rbsorensen said:
If there were conflicts I wouldn't be able to access the internet and post this response to you.
No, not quite. You can have IP conflicts and still route traffic in. It's the outbound HTTP request that isn't getting anywhere.
rbsorensen said:
What I am thinking is that Cox possibly changes the router setup to block access after installation.
If so, that is the first time I have ever heard of that occurring, and it shouldn't be that way. Maybe try disconnecting the coaxial from the gateway, do a factory default, and see if you can access it that way? As long as they haven't messed with the firmware, then it should act as if it came out of the box. If the gateway works then, and then stops working after connecting the cable, then you know you are right. At that point I would ask a Cox moderator here, or call Cox, and ask why it's doing that. Or even swap it out for a different one.