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Infrastructure Security: System Hardening • Chapter 8 521

B. SMTP

C. PGP
D. SSL

12. Your company has decided to outsource part of its DNS services. Since the
old DNS servers will no longer need to be replicated to those outside the
firewall, they would like you to lock down the potential hole.What port and
protocol should be blocked on the firewall?
A. UDP 53
B. TCP 79

C. TCP 110
D. 53 TCP

13. Monday morning has brought news that your company’s e-mail has been
blacklisted by many ISP’s. Somehow your e-mail servers were used to spread
spam.What most likely went wrong?
A. An insecure email account was hacked

B. Sendmail vulnerability
C. Open mail relay
D. Port 25 was left open

14. Management was rather upset to find out that someone has been hosting a
music file transfer site on one of your servers. Internal employees have been
ruled out as it appears it was an outsider.What most likely went wrong?

A. Anonymous access
B. No Web access control
C. No SSL
D. No bandwidth controls

15. Someone played a bad joke on your company.Visitors accessing the Web site
were redirected to your competitors Uniform Resource Locator (URL). Can
you describe what the attackers did?

www.syngress.com