Complete interview.

[homepage.git] / blog / data / 2010-08-07-edu-autoconf.txt

diff --git a/blog/data/2010-08-07-edu-autoconf.txt b/blog/data/2010-08-07-edu-autoconf.txt
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--- a/blog/data/2010-08-07-edu-autoconf.txt
+++ b/blog/data/2010-08-07-edu-autoconf.txt
@@ -16,8 +16,9 @@ around it.  Now I am a huge step further along that road.</p>
 <p>With our current squeeze-test packages, I can select the roaming
 workstation profile and get a working laptop connecting to the
 university LDAP server for user and group and our active directory
-servers for Kerberos authentication.  My users home directory got a
-bookmark in the KDE menu to mount it via SMB, with the correct URL.
+servers for Kerberos authentication.  All this without any
+configuration at all during installation.  My users home directory got
+a bookmark in the KDE menu to mount it via SMB, with the correct URL.
 In short, openldap and sssd is correctly configured.  In addition to
 this, the client look for http://wpad/wpad.dat to configure a web
 proxy, and when it fail to find it no proxy settings are stored in
@@ -27,6 +28,15 @@ a proxy when at the university network.  If the machine is moved to a
 network with such wpad setup, it would automatically use it when DHCP
 gave it a IP address.</p>
 
+<p>The LDAP server is located using DNS, by first looking for the DNS
+entry ldap.$domain.  If this do not exist, it look for the
+_ldap._tcp.$domain SRV records and use the first one as the LDAP
+server.  Next, it connects to the LDAP server and search all
+namingContexts entries for posixAccount or posixGroup objects, and
+pick the first one as the LDAP base.  For Kerberos, a similar
+algorithm is used to locate the LDAP server, and the realm is the
+uppercase version of $domain.</p>
+
 <p>So, what is not working, you might ask.  SMB mounting my home
 directory do not work.  No idea why, but suspected the incorrect
 Kerberos settings in /etc/krb5.conf and /etc/samba/smb.conf might be