Here’s the Answer to the Question posted on Facebook
Q. Users are reporting errors accessing some websites. You’ve verified that you can access getcertifiedgetahead.com but you are unable to access websites that require you to log on. What is the MOST likely problem?
A. TCP port 53 is blocked at the network firewall
B. UDP port 67 is blocked at the network firewall
C. TCP port 80 is blocked at the network firewall
D. TCP port 443 is blocked at the network firewall