Pain in the upper abdomen can often be attributed to temporary problems such as indigestion or gas. Persistent or severe upper abdominal pain may be related to other digestive tract conditions or to conditions of the body wall, blood vessels, kidneys, heart, or lungs.
Impersonation is the ability of a thread to execute in a security context that is different from the context of the process that owns the thread. Impersonation is designed to meet the security requirements of client/server applications.
Anonymous authentication gives users access to a website without prompting them for a user name or password. When a user attempts to connect to a public website, the web server assigns the user to the Windows user account called IUSR_computername, where computername is the name of the server on which IIS is running.