I have 4 commercial websites on the server. The ports I use are HTTP, HTTPS, FTP, POP, SMTP, PPTP and DNS.
I changed ISP and have a new router. Now my websites are not working. On the routers web page, I'm unable to assign computers on the network to a static IP address. The only option is to select "Static IP" and then either choose "Obtain an IP Address Automatically" or enter the IP address.
My websites have only ever worked when the ISP supplied a block of 4 static IP addresses. The personal computer had a dynamic WAN IP and the server had a static WAN IP.
I've tried setting the server using 1 static IP with previous ISP's. The personal computer and the server both had the same static WAN IP. The websites have never worked with this setup.
Please see diagram