Hi Seema,
CA Secure proxy server bundle web agent, Apache and Tomcat together to achieve the proxy function and protect resource.
Your question:
Can I use the CA Secure Proxy server to install the web agent for CA SSO?
R: CA SPS has web agent bundle together. Use normal web agent or CA SPS is depends on the architecture you have. If you have standalone apache web server and want Siteminder to protect the resource hosted on web server, then normal web agent is sufficient.
However, if you want to have proxy function, you might consider CA SPS.
Documentation related to CA SPS
CA SiteMinder® SPS Architecture Introduced - CA Single Sign-On - 12.52 SP1 - CA Technologies Documentation
Documentation related to normal web agent
Architectural Use Cases - CA Single Sign-On - 12.52 SP1 - CA Technologies Documentation
Hope this helps.
Regards,
Kar Meng