PAP Module
The pap module accepts a large number of formats for the known good (reference)
password, such as crypt hashes, md5 hashes, and etc.
The module takes the User-Password and performs the necessary transformations of the
user submitted password to match the copy of the password the server has retrieved.
For instructions on creating the various types of passwords, see http://www.openldap.org/faq/data/cache/347.html
The module looks for the Password.With-Header control attribute to find
the "known good" password. The attribute value comprises the header followed
immediately by the password data. The header is given by the following table.
| Header | Attribute | Description |
|---|---|---|
{clear} |
Password.Cleartext |
Clear-text passwords. |
{cleartext} |
Password.Cleartext |
Clear-text passwords. |
{crypt} |
Password.Crypt |
Unix-style "crypt"ed passwords. |
{md5} |
Password.MD5 |
MD5 hashed passwords. |
{base64_md5} |
Password.MD5 |
MD5 hashed passwords. |
{smd5} |
Password.SMD5 |
MD5 hashed passwords, with a salt. |
{sha} |
Password.SHA |
SHA1 hashed passwords. |
Password.SHA1 |
SHA1 hashed passwords. |
|
{ssha} |
Password.SSHA |
SHA1 hashed passwords, with a salt. |
{sha2} |
Password.SHA2 |
SHA2 hashed passwords. |
{sha224} |
Password.SHA2 |
SHA2 hashed passwords. |
{sha256} |
Password.SHA2 |
SHA2 hashed passwords. |
{sha384} |
Password.SHA2 |
SHA2 hashed passwords. |
{sha512} |
Password.SHA2 |
SHA2 hashed passwords. |
{ssha224} |
Password.SSHA2-224 |
SHA2 hashed passwords, with a salt. |
{ssha256} |
Password.SSHA2-256 |
SHA2 hashed passwords, with a salt. |
{ssha384} |
Password.SSHA2-384 |
SHA2 hashed passwords, with a salt. |
{ssha512} |
Password.SSHA2-512 |
SHA2 hashed passwords, with a salt. |
{ssha3} |
Password.SHA3 |
SHA3 hashed passwords. |
{ssha3-224} |
Password.SHA3-224 |
SHA3 hashed passwords, with a salt. |
{ssha3-256} |
Password.SHA3-256 |
SHA3 hashed passwords, with a salt. |
{ssha3-384} |
Password.SHA3-384 |
SHA3 hashed passwords, with a salt. |
{ssha3-512} |
Password.SHA3-512 |
SHA3 hashed passwords, with a salt. |
{nt} |
Password.NT |
Windows NT hashed passwords. |
{nthash} |
Password.NT |
Windows NT hashed passwords. |
{md4} |
Password.NT |
Windows NT hashed passwords. |
{x-nthash} |
Password.NT |
Windows NT hashed passwords. |
{ns-mta-md5} |
Password.NS-MTA-MD5 |
Netscape MTA MD5 hashed passwords. |
{x- orcllmv} |
Password.LM |
Windows LANMAN hashed passwords. |
{X- orclntv} |
Password.NT |
Windows NT hashed passwords. |
The module tries to be flexible when handling the various password for mats. It will automatically handle Base-64 encoded data, hex strings, and binary data, and convert them to a format that the server can use.
If there is no Password.With-Header attribute, the module looks for one
of the Password.Cleartext, Password.NT, Password.Crypt, etc. attributes
as listed in the above table. These attributes should contain the relevant
format password directly, without the header prefix.
Only one control attribute should be set, otherwise the behaviour is undefined as to which one is used for authentication.
It is important to understand the difference between the User-Password
and Password.Cleartext attributes. The Password.Cleartext attribute is
the "known good" password for the user. Simply supplying the Password.Cleartext
to the server will result in most authentication methods working. The User-Password
attribute is the password as typed in by the user on their private machine.
The two are not the same, and should be treated very differently. That is, you should
generally not use the User-Password attribute anywhere in the RADIUS configuration.
|
Configuration Settings
- normalise
-
By default the server will use heuristics to try and automatically handle base64 or hex encoded passwords. This behaviour can be stopped by setting the following to
no.
The default is yes
- password_attribute
-
Which attribute in the request should be used as the user’s password when performing PAP authentication.