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With slapd.conf you could globally disable anonymous binding and require authentication with the following static directives:

disallow bind_anon
require authc

How can I achieve the same global settings, but using the new cn=config live configuration method?

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up vote 5 down vote accepted

Not that quanta's ACLs are a bad thing, but to answer your question:

dn: cn=config
changetype: modify
add: olcDisallows
olcDisallows: bind_anon

dn: olcDatabase={-1}frontend,cn=config
changetype: modify
add: olcRequires
olcRequires: authc

Please be aware that ldapmodify is sensitive to (trailing) spaces, so a straight copy paste won't work (and may not authenticate your properly either). Also, the dn you use will need write access to the cn=config db.

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Thanks! This is exactly what I was after. – Michael P Oct 29 '11 at 22:19

Variation on the same theme, I tried it out, works: LDAP security tips at SysadminTalk


1) Create a file, let's call it disable_anon_frontend.ldif with the following content:

dn: olcDatabase={-1}frontend,cn=config
add: olcRequires
olcRequires: authc

2) Create another file called disable_anon_backend.ldif with the following content:

dn: olcDatabase={1}hdb,cn=config
add: olcRequires
olcRequires: authc

3) Then on the server, modify the LDAP by issuing the following commands:

sudo ldapmodify -Q -Y EXTERNAL -H ldapi:/// -f disable_anon_frontend.ldif
sudo ldapmodify -Q -Y EXTERNAL -H ldapi:/// -f disable_anon_backend.ldif

4) Check by executing the following anon query: ldapsearch -x -LLL -H ldap:/// -b dc=example,dc=domain,dc=com dn (use your dc=... settings as applicable).

If you see the error message below, then anonymous access has been successfully disabled:

Server is unwilling to perform (53)
Additional information: authentication required

Good luck!

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Welcome to Server Fault! While this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference. – HopelessN00b Feb 7 '13 at 14:26
Thanks, you're absolutely right, I edited my answer as recommended. – user465139 Feb 7 '13 at 14:50

I've not tested but try something like this:

dn: olcDatabase={1}hdb,cn=config
add: olcAccess
olcAccess: to attrs=userPassword 
    by dn="cn=admin,dc=example,dc=com" write 
    by self write 
    by * none
olcAccess: to dn.base="" 
    by users read 
    by * none
olcAccess: to * 
    by dn="cn=admin,dc=example,dc=com" write 
    by * none
share|improve this answer
Thanks, this is how I am currently doing it per database. However, my question was how to do it globally. – Michael P Oct 29 '11 at 22:18

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