[CentOS] Configure a local DNS caching nameserver: partial success

[Tom Brown]

>
> Now I'd like all the other machines on the network to use this local DNS 
> server instead of my ISP's DNS. First thing, I know Bind uses port 53, 
> so I take care to open that port on the server as well as on the other 
> machines in the network. Then, I try to use my local DNS server manually 
> on one of the machines, but I only get this :
>
>   

53 udp and tcp ?