1998 novel by Henning Mankell, featuring Kurt Walland Film and television Firewall (film), a 2006 thriller film written by Joe Forte, starring Harrison Ford "Firewall" (Person of Interest), an episode of the American television drama series Person of Interest "Firewall", an episode from the Canadian computer animated series ReBoot Characters Firewall, a fictional character in the G.I. Joe universe See also Alberta Agenda, also known as the Alberta Firewall, a political proposal for the Canadian province firewalld, a firewall management tool for Linux operating systems Great Firewall, China's internet censorship firewall Chinese wall, a zone of non-communication between distinct sections of a business, in order to prevent conflicts of interest Personal firewall, a very popular form of firewall designed to protect personal computers Reredos, a short wall behind a fire in a traditional hearth Wall of Fire (disambiguation)