Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I am an indie browser mmorpg game developer. I am not using any streaming. Everything is http , web service or ftp.

Now my question is does my server use any UDP packets? I just recently got ddos attack and planning to block all udp packets at network layer if possible.

  • Windows server 2008 r2
  • .net Framework 4.0
share|improve this question

closed as not a real question by Nifle, 8088, Renan, Diogo, Mokubai Aug 6 '12 at 17:40

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

up vote 1 down vote accepted


HTTP runs only over TCP... so for HTTP access to your server you dont need any UDP ports. FTP also uses TCP only (TFTP uses UDP Ports) and your WebService (i think you are using WCF or soap) also runs over the HTTP protocol on your IIS.. so also no - (only if you are working with Windows-Authentication and ActiveDirectory with your WCF, then the IIS has to communicate with the ADS-Server (outgoing udp's), but i think that server is in your environment.. ;) - so u can block external udp packets

share|improve this answer

Not the answer you're looking for? Browse other questions tagged .