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The ______ command is used to setup, view, and modify packet filtering, network and port translation, and other packet mangling rules within 2.4 and later kernel.

Which of the following commands can typically be used to configure a kernel?

CORRECT TEXT
Which command prints or adjusts the current limits on resources available to the shell and to processes started by it, such as the maximum size of a core file or the
maximum number of processes running? (Please include the command only, without arguments or path.)

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For security reasons, the system administrator is setting up a log server. What file does the system administrator have to edit in order to have each machine send
log entries to the new log server?

Your gateway to the internet is using iptables and NAT to allow your private network to access the Internet. You’ve verified that the gateway is not set up to block
packets, but you need to verify that it is properly masquerading them. Which of the following commands would you use to look at your NAT tables?

Which of the following services is NOT usually protected via TCP wrappers?

CORRECT TEXT
You want to temporarily prevent users from logging in. Please complete the following command:
touch /etc/________

CORRECT TEXT
The _______ command is used to modify a user’s account information.

Your FTP server has been under attack, and the ISP of the attacker has been less than helpful in mitigating the attacks. So you decide that all connections from
that ISP (badguy.example.org) to your FTP server will be denied and sent a message. Which line in your /etc/hosts.allow will have the desired effect?

What command do you use to generate an OpenSSH host key?