Port Forwarding Problems - C7000-100NAS

[kgrochowik]

I have a C7000-100NAS modem/router combo. I have port forwarded (not on this unit) several hundred times on various models/makes of routers and until now I cannot figure this thing out. I am trying to forward a few ports (4369, 8100) and everytime I check a port tool they show closed. I have the most recent firmware, have performed a reboot and factory reset/default, unchecked ipv4 firewall disable, messed with upnp, usb, and other settings and nothing seems to work. I can forward one port if i enter an ip of one of the devices into the DMZ server field but that only works for one IP. Help Please!?!?!?!?

[vkdelta]

did you try checking the ports via OUTSIDE connection? (not from home).

such as LTE or other network. 

[kgrochowik]

Yes, no difference

[vkdelta]

which FW? which ISP?

[kgrochowik]

1.01.15

Charter Communications

[438hp]

I am having the exact same problem. The modem/router did accept UPNP from my computer but then dropped it for no reason. Now, UPNP doesn't work nor does port forwarding.

[438hp]

Not sure why, but port forwarding is working now.