1. David Abarca, Instructor Del Mar College Computer Corner Free Security Solutions

2. Computer Corner Security Solutions Firewall Hardware & Software Proxy Firewalls

3. Computer Corner What does a Firewall do? Protects your computer and network by preventing unauthorized access to your computer or home network. Preventing unauthorized outgoing traffic Can prevent someone from exploiting a vulnerability in your computer’s Operating System or an applicaiton

4. Computer Corner How does a Firewall work? Uses a set of rules to allow or deny traffic Inspects the data coming into and leaving a network to see if it matches the rules Handles the data based on the rules

5. Computer Corner How does a Proxy work? Prevents outside network traffic from “touching” the inside network device. Acts like the waiter at a restaurant. You tell them what info you want and they get it for you. You don’t get to go into the kitchen and cook your own food

6. Computer Corner Free Firewall Applications Only run one software Firewall Zone Alarm http://www.zonelabs.com/store/content/company/products/znalm/freeDownload.jsp PC TOOLS Firewall Plus http://www.pctools.com/firewall/download/ Jetico http://www.jetico.com/index.htm#/jpfirewall.htm

7. Computer Corner For a copy of today’s presentation, please visit www.cbrsec.com and follow the KIIITV link Please email your questions to: David A. Abarca at dabarca@delmar.edu