Hi Krishma,
please check the .access files under /pub directory for the ACLs assigned to the pages.
If access without user and password is needed you will have to use the ACL Anonymus, but this is not recommended.
More likely you are looking for some sort of Read-Only IS Admin pages.
There are already several threads for this here in the community.
Regards,
Holger
#Integration-Server-and-ESB#webMethods