nis 2010 print sharing portscan blocks pc

I have NIS 2010 installed on both pcs on a home network, one is a desktop and the other is a laptop.  Both are running 32 bit Vista Home Basic.  Everything is set to full trust on both pcs.

 

I was able to print on a shared printer connected to the desktop from the laptop.  I had to reinstall NIS 2010 on the desktop.  Now I cannot print from the laptop.

 

When I look at the history list in the Norton control panel on the laptop, it shows a medium intrusion attempt from the desktop that was blocked.  The intrusion attempt appears twice each time I try to print.  I looked at the details of the incident and it says:

risk name portscan

risk  medium

attacking computer (the desktop's name and ip address,5355

destination address (the laptop)

source address (the desktop's address twice:   xxx.xxx.x.xx(xxx.xxx.x.xx))

traffic description UDP,port 5355

 

Any ideas as to how to fix this?