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What is confusing for users is the devices that only have 1 ethernet port but still do nat, etc.
![untangle firewall alternative untangle firewall alternative](https://www.untangle.com/wp-content/uploads/command-center/cc-sdwan.png)
When they say modem you have to check - since most likely its not just a modem but a gateway - nat is prob going on. If they say router, its safe to assume nat. In the home broadband market, the terms makers and ISP uses for devices can be frustrating when dealing with the customers. when a ISP gives the user what they call a "modem" its rarely the case except for cable - I would call it a gateway (modem/router combo). And then its rare that you can even turn it off. I deal alot with home users and when you say router, its pretty much a given that NAT is being done, I have never seen one that was not setup for NAT out of the box. Your use of the term isp router is the confusing part, to the home user – which is why I brought it up. My setup I described in no shape or form is doing NAT twice. There is nothing wrong with doing NAT twice if you know what you are doing. I have successfully done NAT numerouse times at the gateway level, but only for the fact of port knocking and triggering to redirect to a different network from the edge firewall. I do have additional security appliances further in my network that will NAT or PAT a second time to hide addtional internal networks. At no point and time do I perform NAT twice. My router is simply in passthrough mode, which means I can assign a public IP to the WAN interface of my pfsense box, and all traffic is routed/passthrough my ISP router/modem. It simply routes traffic wether it does NAT or not. The modem AKA router would still have a mangement IP on it either way. ISP in general is your "Internet Service Provider", which I assume you know. Some Routers/Modems do NAT some do pass through, some even act as home wireless devices if requested from your ISP.
![untangle firewall alternative untangle firewall alternative](https://i.redd.it/jqva1q6v2p271.png)
ISP Router or Modem means the same thing. The IP assigned to the Untangle system will only be there for management reasons! You will want to point your machine gateway to the pfsense LAN IP and not the Untangle management IP.Įxample: Internet <- ISP router <- WAN Interface IP <- pfSense <- LAN Interface IP 192.168.1.1 <- Untangle Management IP 192.168.1.2 <- Internal Network. Your pfsense box will have the internal local IP, which would be your gateway IP and will either do DHCP or Have a static IP on the WAN/Internet interface.ĭo not set your host to point at the Untangle system IP for a gateway. Your Untangle box will only have 1 local IP assigned to it for management purposes. You set your pfsense box as the DHCP server which can pass seamlessly through the transparent Untangle system to your Internal Host. The pfsense system is what will be doing all your NAT and Firewalling from the Internet. The pfsense system will be in front of your Untangle system. This will pass all traffic through the Untangle system as if it is not even there, but you still get all the great filtering aspects of it. You will want to choose Transparent mode.
#UNTANGLE FIREWALL ALTERNATIVE INSTALL#
The default install of an Untangle system will ask if you want to install the system as a router firewall or in transparent bridge mode. One machine is for pfsense and the other machine is for the Untangle. You will need at least 2 machines with 2 networks cards in both machines LAN/WAN. Internet ISP Router pfSense Untangle In Transparent Mode LAN So here is an example of how I have things setup: