when i signed up for verizon fios maybe.. 3-4 years ago, they blocked http port(s). i'm not sure if they still do. also, the author makes the point that you qu

when i signed up for verizon fios maybe.. 3-4 years ago, they blocked http port(s). i'm not sure if they still do. also, the author makes the point that you quote, >> You may not have a public IP, and if you do, it likely changes from time to time. you then go and deny this claim and contradict yourself, > generally do not change IPs frequently (unless your router/modem is restarted) That's the point the author is making. How frequent and what may cause it doesn't matter, the point is, your IP address will change. When it does and if you ignored that in your infrastructure, you'll have problems. Regardless of how frequently it happens, you have to deal with dynamic IPs.