Member Avatar for StrikerX

Hi guyz ,
i don't know if it's the right place to post this thread at .anyway , I've
router "Repotec", and i'm trying to forward a port .
i tried this :
Disable the firewall .
NAT -> Virtual Servers -> Adding the Port and save it . it doesn't work :)

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  • Latest Post Latest Post by DimaYasny

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Quick checklist that follows what tried and what and hinted at — focused on the usual causes when a forwarded port still seems closed.

  • Verify the server actually accepts external connections: on the host, confirm the service is running and listening on the correct interface (not only on 127.0.0.1). On Linux use ss -tulpn | grep :<port> and on Windows netstat -ano | find ":<port>" to see which address and PID are bound.
  • Give the server a fixed LAN address (static IP or DHCP reservation) so the router forward always targets the same internal IP.
  • Make sure the host OS firewall has an explicit inbound rule for that port/protocol (TCP vs UDP). Adding a rule is safer and clearer than toggling the firewall on/off.
  • Check the router WAN address. If it is in a private range (10.x.x.x, 192.168.x.x, 172.16–172.31, or 100.64.0.0/10) the ISP may be using carrier-grade NAT and inbound forwards will not work without a public IP from the ISP (details on CGNAT at Cloudflare).
  • Test from outside your network (not from a LAN machine). Use an external port checker or a remote machine to connect; a local test can give false positives. A quick online tester is available at YouGetSignal.

If the WAN IP is private or you find another upstream router/modem, contact the ISP about a public IP or use an outbound tunnel (reverse SSH/ngrok-style) as a workaround. Keep exposed services minimal and protected with strong authentication.

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Member Avatar for tom curren

Good firewalls are hard to find. What is the name of yours?

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