Network sercurity

Network sercurity

1. Encrytion

   • Image result for encryptioncomputer.howstuffworks.com Encryption is the most effective way to achieve data security. To read an encrypted file, you must have access to a secret key or password that enables you to decrypt it. Unencrypted data is called plain text ; encrypted data is referred to as cipher text.

2. Firewall

   • A firewall is a network security system designed to prevent unauthorized access to or from a private network. Firewalls can be implemented as both hardware and software, or a combination of both. Network firewalls are frequently used to prevent unauthorized Internet users from accessing private networks connected to the Internet, especially intranets.blocks those that do not meet the specified security criteria.
   • usedto help to protect a computer network

3. Passwords

   • A password is a secret word or phrase that must be used to gain access. If you do not know the password it wont let you into it.