A firewall that is provided by software. It often refers to a personal firewall in a user's computer, but software firewalls may be installed in servers as well. Contrast with hardware firewall. See personal firewall.
"software firewall." YourDictionary, n.d. Web. 15 July 2018. <http://www.yourdictionary.com/software-firewall>.
software firewall. (n.d.). Retrieved July 15th, 2018, from http://www.yourdictionary.com/software-firewall