Computer Software That Stops Unapproved Access
This page is the CodyCross answer for the clue below from Train Travel, Group 712, Puzzle 1 (Regional Routes).
Question is: Computer Software That Stops Unapproved Access
and the answer is: FIREWALL
Word Meaning:
FIREWALL — (architecture) A fireproof barrier used to prevent the spread of fire between or through buildings, structures, electrical substation transformers, or within an aircraft or vehicle.
Definitions from Wiktionary.