How do I check which ports are open on my router?

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Tags

1. #under
2. #netstat
3. #header
4. #command
5. #after
6. #enter
7. #locate
8. #entries
9. #ports
10. #seconds
11. #router
12. #close
13. #established
14. #computer
15. #state
16. #value
17. #prompt
18. #press
19. #these