What port are not usable whan I use the DDoS filter

The filter build to for ip protection. It use allot of differtent BGP, modification and justification techniques based on real human usage, and not based on useage by other computers (like management or monitorring or else). To avoid really simple attacks, a short list of ports like below will be also blocked by default:

  • destination-port: 1234
  • source-port: 1900
  • source-port: 123
  • source-port: 27960
  • source-port: 27015
  • source-port: 1024
  • source-port: 3072
  • destination-port: 27665
  • destination-port: 65000
  • source-port: 27665
  • source-port: 1524
  • destination-port: 1524
  • source-port: 1900
  • destination-port: 80
  • destination-port: 443
  • source-port: 19
  • source-port: 161
  • source-port: 27960
  • source-port: 27015
  • source-port: 17
  • source-port: 123
  • source-port: 69
  • source-port: 3072
  • source-port: 1024
  • destination-port: 27444
  • destination-port: 31335
  • destination-port: 27665
  • destination-port: 1434

If you do want to use this list you should read the other knowledgebase article whare you can read what to do for monitrring ip's.


- Some of theese line could look a bit strange. But keep in mind that in combination with our used techniques and past experience they are used.
- This list can change one a while.
  • 5 Users Found This Useful
Was this answer helpful?

Related Articles

Auto null settings are not working anymore. Why?

After you add a ip (subnet) to the DDoS filter, your auto null settings does nto work anymore....

DDoS filter general FAQ's

Where are your filtering node located? The  filtering nodes are located in 2 locations in the...

Does my GRE tunnel allow me to announce my ip subnets to the internet?

Yes. When you using a GRE tunnel to connect your external router to the DDoS cleaning street, it...

Howto: BGP layer 3 configuration for the DDoS filter

The DDoS filter is capable to filter also Layer 3 BGP traffic. And the principle is the same, you...

I have a DDoS on a shared hosting server with a single ip. Can you see on what website it is targeted to?

Yes. If you have a ddos on a shared hosting website url what is hosted on a server what is using...