There was a problem, all pages loaded very long time, the Internet barely works, I feel that the problem with the dns. Network diagram this (user->domain controller (with dns server)->pfsense is also->Internet) the pings are normal, how to understand what's going on, any suggestions!
Slow loading pages and DNS related very poorly. Doubtful sounds.
Mikayla.Roh answered on July 2nd 19 at 14:31
Start with nslookup ya.ru X. X. X. x, where X. X. X. x is the IP of your DNS server
marques_Rutherford answered on July 2nd 19 at 14:33
1. ipconfig /all on the client machine experiencing the problem.
Find out the list of all received DNS servers
Test for accessibility and the passage of the request ( and response speed ) as prescribed
On domain machines DNS client needs to look only to the domain controllers.
2. Look at the DNS server on the domain controller :
logs with errors\warning-s server
- availability DNS servers registered in the network connection properties of a domain controller and the request flow to them from the domain controller
- DNS settings :
the availability of root hints
availability kondishn forwarders and forwarders if you have these in the server properties.
3. Performance and no errors in Active Directory service.