[18947] in Kerberos_V5_Development
Re: How often does MIT krb5 request for KDC info through DNS?
daemon@ATHENA.MIT.EDU (David Woodhouse)
Tue Aug 5 12:04:08 2014
Message-ID: <1407254620.28796.31.camel@infradead.org>
From: David Woodhouse <dwmw2@infradead.org>
To: Nico Williams <nico@cryptonector.com>
Date: Tue, 05 Aug 2014 17:03:40 +0100
In-Reply-To: <20140805155340.GB23175@localhost>
Mime-Version: 1.0
Cc: krbdev@mit.edu
Content-Type: multipart/mixed; boundary="===============1104562354=="
Errors-To: krbdev-bounces@mit.edu
--===============1104562354==
Content-Type: multipart/signed; micalg="sha-1";
protocol="application/x-pkcs7-signature";
boundary="=-9Tvjv/yWBI+6EjD/YDp7"
--=-9Tvjv/yWBI+6EjD/YDp7
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
On Tue, 2014-08-05 at 10:53 -0500, Nico Williams wrote:
>=20
> As for JGSS performance, there are worse problems:
>=20
> - non-caching of some tickets
>=20
> - delegating credentials by default in the HTTP/Negotiate stack
> (forwarded tickets are generally not cached on the client side)
>=20
> - doing an HTTP request w/o authentication every time, thus getting a
> 401 then trying again with Kerberos
>=20
> - servlets that don't use cookies to optimize away the GSS context
> setup per-request(!!!)
- On IIS, failing to set the 'AuthPersistNonNTLM' attribute which makes
Kerberos authentication a per-connection thing instead of per-request
http://blogs.msdn.com/b/benjaminperkins/archive/2011/10/31/kerberos-authper=
sistnonntlm-authentication-request-based-vs-session-based-authentication.as=
px
--=20
dwmw2
--=-9Tvjv/yWBI+6EjD/YDp7
Content-Type: application/x-pkcs7-signature; name="smime.p7s"
Content-Disposition: attachment; filename="smime.p7s"
Content-Transfer-Encoding: base64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--=-9Tvjv/yWBI+6EjD/YDp7--
--===============1104562354==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
krbdev mailing list krbdev@mit.edu
https://mailman.mit.edu/mailman/listinfo/krbdev
--===============1104562354==--
