1. Networking Network Classification, by there: 3 Security And Communications software

2. Network Security 1Usernames & passwords Characteristics of good usernames & passwords At least 8 characters and mixed case with combination of letters, digits, words Don’t share passwords Don’t write passwords down & change frequently

3. Network Security, Firewalls Firewall, hardware and/or software restricting access to data and information on a network Because internet is a public network anyone with connection can access internet Firewall separates the internet & other external networks from internal LAN To implement a firewall, a proxy server is used to control which communication passes into the company’s network. A server can use one of 1024 ports available

4. Network Security, Biometrics Biometric device: Authenticates a person’s identity by verifying personal characteristics Eg. fingerprints, hand geometry, facial features, voice and retinal or iris patterns Advantages: People are unique and therefore high level of security Depending on type of device can be costly

5. Network Security, Wireless Wireless networks provide additional risk allowing free internet access or to steal data War driving, technique to locate vulnerable Wi-Fi networks Strategies Wi-Fi network should include a firewall and use wireless security standards WAP configured so it does not broadcast network name & only allow access to specified devices Use WEP, (Wireless Equivalent Privacy)

6. Communications Software Software to support file transfer, File Transfer Protocol, (FTP); allows uploading and downloading of files to and from webserver