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Does the CM1000v2 cable modem have a firewall?
When I scan two specific ports from outside my home they show as blocked. nmap -Pn -T4 -p 25,9000 "IP address" Starting Nmap 6.40 ( http://nmap.org ) at 2022-01-03 16:54 UTC Nmap scan report fo...
CM series modems are modems only. No built in router or firelwall. If you have the CM series modem, you'll need to connect a external wifi router to the modem then configure as needed. Most current router firewall are all automatic with little or no user configurations needed.
If you need a actual firewall applicance device, then you need to connect a firewall device. Do a search as there are many. Sorry, I can't recommend anything.
FURRYe38, would you know why my other post into Home Networking > WiFi Routers > Nighthawk WiFi Routers doesn't show up?
It has some of the same information (nmap results) in it as this thread. Its title is similar "Netgear R6400v2 firewall query" in that only the model number changed. Does that kind of similarity trigger this forum to drop the post?
Thanks....
Possible. Might try "R6400 port foward configuration" as a title and post.
Remove the firewall data also...
For your R6400, please post in this forum:
https://community.netgear.com/t5/General-WiFi-Routers-Non/bd-p/home-wifi-routers-general
Thank you.