Securing the Splunk Platform

Configure SAML SSO in the configuration files

This topic explains how to set up SSO for SAMLv2 using configuration files:

• Configure authentication.conf and web.conf in Splunk Enterprise
• Configure your identity provider

Configure authentication.conf

Configure the following stanza in authentication.conf

[authentication]
authSettings = saml_settings
authType = SAML
[rolemap_SAML]
admin = Super Admin;
power = Power Admin;
user = <list roles> Admin;Employee;  
[saml_settings]
entityId = <entityid>
idpAttributeQueryUrl = <path to the Attribute query> https://your path/idp/attrsvc.ssaml2
idpCertPath = <path to the idp cert in Splunk> /home/user/splunk/saml-install/etc/auth/ping_idp.crt
idpSSOUrl = <path to the sso url> https://your path/idp/SSO.saml2
idpSLOUrl = <Logout url. If not specified, this will be treated as a typical sso and the logout button will be disabled> https://your path/idp/SLO.saml2 # 
redirectPort=443
attributeQueryTTL = 3600
signAuthnRequest = true
signedAssertion = true
attributeQueryRequestSigned = true
attributeQueryResponseSigned = true
attributeQuerySoapPassword = <your password>
attributeQuerySoapUsername = <your username> 

Working with users not assigned to a role

if SAML users do not have assigned roles, you can still include them by configuring the skipAttributeQueryForUsers and defaultRoleIfMissing settings to include those users. For example:

defaultRoleIfMissing = user1,user2,user3
skipAttributeQueryRequestForUsers=user1,user2,user3

Note that defaultRoleMissing cannot be used in lieu of the skipAttributeQueryForUsers. These attributes work in tandem and you must configure both attributes.

Attribute Query Request for Ping Identity

The following is a workaround for the Attribute Query Request field and should be included in your stanza. This is because the existing SSL configuration is too strong to work with Ping Identity, causing the attribute query to fail. You can add the following workaround to accommodate Ping Identity.

#cipherSuite = TLSv1+MEDIUM:@STRENGTH
cipherSuite = ALL:!aNULL:!eNULL:!LOW:!EXP:RC4+RSA:+HIGH:+MEDIUM
defaultRoleIfMissing = user
skipAttributeQueryRequestForUsers=admin,username,anotherusername
sslKeysfile = <path_to_saml_signing_cert_and_keys>
sslKeysfilePassword = <password_for_saml_keys>

Configure web.conf and optionally add a failure redirect address

Add the following values to your settings stanza in web.conf

[settings]
appServerPorts = 7065 <make sure this attribute is enabled>
ssoAuthFailureRedirect = http://10.140.31.19:7000/ui/en-us/account/sso_error <this is your custom user redirect for failed logins>

Configure your identity provider

Now you must configure your IdP to import Splunk metadata. To import Splunk Enterprise metadata on your IdP, make sure that AuthnRequest signing and AttributeQuery request signing setting is compatible on Splunk Enterprise and IdP:

1. Export the IdP certificate onto a file in your Splunk Enterprise instance.

2. Make sure that authentication.conf points to this certificate in the SAML configuration stanzas.

3. Import the Splunk Enterprise server certificate (server.pem) into the IdP for signature verification.

Note that Splunk metadata can be exported by hitting /saml/spmetadata endpoint on SplunkWeb. You can also access the SAML-sp-metadata endpoint on splunkd. These endpoints are only available if SAML is already configured.