What is the difference between route and nat

Active Oldest Votes. Improve this answer. Hannu Hannu 7, 3 3 gold badges 17 17 silver badges 33 33 bronze badges. I think I still need to delve a bit into it. Thanks anyway — jeysmith. And I do need set up networking at work, now and then. Now: Quickly write down details in your question; what it is you're after. If you cannot specify it, the Q will probably end up closed.

I thought that I finally had understood what NAT was about and used for IPv4 exhaustion problem, masquerade etc but I ran across this video: youtube. Why does he need to use NAT? Thanks — jeysmith. Have a look at en. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.

Viewed 3k times. Improve this question. Jake Wilson Jake Wilson 8, 26 26 gold badges 90 90 silver badges bronze badges. Add a comment. Active Oldest Votes. Improve this answer. Kyle Brandt Kyle Brandt And if I wanted to just control whether certain services that pass through the router are accepted or denied, I use Policy?

Policy: Generally, yes this would be what is permited or blocked, I think it is not to be confused with Policy based routing. It sounds to me for the level of stuff you are trying to do, you might want to go learn iptables and fundemental networking well before going into fwbuilder. This will probably give you a better understanding in the long run even it ends up taking a little bit more time. Policy , NAT , and Routing are fwbuilder terms. Sign up or log in Sign up using Google.

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Web server, FTP server, mail server, and so on. The standard NAT setup gives the advantage of "cheap" security-protection for your network, since computers on the external side ie. Most NAT devices allow you to create maps between the Internet and your computer network - this is called port forwarding.

A special mapping can be set up to send that request from the Internet to a specific computer on your network. One of your LAN computers could host a Web server on the Internet, and another computer or the same one could host an FTP server because the two services work on different ports.

The Routed IP system is set up as a way of putting a machine or machines on the Internet that require a public address in addition to the router serving the connection.

Routed IP allows devices like Web servers, mail servers, and any other publicly-accessible machine, to be easily configured to have two-way connectivity ie.

The standard Routed IP setup would be used when there is a requirement for a publicly-accessible computer, such as a mailserver, Web server, FTP-server, and suchlike. Using Routed-IP in this manner gives the choice of having the "servers" either behind a hardware-firewall or simply plugged directly into the router itself; both methods would give the option of the server having its own publicly accessible IP address.

When used as standard, yes, because the public IP addresses will be accessible from the Internet. In order for a Routed-IP connection to be as secure as a NAT connection assuming that the routers involved do not protect the network in any way , it is normally advised that a hardware firewall be placed in between the router and the internal network, so as to protect the network from malicious "attacks".