We're running a Policy Server and we'd like to know how to configure
RSA SecurID Ready with it, and as such, we'd like to get the
documentation on how to implement it, in particular the "RSA SecurID
Ready Implementation Guide".

Where can we find the upgraded "RSA SecurID Ready Implementation
Guide" ?

Release : 12.6

Component : SITEMINDER -POLICY SERVER

At first glance, the document "RSA SecurID Ready Implementation Guide"
is an old document that RSA published many years ago. It hasn't been
updated since.

Now the configuration steps for the RSA SecurID Authentication Scheme
can be found in the 12.6 documentation here :

  SecurID Authentication Schemes
  https://techdocs.broadcom.com/content/broadcom/techdocs/us/en/ca-enterprise-software/layer7-identity-and-access-management/single-sign-on/12-6-01/configuring/policy-server-configuration/authentication-schemes/securid-authentication-schemes.html

You have to pay attention to that limitation :

   RSA SecurID Authentication Schemes Are Not Supported on Red Hat Linux 7

   RSA does not have an available SDK for Red Hat Enterprise Linux 7.0
   for this release. The RSA SecurID authentication schemes are not
   available for this release on Red Hat Enterprise Linux 7.0.

   However, RSA provides an SDK for Red Hat Enterprise Linux 7.1 and
   later. The RSA SecurID authentication schemes are available for
   this release on Red Hat Enterprise Linux 7.1 and later.

   https://techdocs.broadcom.com/content/broadcom/techdocs/us/en/ca-enterprise-software/layer7-identity-and-access-management/single-sign-on/12-6-01/release-notes/product-limitations/policy-server-product-limitations.html

Note also that the RSA SecurID server is supported with version 8.0, 8.1
and 8.2 on Policy Server 12.6 :

  5 Third-Party Product Compatibility

    | Product                    | Version |
    |----------------------------+---------|
    | RSA Authentication Manager |     8.2 |
    |                            |     8.1 |
    |                            |     8.0 |

  p.13
  https://ftpdocs.broadcom.com/phpdocs/7/5262/5262_12_6_platform-support.pdf

And Policy Server 12.8 is supported with the 8.3 RSA Server :

  5 Third-Party Product Compatibility

    | Product                    | Version |
    |----------------------------+---------|
    | RSA Authentication Manager |     8.3 |
    |                            |   8.2.x |
    |                            |   8.1.x |
    |                            |   8.0.x |

  p.13
  https://ftpdocs.broadcom.com/phpdocs/7/5262/5262-12-8-platform-support-matrix.pdf

If you need precision about the configuration on the RSA SecurID side,
please get in touch with RSA vendor.