Port forwarding USGFLEX200 issue

Carlo · August 2023

Hi all,

I am trying to redirect port 7980 to a lan IP of 192.168.1.30

Everything works well on the LAN and the device is responsive on port 80.

However, when I try to access the device from the WAN it looks like the port forwarding is not working correctly.

the broadband in WAN_1 is a dsl line and there aren’t any filter on it.

any advice?

Carlo · August 2023

not sure what the problem was but I removed all the NAT rules from the Nebula portal, re-added the only rule I needed for the NVR and it just worked straight away.

Must have been a bug with the Nebula portal.

mMontana · August 2023

USGFlex 200 firewall allow connection from wan to port 80 of 192.168.1.30?

Does the firewall on device at 192.168.1.30 read connections from outside the LAN?

Carlo · August 2023

https://community.zyxel.com/en/discussion/comment/56117#Comment_56117

yes, device NVR on 192.168.1.30 used to work with exactly the same config with a different router.

Carlo · August 2023

anyone that can help here? It must be an issue with either the nebula portal or the firewall.

mMontana · August 2023

Sorry… again:

USGFlex 200 firewall allow connection from wan to port 80 of 192.168.1.30?
You have a specific firewall rule to allow that?
Side question: USGFlex 200 firewall allow connection from wan on port 7980?

Carlo · August 2023

https://community.zyxel.com/en/discussion/comment/56238#Comment_56238

Sorry @mMontana I misread your question.

yes, USGFLEX200 has a FULL OPEN policy for testing purposes.

what do you mean by:

Side question: USGFlex 200 firewall allow connection from wan on port 7980?

PeterUK · August 2023

So…if you do NAT 80 to 80 it works but not NAT 7980 to 80?

Carlo · August 2023

https://community.zyxel.com/en/discussion/comment/56247#Comment_56247

from my_device on LAN to 192.168.1.30:80 it works perfectly.

From my_remote_device to WAN_IP:7980 doesn’t work.

PeterUK · August 2023

but does port 80 to 80 work?

could uplink wan1 be wrong for dsl line?

Carlo · August 2023

not sure what the problem was but I removed all the NAT rules from the Nebula portal, re-added the only rule I needed for the NVR and it just worked straight away.

Must have been a bug with the Nebula portal.