We are having an issue accessing sec.gov website, it seems to be hit or miss. No reports of any other websites not being accessible. Am pretty sure it is nothing on their side, but something in our DNS. We are able to get to the site if we connect to our external DSL line or I remote into my home machine. We are using MS DNS server on our domain controllers. OS = 2008r2. Below are the steps I have gone through, doing "ipconfig /flushdns" and "ipconfig /registerdns" after most steps:
Unable to ping sec.gov
Unable to ping sec.gov by IP - most likely have responses turned off
Added googles public dns as a forwarder on our DNS servers (with our ISP provided DNS servers) and moved it to top of the list.
Removed our ISPs provided DNS server and left just the google DNS server
Restart DNS server service
The below work, but are just work arounds not resolutions:
Statically set the DNS server in the NIC to googles public dns (22.214.171.124) and able to get out without issue.
Able to access the site by typing the IP address instead of the name
Any other assistance troubleshooting this would be great. Thanks ahead of time.