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What happens if DM files/folders aren’t whitelisted in the antivirus program?

Solved125.24K views19th November 2020antivirus
6
Luis Terrazas [SLC] [DevOps Member]150 11th November 2020 0 Comments

Hi! Does anyone have any information on any issues that might incur if an AV program doesn't exceptions for DM files/folders? I had an experience with Symantec where it had a problem with some DLL files but if anyone has some more technical information that would be great. Thanks!

Luis Terrazas [SLC] [DevOps Member] Selected answer as best 19th November 2020

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Bert Vandenberghe [SLC] [DevOps Enabler]8.12K Posted 11th November 2020 0 Comments

Hi Luis,

Two things can happen. First of all, the antivirus can consume more system resources by scanning log files and database files which all change a lot on a DataMiner node. Secondly, and this is more worrying, the antivirus can inject their DLL in to our processes. In case of Symantec, that would be UMEngx86.dll.

The consequences of the DLL injection could be a lot of different things, and others might be able to give more examples, but I'm thinking about slowing down certain actions or even completely blocking them. This can result in RTEs (runtime errors) or memory leaks, and it can even cause crashes of threads or even complete processes!

Because of the nature of the DataMiner product, we do have a lot of network communication, and therefore an antivirus, especially with heuristic or behavior analysis, inside the DataMiner processes is not a good idea and needs to be avoided at all times.

Bert

Luis Terrazas [SLC] [DevOps Member] Selected answer as best 19th November 2020
4
Ben Vandenberghe [SLC] [DevOps Enabler]9.06K Posted 11th November 2020 0 Comments

Not sure if it is relevant in this thread, but I also heard about situations where there was an issue with the AV scanning all in and outgoing network traffic.  And as this can be quite considerable for a DataMiner node, this causes the AV to consume a lot of CPU capacity.

Ben Vandenberghe [SLC] [DevOps Enabler] Answered question 11th November 2020
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