As multinationals, as well as large corporations, access data from remote locations on daily basis Firewall Monitoring and VPN Routing is very essential rather important.
A firewall is a part of a computer system or network that is designed to block unauthorized access while permitting authorized communications. It is a device or set of devices that is configured to permit or deny network transmissions based upon a set of rules and other criteria.
Firewalls can be implemented in either hardware or software, or a combination of both. These are frequently used to prevent unauthorized Internet users from accessing private networks connected to the Internet, especially intranet. All messages entering or leaving the intranet pass through the firewall, which inspects each message and blocks those that do not meet the specified security criteria.
As one can see how this firewall can help secure systems via the below diagram…
Types of firewall Techniques
- Packet filtering
- Application gateway
- Circuit level gateway
- Proxy server
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