LabVIEW Shared Variables through Windows Firewall

Using the LabVIEW Shared Variable Server with remote computers and devices requires allowing certain programs and ports to pass through the Windows Firewall.

LabVIEW programs to allow through Windows Firewall

C:\Windows\SysWOW64\lkads.exe
C:\Windows\SysWOW64\lktsrv.exe
C:\Program Files (x86)\National Instruments\Shared\Tagger\tagsrv.exe
  • tagsrv.exe: under Program Files (x86), even for LabVIEW 64-bit
  • LabVIEW 32-bit: lkads.exe & lktsrv.exe under C:\Windows\System32

Ports allowed: Windows Firewall

TCP UDP
2343, 59110-59115 2343, 6000-6010

One TCP port above 59110 is used per application. Opening TCP ports 59110-59115 assumes ≤ 5 concurrent LabVIEW applications.

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