Hi,
I am not sure if i understand the difference between Authorization and Authentication. Does Openldap support both or it supports or configured as Authorization or Authentication server? I will appreciate if somebody can help me understand with some examples.
Regards,
Kaushal
On 10/8/2015 2:16 μμ, Kaushal Shriyan wrote:
I am not sure if i understand the difference between Authorization and Authentication. Does Openldap support both or it supports or configured as Authorization or Authentication server? I will appreciate if somebody can help me understand with some examples.
From Wikipedia: "Authentication is the act of confirming the truth of an attribute of a datum or entity. This might involve confirming the identity of a person or software program, tracing the origins of an artifact, or ensuring that a product is what its packaging and labeling claims to be." That's how we know who an application talks to.
From Wikipedia: "Authorization is the function of specifying access rights to resources." After authentication we know the person, but we still unsure whether it's supposed to access a given resource and hence the need for authorization.
To get to know Openldap, read: http://www.openldap.org/doc/admin24/
Everything depends on what you are trying to do, your project needs.
An example for AAI services would be something like OpenLDAP + Kerberos or Radius. Google for AAI / SSO systems.
Best regards, Nick
Hi Nick,
Thanks for the explanation. Does AAI mean Authentication Authorization Identity and SSO mean Single Sign On? As per your example of OpenLDAP + Kerberos or Radius. is Openldap used for Authentication and Kerberos or Radius server for Authorization? Please clarify.
Regards,
Kaushal
On Mon, 10 Aug 2015 at 17:37 Nick Milas nick@eurobjects.com wrote:
On 10/8/2015 2:16 μμ, Kaushal Shriyan wrote:
I am not sure if i understand the difference between Authorization and Authentication. Does Openldap support both or it supports or configured as Authorization or Authentication server? I will appreciate if somebody can help me understand with some examples.
From Wikipedia: "Authentication is the act of confirming the truth of an attribute of a datum or entity. This might involve confirming the identity of a person or software program, tracing the origins of an artifact, or ensuring that a product is what its packaging and labeling claims to be." That's how we know who an application talks to.
From Wikipedia: "Authorization is the function of specifying access rights to resources." After authentication we know the person, but we still unsure whether it's supposed to access a given resource and hence the need for authorization.
To get to know Openldap, read: http://www.openldap.org/doc/admin24/
Everything depends on what you are trying to do, your project needs.
An example for AAI services would be something like OpenLDAP + Kerberos or Radius. Google for AAI / SSO systems.
Best regards, Nick
I can be used for any of it.
Here, we use OpenLDAP for authentication (login) and authorization (who can login via sshd allowed groups, who can sudo) on our group's systems – this requires the information being available as well as configuring the clients to USE that information. We also use it to store inventory data which is neither authn or authz (hey, OpenLDAP is a decent hammer and the problem at the time looked like a nail).
Corporate uses Microsoft Active Directory (based on LDAP) – which is used for authn, authz, and a plethora of other uses (mail settings, location info, managing host 'members', etc).
Perhaps googling "what is LDAP for" would be a good place to start with your questions.
- chris
From: openldap-technical [mailto:openldap-technical-bounces@openldap.org] On Behalf Of Kaushal Shriyan Sent: Monday, August 10, 2015 5:16 AM To: Nick Milas nick@eurobjects.com; openldap-technical@openldap.org Subject: Re: Is Openldap a Authorization or Authentication system?
Hi Nick,
Thanks for the explanation. Does AAI mean Authentication Authorization Identity and SSO mean Single Sign On? As per your example of OpenLDAP + Kerberos or Radius. is Openldap used for Authentication and Kerberos or Radius server for Authorization? Please clarify.
Regards,
Kaushal
On Mon, 10 Aug 2015 at 17:37 Nick Milas <nick@eurobjects.commailto:nick@eurobjects.com> wrote: On 10/8/2015 2:16 μμ, Kaushal Shriyan wrote:
I am not sure if i understand the difference between Authorization and Authentication. Does Openldap support both or it supports or configured as Authorization or Authentication server? I will appreciate if somebody can help me understand with some examples.
From Wikipedia: "Authentication is the act of confirming the truth of an attribute of a datum or entity. This might involve confirming the identity of a person or software program, tracing the origins of an artifact, or ensuring that a product is what its packaging and labeling claims to be." That's how we know who an application talks to.
From Wikipedia: "Authorization is the function of specifying access rights to resources." After authentication we know the person, but we still unsure whether it's supposed to access a given resource and hence the need for authorization.
To get to know Openldap, read: http://www.openldap.org/doc/admin24/
Everything depends on what you are trying to do, your project needs.
An example for AAI services would be something like OpenLDAP + Kerberos or Radius. Google for AAI / SSO systems.
Best regards, Nick
________________________________ This message is private and confidential. If you have received it in error, please notify the sender and remove it from your system.
Standard Windows Active Directory AuthN/AuthZ isn't LDAP. It is Kerberos (and NTLM). It uses the LDAP Directory in the backend for its database to store credentials and group mapping as well as any other relevant data for the users and other objects as LDAP/DAP Directories were intended to be used.
