Purpose of Antivirus & Firewall

[MaskedUser]

Antivirus is used to cross check/scan signatures by Developer of media/file/executable if it match then AV bypass that app to next step or if file scanned is found having some other signature then it is sent to vault & submitted for further analysis via AV company.

Firewall are of two types Software & Hardware :
Firewall is used to detect & protect data packets transferred between client & server ie :
IDS Intrusion Detection System
IPS Intrusion Prevention System

First action of a Firewall is to detect data packets with TCP {Transmission Control Protocol} flags ie Syn ack fin rst push via its subsidairies HIDS {Host Based Intustion Detection System} NIDS {Network Based Intrusion Detection System}

Secondly if data packet is detected as false then it will be transferred to IPS & analysed via its subsidiaries ie HIPS {Host Based Intrusion prevention System} NIPS {Network Based Intrusion Prevention System}.

FIPS {Federal Law Based Intrusion Prevention System} is only used in a stateful firewall which is used in Govt Agencies .