traffic has been blocked from this application nt kernel & system (ntoskrnl.exe)

I have received this message several times. Even though I know that this topic has been discussed before, in my case the log indicates that the Symantec is blocking access to an online printer from my organization:

3/8/2019 5:46:26 AM    Blocked    3    Incoming    TCP    msisxerox.mgnt.stevens-tech.edu [155.246.119.27]    00-11-22-33-44-55    39334    155.246.152.178    00-05-9A-3C-7A-00    5357    C:\WINDOWS\system32\NTOSKRNL.EXE    gcrea    gcrea    Default    6    3/8/2019 5:43:51 AM    3/8/2019 5:45:24 AM    Block Web Service requests part A    
 

What can I do about this?