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BitDefender Firewall preventing off-site connection via Citrix Receiver 4.9 LTSR


Jacob Dorsey

Question

Environment:

 

Control:

Citrix XenDesktop 7.15

Citrix Netscaler 12.1

 

Access:

Citrix Receiver 4.9 LTSR

 

Resource:

VDAs: Windows Server 2016, Windows 2012 R2, Windows 10

 

 

I have a user running Windows 10 on a laptop with BitDefender Total Internet Security for PC (https://www.bitdefender.com/solutions/internet-security.html), and only when they're offsite, they can't connect to any of our Citrix VDA's. We've tried following the exclusion rules here:

https://www.bitdefender.com/support/bitdefender-is-blocking-a-safe-website-or-online-application-1795.html

 

Director just shows a generic client connection timeout.

If the user disables their BitDefender firewall, they can connect fine, and can even re-enable it once the connection is established. They just can't launch applications/desktops while the firewall is on. They can connect using the lite version, just not using their Citrix Receiver.

 

Any suggestions on how to exclude Citrix Receiver connections from the bitdefender firewall? 


Specifically added these exclusions in bitdefender:

 

 

Files:

%userprofile%\AppData\Local\Temp\Citrix\RTMediaEngineSRV
\MediaEngineSRVDebugLogs\*\*.txt

Processes:

%programfiles(x86)%\Citrix\ICA Client\MediaEngineService.exe

%programfiles(x86)%\Citrix\ICA Client\CDViewer.exe

%programfiles(x86)%\Citrix\ICA Client\concentr.exe

%programfiles(x86)%\Citrix\ICA Client\wfica32.exe

%programfiles(x86)%\Citrix\ICA Client\AuthManager\AuthManSvr.exe

%programfiles(x86)%\Citrix\ICA Client\SelfServicePlugin\SelfService.exe

%programfiles(x86)%\Citrix\ICA Client\SelfServicePlugin\SelfServicePlugin.exe

Please note that these exclusions for Receiver are typically not needed.  We have only seen a need for these in environments where the antivirus is configured with stricter than usual policies or where multiple security agents are in use simultaneously (AV, DLP, HIP, etc.)

 

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