Hi guys,
My Environment is network with firewall ASA 5510 (ASA VERSION 9.1(3) and ASDM Version 7.1(6))
I setup a reverse proxy for my Mail Server.
This reverse proxy will be exposed directly to the outside with a public IP (located in the DMZ of the firewall).
It will be used to expose the services https mail server (web mail and smartphones). in this way I do not directly expose the Mail Server but I have this reverse proxy as a "shield."
However, for sending the Mail Server you must be present on the outside with the same public IP address of the reverse proxy for the part SMTP (because our anti-spam service provides only received email from a specific IP of our company).
How can I configure my firewall on this solution. In short words:
- HTTPS reverse proxy in the DMZ with public IP x.x.x.x;
- SMTP Mail Server on LAN with x.x.x.x public IP;
What is the correct configuration for NAT server and forward correctly port SMTP and HTTPS?
Thank you!
