Requests must filter through a router and firewall before they are permitted to reach the server. A router, a piece of hardware, works in conjunction with the firewall, a piece of software, to block and direct traffic coming to the server. The configuration begins by disallowing ALL traffic and then opens ports only when necessary to process acceptable data requests, such as retrieving web pages or sending customer requests to the bank.
Using the above technologies, your Internet Banking transactions are secure.