We have a endian firewall setup on a Centos box for our company branch office. Now the problem is the following some sites eg. microsoft.com do not work when trying top open them up in browser, getting DNS error.
So what I did I switched off the firewall and still it did not work. Then I ssh'd into the firewall PC and tried to PING microsoft.com and I got
ping microsoft.com ping: unknown host microsoft.com
So I tried to PING using the IP
I got the following
ping 18.104.22.168; PING 22.214.171.124 (126.96.36.199) 56(84) bytes of data. and then it does nothing, I rebooted the PC and still nothing.