Does firewall has an "expiration date"?
Just like many items from the supermarket, your firewall also has an expiration date. The average lifespan of a firewall is between 3 and 5 years. Most firewalls available in retail stores have a slightly shorter lifespan than a professional-grade firewall. However, firewalls can sometimes last longer than specified if they are regularly maintained, like a car! But how do you "maintain" a firewall so that it lasts longer than its expiration date?
