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Title: Google DNS Public Post by: ramonrocha on Friday 28 February 2014, 07:03:20 am Dear ,
How do I do to block Google DNS plublic? 8.8.8.8 8.8.4.4 4.4.4.4 some users are changing the dns to google and bypass HTTP proxy transparent. Title: Re: Google DNS Public Post by: dda on Friday 28 February 2014, 09:46:24 am You need to fix your windows security first of all. Then block 80 and 443 in the firewall to force them through the proxy.
Title: Re: Google DNS Public Post by: ramonrocha on Saturday 01 March 2014, 02:41:00 am Please, send more information about firewall rules to block 80 and 443 ports.
Title: Re: Google DNS Public Post by: dda on Sunday 02 March 2014, 12:55:02 am Ordinary users should not be able to change DNS. They are set as local Administrators and should not be. In the firewall section go to outgoing firewall and take the ticks off ports 80 and 443. Make sure Endian is the default gateway.
Title: Re: Google DNS Public Post by: dda on Sunday 02 March 2014, 03:24:51 am ...and put the proxy settings into internet explorer proxy settings.
Title: Re: Google DNS Public Post by: kieronrob on Wednesday 05 March 2014, 01:10:07 am You can also create outgoing firewall rules that block 8.8.8.8 and 8.8.4.4 thus preventing the users from using the google DNS servers.
Title: Re: Google DNS Public Post by: mmiat on Friday 07 March 2014, 11:27:45 pm block ANY dns request, port 53 tcp/udp, so they can use only internal dns
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