Networking - What is firewall?

What is firewall?

A firewall is a hardware or software installed to provide security to the private networks connected to the internet. They can be implemented in both hardware and software, or a combination of both. All data entering or leaving the Intranet passes through the firewall which allows only the data meeting the administrators’ rules to pass through it.
Networking - What are the types of firewalls?
What are the types of firewalls? - Packet Filtering Firewall:This type of Firewall detects packets and block unnecessary packets and makes network traffic release.........
Networking - Digital Signatures
Digital Signatures - Digital signature is an attachment to an electronic message used for security purpose..........
Networking - What is Ethernet technology?
What is Ethernet technology? - Ethernet technology is a high speed broadcast bus technology..........
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