On 22/05/12 03:26, Quanah Gibson-Mount wrote:
--On Monday, May 21, 2012 11:42 AM +0100 Tim Watts <[email protected]> wrote:
Hi,
I'm having a problem with a new LDAP server (slapd 2.4.23-7.2)
I'd like to have root@localhost be able to perform "manage" operations on
the slapd on the localhost *only* - all other ACLs would be pretty
standard.
The machine itself is considered secure.
Ideally, I'd like to do this with a mode(600) Unix Domain Socket owned by
root.
How do you enable an "manage" ACL for the entire DN if and only if the
access comes via the unix socket?
olcAccess: {0}to attrs=userPassword,shadowLastChange by self write by
anonymous auth by dn="cn=admin,dc=cch,dc=kcl,dc=ac,dc=uk" write by * none
This says "self" can write to these attributes, regardless of origination
This says "anonymous" can access these when authenticating
This says the user "cn=admin..." can write to these attributes
olcAccess: {1}to dn.base="" by * read
This says anyone can read the base
olcAccess: {2}to * by peername.regex=127\.0\.0\.1 manage ###<<< Added
This is garbage because you unnecessarily escaped the periods. Also,
there is no need to use a regex, since you are being exact.
olcAccess: {3}to * by self write by
dn="cn=admin,dc=cch,dc=kcl,dc=ac,dc=uk" write by * read
This ACL will never be evaluated because the ACL prior to this already
references "*".
My *guess* at what you are trying to do above would be:
olcAccess: {2}to * by self write by
dn="cn=admin,dc=cch,dc=kcl,dc=ac,dc=uk" write by peername.ip=127.0.0.1
manage by peername.ip=::1 manage by * read
However, this still isn't what you want, because that isn't restricting
by domain socket. As noted in the slapd.access man page, if you want to
limit by domain socket, you need to use the "path" prefix. I.e.
peername.path=/path/to/socket
for example:
peername.path="/var/run/ldapi"
Hi Quanah,
Just to confirm, I combined your suggestions into
olcAccess: {2}to * by self write by
dn="cn=admin,dc=dighum,dc=kcl,dc=ac,dc=uk" manage by
peername.path="/var/run/ldap/ldapi" manage by * read
and did a chmod 750 /var/run/slapd (which is where the actual socket
lives, being Debian, the /var/run/ldap/ldapi path above being a symlink
to this.
Seems to work wonderfully - few more tests, but once again thanks for
all your excellent help :)
Tim
--
Tim Watts
Personal Blog: http://www.dionic.net/tim/
