I would use ping, as there is no way I'm going to log pings because of the many DoS's out there with them. I allow pings to public DNS listed hosts, as it seems like general network courtesy to do so. But I don't put WinNT hosts outside the firewall with its history of pings of death, so you might have varied luck with pings for the distance measurement. I definately wouldn't probe a host with a TCP port though, as that just looks like a potential network / service probe. --Joshua David Lang wrote: > > -----BEGIN PGP SIGNED MESSAGE----- > > I am getting ready to setup the Global Dispatch at my site, I am currently > planning to use either ping or connection to port 53 for the distance > measurement, do you folks have a better suggestion ? > > David Lang > > On Fri, 11 Jun 1999, Pug Bainter wrote: > > > Date: Fri, 11 Jun 1999 14:15:46 -0500 > > From: Pug Bainter <[EMAIL PROTECTED]> > > To: Joshua Chamas <[EMAIL PROTECTED]>, Nevin Nobles <[EMAIL PROTECTED]>, > [EMAIL PROTECTED], > "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> > > Subject: Re: ? Global Dispatch use of TCP port 7 for geographical latency > measurement > > > > Joshua Chamas ([EMAIL PROTECTED]) said something that sounded like: > > > We are currently using the product GlobalDispatch from Resonate Inc. > > > for our Wide Area > > > Data Distribution. Please see letter below for a detail explaination on > > > this product. Thanks. > > > > I have heard the same thing from DoubleClick, and their ISP, over and > > over again. > > > > This has been occuring on a growing number of ports that they seem to > > use for their determination of the "best" server to serve me. The ports > > that they claim to use to date are HTTP, DNS (tcp) and ECHO. So far > > there has been one added a month to my filter lists from this annoying > > software and service. > > > > Ciao, > > > > -- > > Richard "Pug" Bainter | GlobeSet, Inc. > > System & Network Admin. Manager | 1250 S. Capital of Tx Hwy, 1-300 > > [EMAIL PROTECTED] | [EMAIL PROTECTED] | Austin, TX 78746 > > Note: The views may not reflect my employers, or even my own for that matter. > > - > > [To unsubscribe, send mail to [EMAIL PROTECTED] with > > "unsubscribe firewalls" in the body of the message.] > > > > "If users are made to understand that the system administrator's job is to > make computers run, and not to make them happy, they can, in fact, be made > happy most of the time. If users are allowed to believe that the system > administrator's job is to make them happy, they can, in fact, never be made > happy." > - -Paul Evans (as quoted by Barb Dijker in "Managing Support Staff", LISA '97) > > -----BEGIN PGP SIGNATURE----- > Version: PGP for Personal Privacy 5.0 > Charset: noconv > > iQEVAwUBN2SuyD7msCGEppcbAQEIhAgAyllkUrYytw+fxBchBzTFeyVOTcz7T3fQ > f0hsi/dAn8RV195zF5JmE7/+kj+/ByoKZLJT4fb/mP4ABnjan3Up3vAFzyINab6W > qlnIUmc96paIwHDrMa5tzUiNd+1LLpJjjj1bHRXXbiilWxpvL4TvkfJVIF6CMshu > hM8zRK2F0vxkJlYWS+oExkKuWGQ64aACB3jMMl1pB0hJ0mhdYCm/AiQk2YXCdHTv > swfA9aF76Gvr1Si0GZhUvAPznjdVbGyf3M+Avak1QXYyBJ2S7W9ZUz14AWB/ZwHs > GBm5GWjPPttk/oNes4T1wdzlvnEdTntk+JC179gB6Q+sLhM9W51FsQ== > =nsLr > -----END PGP SIGNATURE----- -- ___________________________________________________________________ Joshua Chamas Chamas Enterprises Inc. NODEWORKS - web link monitoring Long Beach, CA 1-562-432-2469 http://www.nodeworks.com http://www.chamas.com - [To unsubscribe, send mail to [EMAIL PROTECTED] with "unsubscribe firewalls" in the body of the message.]
