Date: Sun, 13 Jun 1999 14:24:50 -0500 (CDT) From: Jay Nelson <jdn@acp.qiv.com> To: "Ed P." <secure@r0ck.com> Cc: security@FreeBSD.ORG Subject: Re: Fwd: [linux-security] Re: Port 7 scan Message-ID: <Pine.BSF.4.05.9906131348450.801-100000@acp.qiv.com> In-Reply-To: <99061312495500.02641@MOLTEN.R0CK.COM>
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This explains what is going on. Thank you. It does, though, raise a couple of other questions: The echo service is, AFIK, a peculiarly Unix service. Why do you suppose they chose echo for the latency test as opposed to a simple ping? Nearly everything with an ethernet card will respond to a ping returning, I would think, more useful latency information than a refused connect. Since echo is Unixcentric and most new admins leave echo open, echo will reveal far more about a machine than a ping. Could it be that this is the intent? Sorry for the paranoia. -- Jay [snip] > In the course of determining the best suited POP, Global Dispatch preforms > a latency measurement. This latency measurement is done by making a > connection to the client DNS server on TCP port 7 and then dropping > the connection. > > After the latency measurement has been done, the latency values are > cached, and the IP of the most responsive POP is returned to the > requesting machine. > > I hope this help clear up the confusion. We are looking into other ways to > preform this latency mesurment, and hope we have not caused you any > inconvenience. > > -- > Resonate Technical Support <support@resonate.com> > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > Richard Day Call Center Manager > > Resonate, Inc. > 465 Fairchild Drive > Suite 115 > Mountain View, CA 94040 > > Main Phone 650 967.6500 > Fax 650 967.6561 > Support Line 650 967.4800 > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > >> Regards, >> Juha >> >> >> > >-- >---------------------------------------------------------------------- >Please refer to the information about this list as well as general >information about Linux security at http://www.aoy.com/Linux/Security. >---------------------------------------------------------------------- > >---///-///-///-/-//----///-///-/////--Ed Porter secure @ r0ck.com >--/---/-/-/---///-----/---/-/-/-/-/--1306 P R 820 Mingus TX 76463 >-/---///-///-/-//-//-///-///-/---/--254.968.5199 Fax 254.968.6504 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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