Web Server - ISP - Router Problem

[penumbra]

About a month ago I contacted my ISP and asked if I could run my own web server on my basic residential cable internet account. I received an e-mail back which said they would not prohibit it but they would not provide support for the web server. With that I set my computer up with IIS 6.0 and started hosting several small websites, primarily for testing purposes, which received minimal incoming traffic. Everything was going great until this past weekend on Sunday afternoon when I tried to access one of my web pages and the browser could not find the site and returned a "Connection Failed" error page. After this error I tried the rest of my websites and they all returned the same error. Something is broken.

At that point I went into trouble shooting mode. I rebooted my web server, restarted my Motorola cable modem and Motorola wireless router, but still could not access the pages via the browser. The only thing I can think is that 1) my ISP has shut down my webserver or 2) something changed on their end which my system doesn't like. I read on my ISP's home page that they are planning an upgrade for the end of June so if they could have changed something on their end. If so:

When I rebooted my router I assumed the IP address would change, but it doesn't. If my ISP has changed something on their end that would require a new IP address, does my router's IP address need to change with it? If my ISP has blocked incoming port 80, is there a way around this to allow visitors access back my websites? I haven’t contacted my ISP because they said they don’t provide support.

[YeOldeStonecat]

Can you access your webserver from your local network? Via LAN IP address?
Example, \\myserver\mywebsite, or \192.168.1.2\mywebsite?

How were you connecting from the internet before? Via IP address? Or did you setup a dyndns account? If it's IP address, easy enough to check, just look at the status section of your router, compare the current WAN IP address with what you were using before.

[penumbra]

Can you access your webserver from your local network? Via LAN IP address?
Example, \\myserver\mywebsite, or \192.168.1.2\mywebsite?
Yes. I can access my pages by typing \\myserver:1\website. I tried this first to make sure IIS was working properly on my server.



How were you connecting from the internet before? Via IP address? Or did you setup a dyndns account? If it's IP address, easy enough to check, just look at the status section of your router, compare the current WAN IP address with what you were using before.
Before I had my router forwarding incoming traffic to my webserver located at 192.168.10.20 on port 1. I could type my routers IP address, for example 63.123.45.67 and it would forward traffic to my web server. The current IP address still says 63.123.45.67 and even after unplugging the router and hitting the reset key in the back the IP address does not change. Should it change when I do this?