A firewall is just hardware system or a software application that limits outside community use of a regional or PC community by reducing or preventing network ports.

Firewalls are an excellent action for helping avoid unauthorized use of a home or company network.

The image can be an Example of the hardware firewall, the ZyXEL ZyWALL a Single Security Gateway having other security features and a Firewall.

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Christopher Latham Sholes (February 14, 1819 – February 17, 1890) was an American inventor who invented the QWERTY keyboard and along with Frank Haven Hall, Samuel W. Soule, Carlos Gladden and John Pratt, has been contended as one of the …

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