Hi @antonioclj and @Rodrigo_Vieira_da_Co,
please try to open different browsers and login more often. I had some problems immediately after activating auth proxy on a Win 7 machine but I opened another browser, logged in and it worked.
It seems like Opera, Chrome and MS Browsers (IE, edge) use the same proxy config of Windows internet options. Firefox can use an own proxy setting. Use FQDN in proxy settings and check that DNS is fast on your proxy. Clients should use NethServer as DHCP and DNS.
Use dig nethserver.org
to check DNS response.
You may open a terminal and watch the log live with tail -f /var/log/cache.log
. This is also possible in web UI with log viewer. You should see a working auth after some errors:
2018/04/01 03:16:12 kid1| ERROR: Negotiate Authentication validating user. Result: {result=BH, notes={message: received type 1 NTLM token; }}
2018/04/01 03:16:51| negotiate_kerberos_auth: INFO: User markus@AD.CMB.LOCAL authenticated