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If your network is working well without it, keep it blocked.
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If your network is working well without it, keep it blocked.

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Could I please get an explanation why my DNS server would be attempting to send all this UDP traffic out?
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Could I please get an explanation why my DNS server would be attempting to send all this UDP traffic out?

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If you want to minimize upd traffic :<br />
<br />
1. Disable service &quot;NetBios TCP/IP helper&quot;<br />
2. Check Advanced properties of TCP/IP connection and Disable Netbios.<br />
<br />

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If you want to minimize upd traffic :

1. Disable service "NetBios TCP/IP helper"
2. Check Advanced properties of TCP/IP connection and Disable Netbios.



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<div class="content wysiwyg-content">
Should I allow Netbios UDP port 137 out on our primary DNS server?? &nbsp;Could I get an explanation on why this would or wouldnt be needed. &nbsp;I am just seeing a lot of outgoing traffic on port 137.<br />
<br />
Thanks
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Should I allow Netbios UDP port 137 out on our primary DNS server??  Could I get an explanation on why this would or wouldnt be needed.  I am just seeing a lot of outgoing traffic on port 137.

Thanks

Should I allow Netbios UDP port 137 out on our primary DNS server??

The Internet Protocol (IP) is the principal communications protocol in the Internet protocol suite for relaying datagrams across network boundaries, organized in abstraction layers, traditionally called "Link," "Internet," "Transport" and "Application”. Its routing function enables internetworking, and essentially establishes the Internet. IP defines packet structures that encapsulate the data to be delivered. It also defines addressing methods that are used to label the datagram with source and destination information.

Internet Protocols

Hardware-based firewalls provide more sophisticated protection for inbound and outbound traffic than the simple Windows software firewall or the basic NAT firewalls found in routers. These devices implement techniques such as stateful packet inspection, deep packet inspection, and content filtering; and may include built-in antivirus and anti-malware protection.

Hardware Firewalls

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.