Unable to forward port on "tp link archer c6"

m using my own local Ubuntu server 18.04, and trying to host that world wide. i am also using Tp link Archer c6 rourter for port forwarding. I can forward port 21, but unable to forward any of others.

I am unable to find any of solutions on web.Please solve it as fast as you can.

1 Sorted by: Reset to default

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