Which ports are blocked?

We block the following ports on our whole network both for incoming and outgoing connections, these are commonly used for malicious activity such as DDoS attacks.

  • TCP & UDP port 17
  • TCP & UDP port 19
  • TCP & UDP port 111
  • TCP & UDP port 1900
  • UDP port 11211
  • UDP port 53413


These blocks are permanent, and cannot be removed.


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