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Thread-Topic: <greeting> after sasl?
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From: "Kent Watsen" <kwatsen@juniper.net>
To: <beepwg@lists.beepcore.org>
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Subject: [BEEPwg] <greeting> after sasl?
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Sorry if this has been answered before, but my search through the
archives and other online resources did not provide a definitive
answer...

=20

Is another <greeting> exchange expected after the SASL profile is used
for authentication?  The spec implies there is a "tuning reset" after
each tuning profile is used and it implies that the SASL profile is a
tuning profile, but I can't find examples illustrating a new <greeting>
exchange either...

=20

It would be surprising for a server to advertise its "exchange" profiles
before the client has authenticated itself.  Not only does this
unnecessarily reveal information, but the server might want to select
which profiles to advertised based on the authorizations of the
authenticated client

=20

Thanks

Kent

=20

=20


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<body lang=3DEN-US link=3Dblue vlink=3Dpurple>

<div class=3DSection1>

<p class=3DMsoNormal style=3D'text-autospace:none'><font size=3D2 =
face=3D"Courier New"><span
style=3D'font-size:10.0pt;font-family:"Courier New"'>Sorry if this has =
been answered
before, but my search through the archives and other online resources =
did not
provide a definitive answer&#8230;<o:p></o:p></span></font></p>

<p class=3DMsoNormal style=3D'text-autospace:none'><font size=3D2 =
face=3D"Courier New"><span
style=3D'font-size:10.0pt;font-family:"Courier =
New"'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal style=3D'text-autospace:none'><font size=3D2 =
face=3D"Courier New"><span
style=3D'font-size:10.0pt;font-family:"Courier New"'>Is another =
&lt;greeting&gt;
exchange expected after the SASL profile is used for =
authentication?&nbsp; The spec
implies there is a &quot;tuning reset&quot; after each tuning profile is =
used
and it implies that the SASL profile is a tuning profile, but I can't =
find
examples illustrating a new &lt;greeting&gt; exchange =
either...<o:p></o:p></span></font></p>

<p class=3DMsoNormal style=3D'text-autospace:none'><font size=3D2 =
face=3D"Courier New"><span
style=3D'font-size:10.0pt;font-family:"Courier =
New"'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal style=3D'text-autospace:none'><font size=3D2 =
face=3D"Courier New"><span
style=3D'font-size:10.0pt;font-family:"Courier New"'>It would be =
surprising for a
server to advertise its &#8220;exchange&#8221; profiles before the =
client has
authenticated itself.&nbsp; Not only does this unnecessarily reveal =
information, but
the server might want to select which profiles to advertised based on =
the
authorizations of the authenticated client<o:p></o:p></span></font></p>

<p class=3DMsoNormal style=3D'text-autospace:none'><font size=3D2 =
face=3D"Courier New"><span
style=3D'font-size:10.0pt;font-family:"Courier =
New"'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal style=3D'text-autospace:none'><font size=3D2 =
face=3D"Courier New"><span
style=3D'font-size:10.0pt;font-family:"Courier =
New"'>Thanks<o:p></o:p></span></font></p>

<p class=3DMsoNormal style=3D'text-autospace:none'><st1:place =
w:st=3D"on"><st1:country-region
 w:st=3D"on"><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:10.0pt;
  font-family:"Courier =
New"'>Kent</span></font></st1:country-region></st1:place><font
size=3D2 face=3D"Courier New"><span =
style=3D'font-size:10.0pt;font-family:"Courier =
New"'><o:p></o:p></span></font></p>

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face=3D"Courier New"><span
style=3D'font-size:10.0pt;font-family:"Courier =
New"'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

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_______________________________________________
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From beepwg-bounces@dbc.mtview.ca.us Mon Oct 31 15:56:20 2005
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From: Marshall Rose <mrose@dbc.mtview.ca.us>
Subject: Re: [BEEPwg] <greeting> after sasl?
Date: Mon, 31 Oct 2005 12:52:26 -0800
To: Kent Watsen <kwatsen@juniper.net>
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> Sorry if this has been answered before, but my search through the =20
> archives and other online resources did not provide a definitive =20
> answer=85
>
>
>
> Is another <greeting> exchange expected after the SASL profile is =20
> used for authentication?  The spec implies there is a "tuning =20
> reset" after each tuning profile is used and it implies that the =20
> SASL profile is a tuning profile, but I can't find examples =20
> illustrating a new <greeting> exchange either...
>
>
>
> It would be surprising for a server to advertise its =93exchange=94 =20
> profiles before the client has authenticated itself.  Not only does =20
> this unnecessarily reveal information, but the server might want to =20
> select which profiles to advertised based on the authorizations of =20
> the authenticated client

authentication, per se, doesn't qualify as a tuning reset; however, =20
if the sasl method also involves additional security features, viz., =20
integrity/privacy, then that does get you a tuning reset.

/mtr


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