[lug] Quote of the Day

Nate Duehr nate at natetech.com
Wed Feb 7 01:18:23 MST 2001


On Wed, Jan 31, 2001 at 12:32:00AM -0700, Sean Reifschneider wrote:
> On Tue, Jan 30, 2001 at 06:38:49PM -0700, D. Stimits wrote:
> When people talk "connectionless", they typicly are talking about
> UDP something like DNS or NTP or DHCP.  A request is sent to a particular
> port on a remote box, and it uses the "source port" in the header to
> fashion a reponse.  Any retransmits are done by the application.

<MASTER CAUTION ILLUMINATED - Ding!  Blink, blink, blink...>

Um, DNS uses both UDP and TCP connections.  You gotta take that one out
of the analogy!  :P

<Pilot Acknowledgement - Master Caution Reset>

I've seen a lot of people open port 53 UDP-only for their nameserver and
wonder why things are not quite always working right...

-- 
Nate Duehr <nate at natetech.com>

GPG Key fingerprint = DCAF 2B9D CC9B 96FA 7A6D AAF4 2D61 77C5 7ECE C1D2
Public Key available upon request, or at wwwkeys.pgp.net and others.



More information about the LUG mailing list