While LDAP protocol can be used for authentication, Kerberos is the expected to be the safer authentication mechanism as no passwords are transferred in the requests as they are with LDAP authentication. When you log on with Windows to Active Directory, a Kerberos authentication occurs and the ticket is then passed with any/all LDAP requests after that to access data in AD, or on other servers.
That being said, some applications (generally *NIX apps) will authenticate to Active Directory with LDAP. If this is done, the Domain Controllers should have PKI certs on them and LDAPS or TLS should be used to secure the LDAP traffic otherwise the passwords are going across the network in clear text.Better is to use Kerberos which is possible via the open source kerb packages as well as there are several third party vendors now producing products to do it properly (and easily) including Dell (via Vintela/Quest product), Centrify, and BeyondTrust.
For the OpenLDAP/Kerberos bits... See
http://www.linux-mag.com/id/4738/ http://www.linux-mag.com/id/4765/ http://web.mit.edu/kerberos/krb5-1.12/doc/admin/conf_ldap.html
To get started.
joe
-- O'Reilly Active Directory Fifth Edition - http://link.joeware.org/AD5E Blog: http://blog.joeware.net
On Mon, Aug 10, 2015 at 11:53 AM, Chris Jacobs Chris.Jacobs@apollo.edu wrote:
I can be used for any of it.
Here, we use OpenLDAP for authentication (login) and authorization (who can login via sshd allowed groups, who can sudo) on our group's systems – this requires the information being available as well as configuring the clients to USE that information. We also use it to store inventory data which is neither authn or authz (hey, OpenLDAP is a decent hammer and the problem at the time looked like a nail).
Corporate uses Microsoft Active Directory (based on LDAP) – which is used for authn, authz, and a plethora of other uses (mail settings, location info, managing host 'members', etc).
Perhaps googling "what is LDAP for" would be a good place to start with your questions.
- chris
*From:* openldap-technical [mailto:openldap-technical-bounces@openldap.org] *On Behalf Of *Kaushal Shriyan *Sent:* Monday, August 10, 2015 5:16 AM *To:* Nick Milas nick@eurobjects.com; openldap-technical@openldap.org *Subject:* Re: Is Openldap a Authorization or Authentication system?
Hi Nick,
Thanks for the explanation. Does AAI mean Authentication Authorization Identity and SSO mean Single Sign On?
As per your example of OpenLDAP + Kerberos or Radius. is Openldap used for Authentication and Kerberos or Radius server for Authorization? Please clarify.
Regards,
Kaushal
On Mon, 10 Aug 2015 at 17:37 Nick Milas nick@eurobjects.com wrote:
On 10/8/2015 2:16 μμ, Kaushal Shriyan wrote:
I am not sure if i understand the difference between Authorization and Authentication. Does Openldap support both or it supports or configured as Authorization or Authentication server? I will appreciate if somebody can help me understand with some examples.
From Wikipedia: "Authentication is the act of confirming the truth of an attribute of a datum or entity. This might involve confirming the identity of a person or software program, tracing the origins of an artifact, or ensuring that a product is what its packaging and labeling claims to be." That's how we know who an application talks to.
From Wikipedia: "Authorization is the function of specifying access rights to resources." After authentication we know the person, but we still unsure whether it's supposed to access a given resource and hence the need for authorization.
To get to know Openldap, read: http://www.openldap.org/doc/admin24/
Everything depends on what you are trying to do, your project needs.
An example for AAI services would be something like OpenLDAP + Kerberos or Radius. Google for AAI / SSO systems.
Best regards, Nick
This message is private and confidential. If you have received it in error, please notify the sender and remove it from your system.
joe wrote:
Standard Windows Active Directory AuthN/AuthZ isn't LDAP. It is Kerberos (and NTLM). It uses the LDAP Directory in the backend for its database to store credentials and group mapping as well as any other relevant data for the users and other objects as LDAP/DAP Directories were intended to be used.
While LDAP protocol can be used for authentication, Kerberos is the expected to be the safer authentication mechanism as no passwords are transferred in the requests as they are with LDAP authentication. When you log on with Windows to Active Directory, a Kerberos authentication occurs and the ticket is then passed with any/all LDAP requests after that to access data in AD, or on other servers.
That's quite a mischaracterization, as "LDAP authentication" isn't just any one particular mechanism. E.g., you can authenticate to LDAP using Kerberos tickets as well, using SASL/GSSAPI.
And while Kerberos is only an authentication mechanism, it is not the only authentication mechanism that exists. E.g., you can achieve analogous functionality using X.509 certificates.
That being said, some applications (generally *NIX apps) will authenticate to Active Directory with LDAP. If this is done, the Domain Controllers should have PKI certs on them and LDAPS or TLS should be used to secure the LDAP traffic otherwise the passwords are going across the network in clear text.Better is to use Kerberos which is possible via the open source kerb packages as well as there are several third party vendors now producing products to do it properly (and easily) including Dell (via Vintela/Quest product), Centrify, and BeyondTrust.
Again, a clear misunderstanding of the underlying technologies. Kerberos as used in LDAP also provides for securing of traffic, you don't need TLS if you have GSSAPI. And vice versa, TLS can be used both for the actual authentication step (using X.509 certs, as noted above) as well as for securing the traffic.
openldap-technical@openldap.org
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Chris Jacobs -
Howard Chu -
joe -
Kaushal Shriyan -
Nick Milas