Using TCP for checking

Barry Margolin barmar at
Wed Apr 8 17:36:33 UTC 2009

In article <grgd4o$1vnv$1 at>,
 Ben Croswell <ben.croswell at> wrote:

> My one caution on this would be you may run into false negatives with TCP if
> people have misconfigured firewalls.
> It's surprising the number of people out there that believe TCP is only for
> xfers.

You'll also run into it for any domains hosted by Akamai.  Their custom 
servers don't currently support TCP at all.

Barry Margolin, barmar at
Arlington, MA
*** PLEASE don't copy me on replies, I'll read them in the group ***

More information about the bind-users mailing list