What type of technique might be used by these offenders to access the Internet without restriction?

Neil is closely monitoring his firewall rules and logs on a regular basis. Some of the users have
complained to Neil that there are a few employees who are visiting offensive web site during work
hours, without any consideration for others. Neil knows that he has an up-to-date content filtering
system and such access should not be authorized. What type of technique might be used by these
offenders to access the Internet without restriction?

Neil is closely monitoring his firewall rules and logs on a regular basis. Some of the users have
complained to Neil that there are a few employees who are visiting offensive web site during work
hours, without any consideration for others. Neil knows that he has an up-to-date content filtering
system and such access should not be authorized. What type of technique might be used by these
offenders to access the Internet without restriction?

A.
They are using UDP that is always authorized at the firewall

B.
They are using HTTP tunneling software that allows them to communicate with protocols in a
way it was not intended

C.
They have been able to compromise the firewall, modify the rules, and give themselves proper
access

D.
They are using an older version of Internet Explorer that allow them to bypass the proxy server



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