Which ports are blocked?

For security reasons, we have permanently blocked the following ports on our network for both incoming and outgoing connections:

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

These ports are commonly used for malicious activity such as DDoS attacks, and the blocks cannot be removed.

  • ports, blocked
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