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Securing Splunk Enterprise
- Install Splunk Enterprise securely
- Secure your admin account
- About TLS encryption and cipher suites
- Securing Splunk Enterprise with FIPS
- About default certificate authentication
- Secure Splunk Enterprise on your network
- Disable unnecessary Splunk Enterprise components
- Secure Splunk Enterprise service accounts
- Deploy secure passwords across multiple servers
- Harden the network port that App Key Value Store uses
- Some best practices for your servers and operating system
- Use access control to secure Splunk data
- About user authentication
- About configuring role-based user access
- About defining roles with capabilities
- Add and edit roles with Splunk Web
- Add and edit roles with authorize.conf
- Configure access to manager consoles and apps in Splunk Enterprise
- Find existing users and roles
- Delete all user accounts
- Secure access for Splunk knowledge objects
- Use network access control lists to protect your deployment
- Set up user authentication with LDAP
- Manage Splunk user roles with LDAP
- LDAP prerequisites and considerations
- Secure LDAP authentication with transport layer security (TLS) certificates
- How the Splunk platform works with multiple LDAP servers for authentication
- Configure LDAP with Splunk Web
- Map LDAP groups to Splunk roles in Splunk Web
- Configure LDAP with the configuration file
- Map LDAP groups and users to Splunk roles using configuration files
- Test your LDAP configuration on Splunk Enterprise
- Change authentication schemes from native to LDAP on Splunk Enterprise
- Remove an LDAP user safely on Splunk Enterprise
- Configure single sign-on with SAML
- Configure SSO with PingIdentity as your SAML identity provider
- Configure SSO with Okta as your identity provider
- Configure SSO with Microsoft Azure AD or AD FS as your Identity Provider
- Configure SSO with OneLogin as your identity provider
- Configure SSO with Optimal as your identity provider
- Configure SSO in Computer Associates (CA) SiteMinder
- Secure SSO with TLS certificates
- Configuring SAML in a search head cluster
- Configure Ping Identity with leaf or intermediate SSL certificate chains
- Configure SAML SSO for other IdPs
- Configure advanced settings for SSO
- Map groups on a SAML identity provider to Splunk roles
- Modify or remove role mappings
- Configure SAML SSO in the configuration files
- Troubleshoot SAML SSO
Troubleshoot Splunk forwarder TCP tokens
You can control which forwarders in your Splunk Enterprise deployment have access to the indexers by setting up forwarder TCP tokens. In the case where a forwarder TCP token becomes corrupt, or the indexer to which the forwarder sends data rejects the token, that indexer generates an error message in its logs. A forwarder always tries to communicate with the indexer you have configured it to communicate with, regardless of whether or not the TCP token you have configured for it is valid.
To locate the bad forwarder token, increase the logging level of the indexer:
- Open a shell prompt.
- Using a text editor, edit
SPLUNK_HOME/etc/log.cfgas follows:category.TcpOutputProc=DEBUG category.TcpInputConfig=DEBUG category.TcpInputProc=DEBUG
- Save the file and close it.
- Restart the indexer.
When a token that a forwarder sends matches the token that the indexer receives, Splunk components generate the following messages:
Indexer:
09-15-2015 13:21:30.746 -0700 DEBUG TcpInputProc - Forwarder token matched
Universal Forwarder:
09-15-2015 13:24:00.343 -0700 DEBUG TcpOutputProc - Indexer can use tokens
When the tokens do not match, the indexer generates a message similar to the following:
09-15-2015 13:22:01.747 -0700 ERROR TcpInputProc - Exception: Token not sent by forwarder src=10.140.126.58:51838! for data received from src=10.140.126.58:51838 09-15-2015 13:52:14.803 -0700 ERROR TcpInputProc - Exception: Token sent by forwarder does not match configured tokens src=10.140.126.58:51990! for data received from src=10.140.126.58:51990
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This documentation applies to the following versions of Splunk® Enterprise: 7.0.0, 7.0.1, 7.0.2, 7.0.3, 7.0.4, 7.0.5, 7.0.6, 7.0.7, 7.0.8, 7.0.9, 7.0.10, 7.0.11, 7.0.13, 7.1.0, 7.1.1, 7.1.2, 7.1.3, 7.1.4, 7.1.5, 7.1.6, 7.1.7, 7.1.8, 7.1.9, 7.1.10, 7.2.0, 7.2.1, 7.2.2, 7.2.3, 7.2.4, 7.2.5, 7.2.6, 7.2.7, 7.2.8, 7.2.9, 7.2.10, 7.3.0, 7.3.1, 7.3.2, 7.3.3, 7.3.4, 7.3.5, 7.3.6, 7.3.7, 7.3.8, 7.3.9, 8.0.0, 8.0.1, 8.0.2, 8.0.3, 8.0.4, 8.0.5, 8.0.6, 8.0.7, 8.0.8, 8.0.9, 8.0.10, 8.1.0, 8.1.1, 8.1.2, 8.1.3, 8.1.4, 8.1.5, 8.1.6, 8.1.7, 8.1.8, 8.1.9, 8.1.10, 8.1.11, 8.1.12, 8.1.13, 8.1.14, 8.2.0, 8.2.1, 8.2.2, 8.2.3, 8.2.4, 8.2.5, 8.2.6, 8.2.7, 8.2.8, 8.2.9, 8.2.10, 8.2.11, 8.2.12, 9.0.0, 9.0.1, 9.0.2, 9.0.3, 9.0.4, 9.0.5, 9.0.6, 9.0.7, 9.0.8, 9.0.9, 9.0.10, 9.1.0, 9.1.1, 9.1.2, 9.1.3, 9.1.4, 9.1.5, 9.1.6, 9.1.7, 9.1.8, 9.1.9, 9.2.0, 9.2.1, 9.2.2, 9.2.3, 9.2.4, 9.2.5, 9.2.6, 9.3.0, 9.3.1, 9.3.2, 9.3.3, 9.3.4, 9.4.0, 9.4.1, 9.4.2
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