Hi. Praveen.
According to @Chris.Eland , we don't support such feature currently. There were several requests for it in the past, yet it was concluded that implementing and maintaining it would be too time consuming, due to inherent issues within SAML SLO design (you can find more about it [here](https://shibboleth.atlassian.net/wiki/spaces/CONCEPT/pages/928645229/SLOIssues)).
Here is one of such discussions: [link](https://support.gluu.org/7221/)
So it may be possible to implement, but it would require to extend Passport's code and/or to implement some custom script.