preventive measures 0f c0mputer virus(Firewall,antivirus software)
How to prevent computer viruses
·
Install a reliable antivirus program
·
Avoid suspicious websites.
·
Never Open Email Attachments Without Scanning Them
First.
·
Set up Automatic Scans
·
Stay Away From Cracked Software.
·
Install a Firewall
Firewall
A firewall is a system designed to
prevent unauthorized access to or
from a private network. Firewalls can be implemented in both hardware and software. Firewalls are
frequently used to prevent unauthorized Internet users from accessing private networks connected to the
Internet. All messages entering or leaving the intranet pass through the
firewall, which examines each message and blocks those that do not meet the
specified security criteria. Firewall is a network security system
that monitors and controls the incoming and outgoing network traffic based on
predetermined security rules.
Eg: Zone Alarm firewall,Shardaccess ,Mpssvc , Lptables ,Lpcop ,Shorewall
,Clear os ,pfSense
AntiVirus
Software
Anti-virus software is a program or set
of programs that are designed to prevent, search for, detect, and remove
software viruses, and other malicious software like worms, trojans, adware, and
more. These tools are critical for users to have installed and up-to-date
because a computer without anti-virus software installed will be infected
within minutes of connecting to the internet. There are several different
companies that build and offer anti-virus software and what each offers can
vary but all perform some basic functions:
- Scan
specific files or directories for any malware or known malicious patterns
- Allow
you to schedule scans to automatically run for you
- Allow
you to initiate a scan of a specific file or of your computer, or of a CD
or flash drive at any time.
- Remove
any malicious code detected –sometimes you will be notified of an
infection and asked if you want to clean the file, other programs will
automatically do this behind the scenes.
Eg Windows Defender, Norton
antivirus McAfee , avast,AVG.