Norton sometimes disconnect me (usb to ethernet)

My LAN port on my mobo got fried after a power surge through the coax cable so I had to get an usb to ethernet connector.

Every now and then I would lose internet connection, especially when I am downloading something at maximum speed. I have to disable my internet and enable it again for it to start back.

I always thought it was because of the usb to ethernet connector but it was norton. I look at my history and this is what I see:

Category: Firewall - Activities
Date & Time,Risk,Activity,Status,Recommended Action,Category
5/23/2015 2:08:46 PM,Info,	Rule  rejected  TCP(6)  traffic with  (0.0.0.0  Port (0) ),Detected,No Action Required,Firewall - Activities
	Firewall rule was matched:<br>	Rule Name: Default Block Windows File Sharing<br>	Rule Action: rejected<br>	Rule Severity: normal<br>	<br>	Traffic Details:<br>	Protocol:  TCP(6) <br>	Direction: inbound<br>	Local Host: <br>	Local IP: 192.168.1.113<br>	Local Service:  Port (139) <br>	Remote Host: <br>	Remote IP: 0.0.0.0<br>	Remote Service:  Port (0) <br>	Remote MAC:  -- <br>	Adapter Index: 0<br>	<br>	Process Information:<br>	Process ID: 4<br>	Process Path: System<br> 
Category: Firewall - Network and Connections
Date & Time,Risk,Activity,Status,Recommended Action,Category
5/23/2015 2:08:46 PM,Info,"Protecting your connection to a newly detected network on adapter \"ASIX AX88772 USB2.0 to Fast Ethernet Adapter\" (IP address: 192.168.1.113).",Detected,No Action Required,Firewall - Network and Connections
Protecting your connection to a newly detected network on adapter "ASIX AX88772 USB2.0 to Fast Ethernet Adapter" (IP address: 192.168.1.113). 

Category: Firewall - Network and Connections
Date & Time,Risk,Activity,Status,Recommended Action,Category
5/23/2015 2:08:46 PM,Info,"Protecting your connection to a newly detected network on adapter \"ASIX AX88772 USB2.0 to Fast Ethernet Adapter\" (IP address: fe80::b9ff:6824:c7a:1845%3).",Detected,No Action Required,Firewall - Network and Connections
Protecting your connection to a newly detected network on adapter "ASIX AX88772 USB2.0 to Fast Ethernet Adapter" (IP address: fe80::b9ff:6824:c7a:1845%3). 

It's SUPER annoying and I need this fix. Can anyone help? Thanks.