AFAIK, the Cox router can be configured to either run DHCP or as a Static IP address. Either way, it can only listen to one IP. They do run DHCP from the local hubs, but the IPs themselves rarely change, and you’re sharing them with the whole neighborhood.

Most hosting providers share a single IP among multiple accounts coming into a server. There are two separate IPs for DNS hosting on a totally different server. If you want your own dedicated IP for your account, you can usually get it. But I can’t think of any that let you set up a separate IP for individual services unless they’re on separate servers in different facilities. I’ve had hosting accounts where they share a pool of IPs among hosting accounts, and I’d have up to 6 IPs, but each account only had one IP and all of the services used that one IP.

The only situations I’ve heard where people are using multiple IPs is to have backup internet providers, like Cox, CenturyLink, etc, in case one of them goes down. In those cases, you need a router designed to handle multiple (usually two) WAN ports where one is primary and the other is a failover.

-David Schwartz




On Jul 9, 2023, at 12:33 PM, Keith Smith via PLUG-discuss <plug-discuss@lists.phxlinux.org> wrote:

Hi,

Was looking at the raspberrypi this morning and it brought me to the same place I have come to several times in the post.

I have a business account with Cox Cable which allows me to run 1 or more servers.  Last year I used an old laptop to make a web server using Ubuntu, Apache, MySQL, PHP, plus Postfix and dovecot, plus BIND.  I'm a PHP dev so I felt pretty good about that achievement.

I only have 1 public IP and everything on my network has a private IP.  I used port forwarding to get the web server to work.

Supposedly I can get multiple IPs from Cox.  On several occasions I've asked the level 1 how I would configure 1 or more servers on the public IPs they can provide and they do not know how.

At some point in the future I'm thinking I'd like to create a publicly facing group of PIs to run as a web server (or maybe more)... 1 for HTTPS, 1 for DNS, 1 for mail, and 1 for MySQL (on a private IP ?).

I assume I would use the Cisco gizmo that has coax in and RJ45 out... the out would go into a small switch which would route each IP to the appropriate PI based on the BIND config.  I assume I can plug my Netgear router into the switch that currently has multiple devices connected to it on private IPs, and which provides WIFI.

I assume I can add a router in between the Cisco (modem?) and my Netgear and everything would work as it does now.  The added router would then be in place to deal with any additional IP address that Cox would provide?

Thanks in advance for any help!!

Keith
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