On Mon, 24 Aug 2009 21:52:13 +0200, Jakob Curdes <jc@xxxxxxxxxxxxxxx> wrote: >> Hi, >> I am in the market for a reverse proxy that does intelligent load >> balancing for DNS. I've used Squid for proxy before but have not been >> able to find any info on using it for DNS reverse proxy (or UDP, more >> generally) -- I've searched the website and list archives but wasn't >> able to find anything about this >> > Well, because this cannot work. Proxies are essentially protocol parsers > with a cache. Squid is a HTTP(S) proxy which knows nothing about the DNS > protocol. > Moreover, it knows nothing about UDP as transport. There are dedicated > DNS proxies and general DNS software with proxy capabilities but this is > out of the scope of this mailing list. > > Hope this helps, > Jakob Close. Squid contains an internal DNS client that knows all about how to query and _read_ DNS protocol and does cache it according to DNS standards. But does not relay any of its info to external programs. If we are to take a giant leap and assume he meant Squid caching IPs, identifying dead HTTP servers and routing around them to the working ones. Squid does do that. Amos
