Higher Compatibility vs. Higher Efficiency

ablatt · Feb 25, 2007

Is it OK to simply leave ALL the IMON HTTP Client Compatibility settings at Higher Compatibility? Is browsing MUCH less safe this way? Is performance way worse?

I ask this because it is difficult to know exactly which ones to set at Higher Efficiency and which to leave at Higher Compatibility.

ASpace · Feb 25, 2007

In order to have absolutely no problems you'd better leave all applications to Higher compatibility. If you want , leave your browser to Higher efficency . With HE you might have problems and slow downs.

In both ways , AMON will be there to catch what IMON missed

Description of the client comp modes , from the NOD32 help file

Compatibility Setup
Client compatibility setup provides an option to toggle between active and passive mode (better efficiency and better compatibility respectively) used for a particular application.

IMON works in two modes: „passive“ and „active“. In passive (higher compatibility) mode, portions of a downloaded file are continuously passed on to the target application whilst IMON stores a temporary copy of each of the fragments. When the last fragment is detected, the whole file is scanned for viruses. If an infiltration is detected, a warning window appears and the connection with the particular server is terminated. A disadvantage of that is that the already downloaded portion of the file may already contain a fundamental portion of a malicious code. What's more, if the application repeatedly attempts to download infected file, it may use the already downloaded data and request only the rest of the file. In such case, IMON may not find nothing suspicious in the remaining portion.

In active (higher efficiency) mode, IMON first downloads and scans whole file and then passes it on to the target application. This procedure is safer because in the case of an infiltration the application does not receive any portion of the downloaded file. A disadvantage is that the application receives all data at once, therefore it cannot show the download status properly. Therefore, if the download lasts for more than 5 seconds, a small window showing the dowload progress pops up beneath the system tray. Active mode is not suitable for certain types of data which requires a continual data flow (e.g. multimedia, streaming video/audio).
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Brian N · Feb 25, 2007

Don't worry about it. IMON will automatically switch back to Higher Compatibility when it feel like it.

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Higher Compatibility vs. Higher Efficiency

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