These can be a real hurdle when setting up VoIP, help others by posting your configs, tips and tricks or simply ask others for help if you're stuck.

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By talk2me
#3619
Both are designed to protect your system from any outside/inside threat. A firewall's duty is to block unwanted network communications including outgoing ones. Antivirus deals with malicious programs that enter into a system and helps to eliminate them. Unscrupulous programmers always create new malicious programs or viruses. Hence regular updation is necessary for an antivirus package. Nowadays most of the antivirus programs are enabled for regular virus database updation.
By vinaya
#3633
To summarize, firewall is program that prevents unwanted outside communication on the system, and antivirus is a program to stop unwanted programs attacking the system. Now I understand actual function of firewall and antivirus. Thank you @nyteegeek and @talk2me

But I still have a question, like antivirus is there anything such as updating firewall? If yes, how often?

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