Hi. Could someone know these question?
Which of the following is a correct statement?
IPSec uses symmetrical keys.
TCP Sequence numbers protect against man-in-the-middle attacks
Port scans are of limited use in enumerating systems because they do not participate in authentication.
The nslookup utility can be used to obtain NetBIOS zone transfers.
TLS and Kerberos do not support mutual authentication.

Question

Hi. Could someone know these question?
Which of the following is a correct statement?
       IPSec uses symmetrical keys.
       TCP Sequence numbers protect against man-in-the-middle attacks
       Port scans are of limited use in enumerating systems because they do not participate in authentication.
       The nslookup utility can be used to obtain NetBIOS zone transfers.
       TLS and Kerberos do not support mutual authentication.

e.mccormick · Answer

Each one of these reference covers one of those topics: http://technet.microsoft.com/en-us/library/cc962028.aspx http://mathcs.slu.edu/~chambers/spring11/security/assignments/lab04.html http://www.sans.org/reading_room/whitepapers/auditing/port-scanning-techniques-defense_70 http://english.tebyan.net/newindex.aspx?pid=31159&BookID=23805&PageIndex=89&Language=3 http://www.kerberos.org/software/appskerberos.pdf With a simple search, you can find each item and simply answer the question. Or you can read a bit more and learn more.