What are the application protection modes available in IIS 5.0?
Low application-protection: (In process) – All websites runs with inetinfo.exe process, you can’t track performance or identify the cause of app crash. Fastest execution, Lowest safety.
Medium application protection: (Out of process Pooled) – All website runs with Single DLLHost.exe (shared by all websites) and one inetinfo.exe. Issue causing Website identification is not possible as PID will point to a group ie. Out of process Pooled Applications. Faster execution than High isolation, Medium Safety.
High application protection: (Out of process) – All websites run with dedicated DLLHost.exe (Not shared and one for each website) and one inetinfo.exe process. We can identify the issue causing website using PID and match it with COM+ applications. Slower execution, Highest Safety.
Inetinfo.exe – It pass user request from http.sys to DLLHost.exe (Incase) and also manage and monitor the DLLHost.exe.
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