Securing SPARQL endpoints
SPARQL endpoints are Web services, and they are capable of more than providing Read-Only access to a back-end graph DBMS.
Though commonly general-purpose, SPARQL endpoints can also be purpose-specific, and therefore limited to specific Create, Read, Update, and/or Delete operation privileges.
The privileges provided by a given Virtuoso SPARQL endpoint may be based simply upon the endpoint's URL, or upon sophisticated rules associating specific user identities with specific database roles and privileges.
Virtuoso offers three methods for securing SPARQL endpoints:
- Digest Authentication via SQL Accounts
- OAuth Protocol based Authentication
- WebID Protocol based authentication
By default, Virtuoso has several purpose-specific SPARQL endpoints, associated with these authentication methods along the following lines --
| Endpoint |
Endpoint URL Convention 
|
More information... |
|---|---|---|
| Basic default | http://<cname>[:<port>]/sparql |
Virtuoso SPARQL Web Service Endpoint documentation section. |
| SPARQL Digest (Digest Authentication via SQL Accounts) |
http://<cname>[:<port>]/sparql-auth |
Demonstration of setting user privileges to interact with OAuth Protected SPARQL Endpoint |
| SPARQL OAuth | http://<cname>[:<port>]/sparql-oauth |
Demonstration of the OAuth keys and Protected SPARQL Endpoint features of the Virtuoso OAuth UI |
| SPARQL WebID | https://<cname>[:<port>]/sparql and https://<cname>[:<port>]/sparql-webid |
Demonstration of setting WebID Protocol ACLs using the Virtuoso Authentication Server UI |
| SPARQL Graph Store Protocol | http://<cname>[:<port>]/sparql-graph-crud |
Primarily intended to serve requests from applications, rather than human interactions via browser, this is covered in Virtuoso SPARQL Authentication documentation section. |
| Digest Authentication | http://<cname>[:<port>]/sparql-graph-crud-auth |
Primarily intended to serve requests from applications, rather than human interactions via browser, this is covered in Virtuoso SPARQL Authentication documentation section. |
We also have step-by-step guides to walk you through the process of setting up your own SPARQL endpoint(s) for --
- read-only access
- read-write access using digest authentication
- read-write access using OAuth
- read-write access using SSL via WebID
Related
- Safeguarding your Virtuoso-hosted SPARQL Endpoint
- SPARQL Endpoint Protection Methods Collection
- Virtuoso documentation
- Virtuoso Tips and Tricks Collection
- SPARUL over SPARQL using the http://cname:port/sparql-auth endpoint
- Virtuoso Authentication Server UI
- Manage a SPARQL-WebID based Endpoint
- Configure Virtuoso instance as an X.509 Certificate Authority and HTTPS listener
- Configure Virtuoso+ODS instance as an X.509 Certificate Authority and HTTPS listener
- WebID Protocol Support in OpenLink Data Spaces.
- Manage ODS Datadspaces Objects WebID Access Control Lists (ACLs):
- Guide for Set up a X.509 certificate issuer and HTTPS listener and generate ODS user certificates.
- Setting up PubSubHub in ODS
- PubSubHubBub Demo Client Example
- Feed subscription via PubSubHub protocol Example
- Setting Up PubSubHub to use WebID Protocol or IP based control lists
- CA Keys Import using Conductor
- Generate an X.509 Certificate hosted WebID Guide
- Generate an X.509 Certificate (with a WebID watermark) to be managed by host operating system keystore
- Generate an X.509 Certificate (with a WebID watermark) to be managed by a browser-based keystore
- Using Virtuoso's WebID Verification Proxy Service with a WebID-bearing X.509 certificate
- Using Virtuoso's WebID Identity Provider (IdP) Proxy Service with an X.509 certificate
- ODS Briefcase WebID Protocol Share File Guide
- WebID Protocol Specification
- Test WebID Protocol Certificate page
- WebID Protocol Certificate Generation page
