Learn how to say Firewalled correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word firewall:
a wall or partition designed to inhibit or prevent the spread of fire.
Computing a part of a computer system or network which is designed to block unauthorized access while permitting outward communication.
another term for Chinese wall.
[with object] Computing
protect (a network or system) from unauthorized access with a firewall:
(as adjective firewalled)
a firewalled network
(as noun firewalling)
our security products offer integral firewalling