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2.2.2 Data Protection (Software firewalls
A software firewall is a…
2.2.2 Data Protection
There are number of approach that we can take to protect our data.
Software firewalls, biometrics and smart cards, data backups and data encryption are some of the approaches that we can take to protect our data.
Software firewalls
A software firewall is a program that runs on a computer to allow or deny traffic between the computer and other computers to which it is connected.
The software firewall applies a set of rules to data transmissions through inspection and filtering of data packets. Windows Firewall is an example of a software firewall.
It is installed by default when the OS is installed.
Every communication using TCP/IP is associated with a port number.
HTTP, for instance, uses port 80 by default.
A software firewall, is capable of protecting a computer from intrusion through data ports.
To disable ports with the Windows Firewall in Windows 7, follow these steps:
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Step 2. In the left pane, choose to configure either Inbound Rules or Outbound Rules in the left pane and click New Rule… in the right pane.
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Step 5. Choose All local ports or Specific local ports to define individual ports or a port range and click Next.
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Biometrics and Smart Cards
Biometric security compares physical characteristics against stored profiles to authenticate people.
A profile is a data file containing known characteristics of an individual. A fingerprint, a face pattern, or retina scan are all examples of biometric data.
Biometric devices, which measure physical information about a user, are ideal for highly secure areas when combined with a secondary security measure such as a password or pin.
However, for most small organizations, this type of solution is too expensive.
A smart card is a small plastic card, about the size of a credit card, with a small chip embedded in it.
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Data Backups
A data backup stores a copy of the information on a computer to removable backup media that can be kept in a safe place.
Backing up data is one of the most effective ways of protecting against data loss.
Data can be lost or damaged in circumstances such as theft, equipment failure, or a disaster.
If the computer hardware fails, the data can be restored from the backup to functional hardware.
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Data Encryption
Encryption is often used to protect data.
Encryption is where data is transformed using a complicated algorithm to make it unreadable.
A special key must be used to return the unreadable information back into readable data.
Software programs are used to encrypt files, folders, and even entire drives.
To encrypt data using EFS, follow these steps:
Step 1
Select one or more file or folders
Step 2
Right-click the selected data>properties
Step 3
Click
Advanced
Step 4
Select the encrypt contents to secure data check box
Step 5
File and folders that have been encrypted with
EPS are displayed in green