Examples of DNAT, LANs, and Proxies
For the residential and small-business site, destination NAT is probably the most welcome addition to Linux NAT.
Host Forwarding
DNAT provides the host-forwarding capability that, until now, was available only through third-party solutions. For small sites with a single public IP address, DNAT allows incoming connections to local services to be transparently forwarded to a server running in a DMZ. Public services aren't required to run on the firewall machine.
With a single IP address, remote sites send client requests to the firewall machine. The firewall is the only local host that's visible to the Internet. The service (for example, a web or mail server) itself is hosted internally in a private network. ...
Get Linux Firewalls, Third Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
