A firewall is a method designed to prevent unauthorized access to or from a private network. The database firewalls can be applied to both hardware and software, or an arrangement of both.
Database firewalls are often used to thwart unauthorized Internet users from accessing the private networks joined to the Internet, particularly intranets. All messages incoming or outgoing the intranet pass through the firewall, which inspects every message and blocks the ones that do not fulfill the specific security criterion.
The key features of the firewall protection comprise the following:
- Varied degree of protection based on the location of the computer
When your system joins a network, the firewall applies a level of security in harmony with the type of network. If you feel like changing the security level allocated, at first, it is possible to do so at any time in the firewall settings.
- Security of wireless networks (Wi-Fi)
This blocks invasion trials instigated through wireless networks (Wi-Fi). When an intruder tries to access, a pop-up warning is presented that permits you to instantaneously block the attack.
- Right to use the network and the Internet
It states that which programs installed on your computer can have the right to use the network or the Internet.
- Security against intruders
It thwarts hacker attacks that attempt to access your system to perform certain actions.
With a firewall, it is possible to prevent the access of the programs that you state must not be able to access the Internet or the local network. It can also block access from other computer systems that make an attempt to connect to programs installed on your system.
- Description of rules
It refers to the practices that you can employ to state which links you want to permit and the ports and zones through which the link can be created.