Network Security

Network Security

1. Firewall

   • Firewall decides what files can come in
     • Locking out unathorised personals or viruses that could be considered malicious
   • Used to protect a computer network from intruders

2. Anti-virus

   • Anti-virus should always be up to date on your computer, your computer can always be free from viruses
     • Viruses such as the Trojan horse, the zombie and the worm
     • Set a date and time whether its weekly, monthly or yearly, so the anti-virus will check your computer periodically
   • You need to know and control which programs can and send and receive data
     • If you know what is sending and receiving your information, you can stay safe
       • If someone you don't know receives your data package they could do something with your information
   • Not using anti-virus for school could lead to you getting worms and other viruses that could delete your work
   • Not using it for your house means that people could access and delete your data
   • Same could be said for your job, not using anti-virus could lead to terrible things
   • Anti-virus, once it has scanned your data, will find and quarantine unauthorised personals

3. Password

   • A password should always have six plus characters if you're under 12
     • If you're over 12 your password should contain over eight characters
   • Passwords should always include lower and upper case letters, numbers and symbols
     • Better known as an alpha numeric mix
   • A password should never contain a pattern or rhythm as if allows easier access
     • Passwords should not contain patterns, e.g. lollollol

4. Encryption

   • Encryption allows people to send secret messages to others without anyone else knowing what it says
     • It was created by Alan Turing during the second world war
   • You need to firstly create a cryptography, a key that both parties know
   • To decrypt an encryption you need a cipher
   • Encryption is used during wars and battles, so the opposing teasm doesn't understand the messages
   • You can tell if a website uses encryption if it has a padlock and says https:// in green
     • But not all websites have the padlock and https:// in green because you don't need to log into them
       • For example, you don't need to login to a news website