Simple DNS

[Man-wai Chang]

>     I have bind 9 running now, but it does not fail over. Instead it acts as the DNS server for the LAN, serving up responses for any DNS query made to it by my LAN systems. I do not like the huge traffic is has over my meager connection. I also do not like the fact that it opens a lot of connections at one time through my LAN router (up to 200 at some times).

I googled "bind 9 limit number of connection", which found this link:

http://www.zytrax.com/books/dns/ch7/hkpng.html

tcp-clients

  tcp-clients number ;
  tcp-clients 20;

By default DNS uses UDP port 53 for queries but is defined to allow both 
TCP and UDP. The tcp-clients allows the user to define the maximum 
number of TCP connections to be supported. The BIND 9 default is 100. 
This statement may only be used in a global options clause.



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