From: Jason Brandt <jbrandt@fsmail.bradley.edu>
To: espeake@oreillyauto.com
Cc: "openldap-technical@OpenLDAP.org"
<openldap-technical@openldap.org>
Date: 09/23/2013 03:26 PM
Subject: Re: Access being denied.
OK. I tried removing the olcRootPW as suggested with the following ldifI hope this doesn't confuse you too much... First off... Your admin account
will be dn="cn=admin,dc=oreillyauto,dc=com", if you are talking about the
default admin account. You also want manage instead of write. I would
also recommend securing your admin account with access lists, only allowing
access from specific manager IP addresses. In order to restrict the
cn=admin account as I do below, you have to set the userPassword attribute
for the admin account, and blank the olcRootPW.
set admin password:
dn: cn=admin,dc=bradley,dc=edu
changeType: modify
add: userPassword
userPassword: {SSHA}<passwordhash>
blank old olcRootPW
dn: olcDatabase={1}hdb,cn=config
changetype: modify
delete: olcRootPW
This allows use of the normal authentication process and will look at your
access lists. Otherwise, it will always bypass access lists and use the
olcRootPW to authenticate.
Here's how I handle access restrictions, which I would suggest you
evaluate. This is a positive security model as well (meaning the default
action is deny), which I highly recommend (ie no one can access any field,
unless it's specifically defined). The downside to the positive security
model is that it's less flexible, you have to whitelist any new attributes
you wish users to access, but it provides you with the best security.
Another note in this, is that my user accounts are all shadowAccounts, and
setting shadowInactive to 1 disables the account. (handled by the 3rd
section with password fields).
Here is my access list in a template form:
dn: olcDatabase={1}hdb,cn=config
changetype: modify
replace: olcAccess
# limit access to directory manager to local host only and specific manager
ip's
olcAccess: to dn.base="cn=admin,dc=,dc="
by peername.ip=127.0.0.1 auth
by sockurl=ldapi:/// auth
by peername.ip=<manager IP> auth
by users none
by anonymous none
#Allow admin users full access to all attrs
#Allow OpenLDAP2 Sync User read access to all
#Everyone else, continue
olcAccess: to *
by peername.ip=172.16.0.0%255.255.0.0 dn="uid=adminuser,dc=,dc=" manage
by peername.ip=<secondary ldap server ip>
dn="uid=syncuser,ou=Service_Logins,dc=,dc=" read
by peername.ip=<third ldap server ip>
dn="uid=syncuser,ou=Service_Logins,dc=,dc=" read
by * break
#Handle password fields, for all possible entities. No further processing
for these attributes
olcAccess: to attrs=userPassword,shadowLastChange filter=
(&(objectClass=shadowAccount)(!(shadowInactive=1)))
by self =w
by sockurl=ldapi:/// auth
by peername.ip=172.16.0.0%255.255.0.0 auth
by peername.ip=127.0.0.1 group.exact="cn=localadmingroup,dc=,dc=" manage
by group.exact="cn=admingroup,dc=,dc=" write
by * none
#Specific processing for an Account
#Everyone else, continue
olcAccess: to attrs=attr1,attr2
by dn="uid=account1,ou=Service_Logins,dc=,dc=" read
by * break
#Specific processing for a Group
#Everyone else, continue
olcAccess: to attrs=attr3,attr4
by group.exact="cn=group1,out=Group,dc=,dc=" manage
by * break
#Handle SELF writable fields
#Everyone else, continue
olcAccess: to attrs=loginShell,mailRoutingAddress,additionalattrs
by self write
by * break
#Handle more restrictive fields
#Stop processing on match
olcAccess: to attrs=audio,attr5,attr6,attr7
filter=(&(matchTrue=1)(objectClass=Person))
by * none
#Handle Anonymous Allowed fields
#Stop Processing on Match
olcAccess: to attrs=attr8,attr9,attr10
by * read
#Handle User Allowed Fields
#Stop Processing on Match
olcAccess: to dn.subtree="dc=,dc=" attrs=audio
by users read
#Hide additional superuser accounts in directory
olcAccess: to attrs=entry filter=(|(ou=Service_Logins)(uid=logins))
by * none
#Allow access to specific objectclasses
olcAccess: to filter=(|
(objectClass=nisDomainObject)(objectClass=nisNetGroup)(objectClass=posixGroup)(objectClass=groupOfUniqueNames)(objectClass=organizationalUnit))
by * read
#Allow access to directory entries. Required to query directory when using
default deny policy
olcAccess: to dn.subtree="dc=,dc="
attrs=entry,objectClass
by * read
#Default Deny
olcAccess: to *
by * none
On Mon, Sep 23, 2013 at 12:08 PM, <espeake@oreillyauto.com> wrote:
I know this has to be super simple in what I am missing. My ldapadmin
account cannot write to the database due to insufficient privileges..
This
is the ACL part of the ldif file. Version 2.4.31 and this is from
olcDatabase={1}hdb.ldif
olcAccess: {0}to attrs=userPassword by
dn="uid=admin,dc=oreillyauto,dc=com"
wr
ite by anonymous auth by self write by * none
olcAccess: {1}to dn.subtree="" by * read
olcAccess: {2}to * by dn="uid=admin,dc=oreillyauto,dc=com" write by
dn="uid=ld
apadmin,ou=System,dc=oreillyauto,dc=com" write by * read
olcAccess: {2} for ldap admin actually be
'dn.base="uid=ldapadmin,ou-System, dc=<domain>,dc=com" write'?
Thanks
Eric Speake
Web Systems Administrator
O'Reilly Auto Parts
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file
The password is still there and the modify time stamp shows the time I
dn: olcDatabase={1}hdb,cn=config
changetype: modify
delete: olcRootPW
tried and the user that made the change. But it is still there. I did use
the admin user to make the change but I have been having the same issue
with other changes I have tried to make as well.
Thanks,
Eric Speake
Web Systems Administrator
O'Reilly Auto Parts
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