A firewall is necessary because it blocks unauthorized access to private networks, safeguarding them from hackers, viruses and worms. A firewall works by monitoring all messages entering and leaving the intranet and rest... More »

Firewalls screen data coming in and out of computer networks, blocking unauthorized access and halting traffic from unsafe Internet sources. On shared networks, firewalls may automatically stop all traffic from an "infec... More »

Firewalls are important in preventing intrusion into a company’s network, but they also have downsides. Most notably, firewalls can diminish the performance of a network. Data packets entering and leaving the network hav... More »

A firewall can be a vital piece of network security that keeps hackers out of a computer system, but it can be complicated to set up properly. Firewalls are designed to scan any traffic that passes through them, allowing... More »

The Heartbleed bug is a flaw in OpenSSL encryption software that could allow hackers to access data on secure servers, including credit card or bank details, passwords and other sensitive personal information. It was ori... More »

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Users can secure a wireless network by encrypting it, using anti-virus, anti-spyware and firewall programming, changing the router's default name and password, and limiting access to the network. Network users also shoul... More »

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Restrict employee access on an intranet by using a combination of IP security tools, such as encryption, PIN numbers and firewall settings. Setting up specific access levels for employees can also restrict access from ce... More »

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