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firewall can either be software-based or hardware-based and is used to help keep a network or device secure by blocking unauthorized traffic.

Symantec Endpoint Protection (SEP) provides anti-virus (AV), intrusion prevention (IPS), web browser protections, and client firewall for Windows; AV and IPS on Mac OSX; and AV on Linux computers.
Symantec Endpoint Protection (SEP) provides anti-virus (AV), intrusion prevention (IPS), web browser protections, and client firewall for Windows; AV and IPS on Mac OSX; and AV on Linux computers.
Firewalls are physical appliances that allow or block traffic into and out of a secured network.
Symantec Endpoint Protection (SEP) provides anti-virus (AV), intrusion prevention (IPS), web browser protections, and client firewall for Windows; AV and IPS on Mac OSX; and AV on Linux computers.