1.) With Single Sign On (Siteminder), protect the TEWS url with SiteMinder/SSO in the same way you would protect any other url with SSO/Siteminder.
Your TEWS url needs to be protected by SSO. Create a realm in SSO to protect
Your SSO administrator can assist you with the SSO configuration, or feel free to open a case with the SSO support team.
2.) In Identity Manager, in the Identity Manager management console (../iam/immanage):
Home > Environments > [your_envName] > Advanced Settings > Web Services
On the Web Services Properties screen the following are required.
Enable Execution: [box must be checked]
Enable WSDL generation: [box must be checked]
Enable Admin_id: [must be UN-checked if using individual users IDs instead of Admin ID]
Admin Password required: [must be UN-check if not using admin ID authentication]
SiteMinder Authentication: [Select the authentication scheme you configured for TEWS in SSO]
Once done TEWS should be protected by SSO.