01-25-2021 07:49 PM - edited 01-25-2021 07:57 PM
Hi experts. May I seek your wisdom on the problem I encountered. I want to forward port from my external IP 122.52.xxx.xxx with port 7920 to my internal IP 10.10.xx.xx with port 1433. The image below describes the things I have done in cisco rv340w.
And this is my Forwarding Table
I already have an allowable inbound/outbound rule of windows firewall of these ports to the recipient device of my internal IP but still the 7920 port is not open if I telnet my external IP using external network just to test if the 7920 is open.
Any help would be greatly appreciated.
01-26-2021 11:55 PM
Hi,
It seems like you are forwarding that port for Database Engine (SQL). You may check the following things:
01-28-2021 06:06 PM
The red arrow points the 3 ports denied by the system. I set up the first two and according to the forum I got from other informative sites is that after I allow ports to be opened, I should immediate deny it afterwards, hence the first two denied ports. However, the third red arrow points to the system generated denial of port. The problem with this is that I am not allowed to edit or disable the rule of denying ports. Maybe, you could look into this. Thank you very much for helping me Sujoy Paria.
01-29-2021 06:03 AM
Hi,
Even though you have dedicated WAN IP from your ISP which is pinging from Internet, still there is a possibility ISP may block some of the ports. If feasible, you may test the ISP connectivity directly (as mentioned in my previous comment) during off business hours.
On this Router, ACL with priority 4001 and 4002 are not editable as those are generated by system. If possible, you may check the status once (for testing purpose) by disabling (uncheck the Enable checkbox) the ACL rule with priority 3 and 4.
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