DEV Community


Discussion on: What is DNS? What happens after you click

digdugprophetie profile image
ادريس م

Would add that DNS uses UDP in general, but requires TCP to be open for certain transactions- notably when requests return large responses. Network admins only opening UDP53 toward the server can end up with user complaints that DNS fails intermittently.

mayankjoshi profile image
mayank joshi Author

Thank you for such a great insight.

Forem Open with the Forem app