Currently in case of  FIPS devices, there is no support for signing of SAML Authentication Requests. The SAML Assertion coming back from IDP itself can be verified for integrity. There is support only for unsigned SAML Authentication request assertions.

Configuration of SAML Action/Policy on NetScaler

Create SAML action/policy as shown and bind it to the corresponding authentication virtual server:

add authentication samlAction shibboleth -samlIdPCertName shib-idp-242 -samlRedirectUrl "https://idp.wi.int/idp/profile/SAML2/POST/SSO" -samlUserField nameid -samlRejectUnsignedAssertion OFF -samlIssuerName nssp.nsi-test.com
add authentication samlPolicy shibboleth ns_true shibboleth

Note: If the IDP is also sending unsigned assertion, you need to set -samlRejectUnsignedAssertion to OFF.

Sample Unsigned SAML Auth Request from NetScaler

<samlp:AuthnRequest xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol"
                    AssertionConsumerServiceURL="https://nssp.nsi-test.com/cgi/samlauth"
                    Destination="https://idp.wi.int/idp/profile/SAML2/POST/SSO"
                    ID="_31bbb997abb9aa383c42da4996b3ddef"
                    IssueInstant="2015-03-26T21:07:22Z"
                    ProtocolBinding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST"
                    Version="2.0">
    <saml:Issuer xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion">nssp.nsi-test.com</saml:Issuer>
</samlp:AuthnRequest>

Sample Unsigned SAML Auth Response from IDP

<saml2p:Response xmlns:saml2p="urn:oasis:names:tc:SAML:2.0:protocol"
                 Destination="https://nssp.nsi-test.com/cgi/samlauth"
                 ID="_975d8bb8b282deb6ee08e9a8a5c716f8"
                 InResponseTo="_31bbb997abb9aa383c42da4996b3ddef"
                 IssueInstant="2015-03-26T21:07:09.779Z"
                 Version="2.0"
                 >
    <saml2:Issuer xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion"
                  Format="urn:oasis:names:tc:SAML:2.0:nameid-format:entity"
                  >nssp.nsi-test.com</saml2:Issuer>
    <saml2p:Status>
        <saml2p:StatusCode Value="urn:oasis:names:tc:SAML:2.0:status:Success" />
    </saml2p:Status>
    <saml2:Assertion xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion"
                     ID="_5db5a79d40f40cc2d63ebc0a31967ad3"
                     IssueInstant="2015-03-26T21:07:09.779Z"
                     Version="2.0"
                     >
        <saml2:Issuer Format="urn:oasis:names:tc:SAML:2.0:nameid-format:entity">nssp.nsi-test.com</saml2:Issuer>
        <saml2:Subject>
            <saml2:NameID Format="urn:oasis:names:tc:SAML:2.0:nameid-format:transient"
                          NameQualifier="nssp.nsi-test.com"
                          >_70d797f41b27d1386a628201650edfd1</saml2:NameID>
            <saml2:SubjectConfirmation Method="urn:oasis:names:tc:SAML:2.0:cm:bearer">
                <saml2:SubjectConfirmationData Address="10.252.121.96"
                                               InResponseTo="_31bbb997abb9aa383c42da4996b3ddef"
                                               NotOnOrAfter="2015-03-26T21:12:09.779Z"
                                               Recipient="https://nssp.nsi-test.com/cgi/samlauth"
                                               />
            </saml2:SubjectConfirmation>
        </saml2:Subject>
        <saml2:Conditions NotBefore="2015-03-26T21:07:09.779Z"
                          NotOnOrAfter="2015-03-26T21:12:09.779Z"
                          >
            <saml2:AudienceRestriction>
                <saml2:Audience>nssp.nsi-test.com</saml2:Audience>
            </saml2:AudienceRestriction>
        </saml2:Conditions>
        <saml2:AuthnStatement AuthnInstant="2015-03-26T21:07:09.760Z"
                              SessionIndex="_943ff49f15bb92511d233f1a85bab52a"
                              >
            <saml2:SubjectLocality Address="10.252.121.96" />
            <saml2:AuthnContext>
                <saml2:AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</saml2:AuthnContextClassRef>
            </saml2:AuthnContext>
        </saml2:AuthnStatement>
        <saml2:AttributeStatement>
            <saml2:Attribute FriendlyName="streetAddress"
                             Name="urn:oid:2.5.4.9"
                             NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:uri"
                             >
                <saml2:AttributeValue xmlns:xs="http://www.w3.org/2001/XMLSchema"
                                      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                                      xsi:type="xs:string"
                                      >1.citrix</saml2:AttributeValue>
            </saml2:Attribute>
           </saml2:AttributeStatement>
    </saml2:Assertion>
</saml2p:Response>

 

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This article describes the configuration and limitations of NetScaler as SAML Service Provider on a FIPS device.