This operations cost is one reason that we hear from customers about why they don't implement firewalls for some functions. Keeping firewall configurations up-to-date can be challenging, especially if you are managing host-based firewalls for large server farms where the number of servers is large and the pain of updating the rules is high.
Our mission at NetCitadel is to simplify firewall management so that companies don't have to choose whether or not to implement a firewall. Since Firewall Builder supports multiple firewall platforms including Linux iptables firewalls, companies can install a very capable firewall using standard PC hardware, often with hardware that costs less than $1,000.
Why do you think a large company might not install firewalls to protect critical resources?