# Working in the WS Extensions Page

The Web Service Client Security Extension page appears in the Web deployment descriptor editor, only when you have already defined a web service. You can use this page to:

- Add, edit, or remove a service reference
- Add, edit or remove a port Qname binding
- Add, edit or remove the default mappings for a selected service
- Modify the Request Generator configuration for the Selected Port Qname Binding, including integrity, confidentiality and security settings.
- Modify timestamp and other information

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