On Fri, 25 Mar 2022 at 23:30, Jack Craig <jack.craig.aptos@gmail.com> wrote:

i have a networking mystery ; i hope someone might give me a clue.

i am working to restore a web server to internet access that is failing after att update 
the att older modem (pace 5238ac) with arris BGW210-700.


Did it come with manuals (or URL's for manuals)?

The BGW210-700 Broadband Gateway hardware platform can host different software. 
The Advanced Residential Gateway supports VoIP, IPv6, video delivery, security firewall, 
and extensive remote management features.  The BGW210-700 Broadband Gateway 
delivers robust video, primary line telephony, and high-speed data over broadband networks 
via high-speed Internet connectivity. The four Gigabit Ethernet ports can be separated into 
different services allowing the configuration of dedicated ports for data. 

The Ask ARRIS web site gives you web access to service and support tools. You will 
need to register using your support contract ID and email address. Ask ARRIS is located at:

 
Unless another community member has encountered the same hardware and use case, you 
are going to need a proper technical manual. 


i have a static ip from att in the range 108.220.213.0/255.255.255.248, 108.220.213.121 is the external ip for the server.

the bgw210-700 is the primary router/modem and is connected to a 3rd party router, netgear nighthawk,


You might be able to relegate firewall duties to the NetGear box:


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--
George N. White III