Electronic Record Keeping Systems What Kind Of Firewall Sytem Do Banks Use To Keep Information Safe?

What kind of firewall sytem do banks use to keep information safe? - electronic record keeping systems

I have discussed electronic health records, and always compare the banking system with hospitals. I do not say why we can not secure electronic patient records for hospitals, especially if the banks do every day? I only heard of the Citrix server security for governments and others, there are more companies make firewall systems for banking systems, credit cards, or any other system must be guaranteed 24 hours a day?