Your DNS server?

Question

Computer networks

Good day.
I want to make a test environment in which there will be several servers (mail exchange or exim, skype for bussines, maybe a wiki site, etc.) that I want to make available from the outside by name without port forwarding. How can this be implemented? Only 1 white ip address is available.

Answer 1

- Pay for the domain and secondary (if you are lazy to set DNS, you can also pay for primary there)
- Raise your DNS server and specify it as primary, if not lazy
- Set up port forwarding on the router
- Make records in DNS like

nichego.net.     IN      A       1.2.3.4
                IN      MX      50      mail
www             IN      CNAME   nichego.net.
mail              IN       CNAME   nichego.net.

(and so on - up to seven CNAMEs in my opinion)

Answer 2

The easiest way, if you want to access your white IP by domain name, is to use Dynamic DNS services. Just make sure the service supports MX records if you want mail to work. Well, or buy a domain name, raise DNS on your IP and register your IP with the address of the DNS server, then all this disgrace will be completely under your control.

Answer 3

Put all servers on one physical server and connect it to the Internet with this IP address directly.
How would the problem be?

Answer 4

You need to decide what and how much you deploy. Will you be publishing OWA/ActiveSync/Outlook Anywhere or will it just be smtp? For example, for the same S4B Edge, three IPs are recommended - one for the Access Edge service, Web Conferencing Edge service, and A / V Edge service, but in principle it can be resolved by different ports. Plus, emnip, another reverse proxy address for publishing mobility.