firecall

As a verb forecall

is to call in advance.

As a noun firecall is

a call of fire alarm to a fire station.

In computer security terms the difference between firewall and firecall

is that firewall is the software that monitors traffic in and out of a private network or a personal computer and allows or blocks such traffic depending on its perceived threat while firecall is a request for provision of emergency access to a computer system in order to fix a problem.

As nouns the difference between firewall and firecall

is that firewall is a fireproof barrier used to prevent the spread of fire between or through buildings, structures, electrical substation transformers, or within an aircraft or vehicle while firecall is a call of fire alarm to a fire station.

As a verb firewall

is to protect with a firewall.

As nouns the difference between fireball and firecall

is that fireball is a ball of fire while firecall is a call of fire alarm to a fire station.