GIAC Systems and Network Auditor (GSNA): GSNA

Correct Answer:

The steps to display the status of Windows Firewall are as follows: 1.Click the Start button, then click Control Panel.

2.In the Control Panel window, click Security.

3.In the Security window, click Windows Firewall.

4.The Windows Firewall dialog box appears, displaying the status of Windows Firewall.

Correct Answer: history !user

Here, you will use the history !user command to search the most recent command that starts with the string 'user'. In the bash shell, the history command is used to view the recently executed commands. History is on by default. A user can turn off history using the command set +o history and turn it on using set -o history. An environment variable HISTSIZE is used to inform bash about how many history lines should be kept. The following commands are frequently used to view and manipulate history:

Correct Answer: BCD

A proxy server is a very important element for firewall applications. The services that it provides are as follows:

Hide network resources: Proxy replaces the network IP address with a single IP address. Multiple systems can use a single IP address.

Logging: A proxy server can log incoming and outgoing access, allowing a user to see every possible details of successful and failed connections.

Cache: A proxy server can save information obtained from the Internet. It regularly updates these copies and automatically shows these pages, and will thus not need to access the Internet to view them.