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2. Comparison of firewalls - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_firewalls

   firewall distribution pfSense: Apache 2.0 / Proprietary (Plus) Free / Paid FreeBSD-based appliance firewall distribution Zeroshell: GPL: Free / Paid Linux/NanoBSD-based appliance firewall distribution SmoothWall: GPL: Free / Paid Linux-based appliance embedded firewall distribution IPFire: GPL: Free (Donations welcomed) Linux-based appliance

3. Next-generation firewall - Wikipedia

   en.wikipedia.org/wiki/Next-generation_firewall

   A next-generation firewall (NGFW) is a part of the third generation of firewall technology, combining a conventional firewall with other network device filtering functions, such as an application firewall using in-line deep packet inspection (DPI) and an intrusion prevention system (IPS).

4. Context-based access control - Wikipedia

   en.wikipedia.org/wiki/Context-based_access_control

   Context-based access control (CBAC) is a feature of firewall software, which intelligently filters TCP and UDP packets based on application layer protocol session information. It can be used for intranets, extranets and internets. [1]

5. Firewall (computing) - Wikipedia

   en.wikipedia.org/wiki/Firewall_(computing)

   Firewall appliances may also offer non-firewall functionality, such as DHCP [11] [12] or VPN [13] services. Host-based firewalls are deployed directly on the host itself to control network traffic or other computing resources. [14] [15] This can be a daemon or service as a part of the operating system or an agent application for protection.

6. pfSense - Wikipedia

   en.wikipedia.org/wiki/PfSense

   pfSense is a firewall/router computer software distribution based on FreeBSD.The open source pfSense Community Edition (CE) and pfSense Plus is installed on a physical computer or a virtual machine to make a dedicated firewall/router for a network. [3]

7. 7 of the best VPNs that maintain a strict no-logging policy

   www.aol.com/7-best-vpns-maintain-strict...

   UPDATE: October 22, 2019, 12:21 p.m. EDT This story has been updated following news that a NordVPN server was hacked.A good VPN provides you with extra security when browsing online, watching ...