1 Many corporate environments utilize proxies for outbound www traffic. Ports 80 and 443 will be blocked at the firewall from any internal workstations to the internet. Only by configuring their web browsers to utilize the proxy can users access web sites. What security advantages does this provide?

2 Explain the differences between a stateful and stateless firewall. Provide an example where stateful inspection is useful.

3 In what ways might a VPN be useful in a corporate environment?