what is the difference between firewall and antivirus?
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Answer Posted / aarti soni
Firewall and antivirus software are two fundamentally different and complementary kinds of security applications.
Firewall :
Also known as a 'packet filter'. Basically, software which monitors network traffic and connection attempts into and out of a network or computer and determines whether or not to allow it to pass. Depending on the sophistication, this can be limited to simple IP/port combinations or do full content-aware scans.
A firewall can be thought of as a screen or sieve that categorically strains out potentially harmful data.
Antivirus:
A software which will find programs/files/software/etc that might compromise your computer, either by being executable or by exploiting a vulnerability in the program normally supposed to process them -- Rootkits, trojans, or other types of malware.
It detects these kinds of harmful programs that are already installed on your computer or about to be installed.
It can perform various protective measures (based on the security settings in the Anti-virus software) such as quarantine, permanent removal, fix, etc.,
It will also look for potentially harmful files that are downloaded from the internet or attached to an email and notifies/removes it to protect your computer.
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