Forum Discussion
When can I JUST use TM internet modem as ONLY a modem, in BRIDGE mode, with NO NAT, NO firewall, and frankly NO Wifi.
PLEASE let me know when can get a PLAIN modem from T-Mobile, or BUY my own modem, or SET their modem up to DUPLICATE the functionality of Spectrum. I can't and won't change, until and unless I can ...
464XLAT/CGNAT topology breaks all the use cases people are citing when asking for this change.
This approach, by design, is not there to provide typical dual stack functionality. It basically cannot do it without specific care taken for additional translation/preservation of details needed to provide the desired NAT functionality.
Makes bridge mode/port forward options irrelevant because it breaks everything in higher layers.
Even the older Askey LTE only model that provides most every typical router functionality (sans bridge mode) cannot resolve the issues. Not even the DMZ option would resolve things properly.
Unsolicited inbound traffic is filtered/blocked at a higher layer, so packets never even make it to the modem in the first place.
Search on the terms bridge mode or port forward. You will get a LOT of hits dating back a year or longer about this problem.
There have been hints/rumors/hearsay that changes to their stack MAY eventually come that could resolve issues, but nothing has been officially stated.
Until such time, about the only thing people can do is pay extra for third party workarounds, like perhaps a VPN service that supports P2P properly enough to allow you to assign specific ports to forward through that VPN.
