Search Results

You can use try TraffPro for that. In case you use the free version, you can prioritize ports but you need to use a shaper with it.

Assuming you have a caching nameserver, as said above use dig
Test your nameserver using host or dig and querying redhat.com
)

From the above dig query you can see it took 42 msec to receive...

you can try using traffpro (http://en.traffpro.ru).

It has a good logging system and you can easily control whoi logs in and who logs out of your network using a graphical monitoring system.