Opnsense double nat As you know I have 2 options : (1) Configure the ISP provided router in bridged mode & then configure pfSense/OPNsense in pppoe mode. Does OPNSense also perform NAT by default? Is that a double NAT situation? If yes, what should I do to avoid double NAT until such a time when the OPNSense box (+switch(es)+WAP's) becomes the whole house router? Feb 17, 2023 · To fix double nat: "use IPv6 if your ISP has rolled it out yet - make sure the main router in the house does prefix delegation, your own router will request and receive a routed prefix -> no The best way to do Reflection NAT in the OPNsense is not to use the legacy Reflection options in (Advanced) Settings. Could the double nat be the cause ? May 7, 2018 · Has been testing NAT reflection on my env like this. I am assuming that the VPN allows me to ignore the double NAT problem, please let me know if this is not the case. 2) als Gateway eintragen oder man verwendet wiederum NAT auf der OpnSense, um das echte LAN hinter der Zwischen-LAN-IP der OpnSense zu verbergen. But if you do place OPNsense behind a FRITZ!Box, for example, you should make sure that the other router operates in bridge Mar 20, 2021 · What IP address is assigned to the WAN NIC of OPNsense? And how? With your setup you will probably need to do double NAT. How is the ISP's "external" IP being handled? Does your ISP route your external IP over both connections in a round robin fashion, or is it more like a failover, ie. Setup Logging¶ Edit the firewall rule that passes traffic for the NAT entry and enable logging. But I have double NAT, from the fritzbox and the opnsense. I suspected that LACP between my two switches was an issue, so I removed LACP and rebooted OPNsense and tried installing ZenArmor. 78 GATAWAY: 192. Apr 2, 2024 · I have recently set up OPNSense as a router in PPPOE mode. 1) -> Firewall (Asus, WAN IP from OPNsense 192. Jan 27, 2021 · Shuttle/Opnsense box IP 192. Mar 15, 2024 · opnsense 192. etc. Feb 14, 2024 · You don't need a virtual router. Oct 20, 2024 · Enter the Unbound server configured earlier in the OPNsense settings, opnsense-ip:5353. 21. A NAT port forward rule allows you to host a service inside your network such as a web server. Mar 2, 2021 · Anything I've tried to "double NAT" this traffic to another subnet, hoping to end up with the private subnet of the 1:1 NAT as the source IP hasn't worked. Here, you will see an overview of one-to-one rules. Been enjoying the system so far, but one of the hard requirements we are starting to face from our clients is that we need to be able to log NAT rules such that we can identify who made an outbound connection. My OPNsense WAN IP range is in the 10. (I didn't know it would affect WAN OUT directions too if I only put the WAN interface, without the WAN-dest-address). Original configuration was: Modem --- OpenWRT router with 192. Speedport Router of Deutsche Telekom (so double NAT) 2. The better option here if I understand this right, is to operate Opnsense as a transparent bridge to use it as a firewall only, and don't use it as a router at all. Jan 12, 2025 · Interface: WAN, Source: This Firewall, NAT Address: WAN address, Description: Default outbound NAT for Firewall to WAN; Interface: WAN, Source: LAN net, NAT Address: WAN address, Description: Default outbound NAT for LAN to WAN; Apply the above rules, then select "Manual outbound NAT rule generation" at the top to disable automatic rules. The advantage is that, for IPv4, I no longer have to use double-NAT, as my own OPNsense firewall can directly get the (dynamically assigned through PPPoE, but statically allocated at the ISP end) IPv4 WAN Aug 13, 2020 · The Speedport cannot do static routes so this is a double NAT scenario. For now i was able to solve it with createing a port forward in the fritz box to my pfsense (32400 -> 10. 2 , opnsense access to zabbix server but web service not access Sorry. 216/19 is the IP to opnsense firewall which I normally log into via `192. An overview of 1:1 NAT rules can be found here. Jan 12, 2024 · Doppeltes NAT und OPNsense im Heimnetzwerk: Ein komplexes Puzzle. 15. . Aug 9, 2024 · They all expect and use 192. My public-facing services are in the ISPs subnet. Create Source NAT (Outbound) rules that also target the PS5, with the same ports as the Destination NAT. Mar 1, 2021 · NAT Address: Public IP Address NAT Port: * Static Port: Checked And on the OPNSense install: Interface: WAN Source: 10. May 4, 2020 · Hey there, After upgrading from 2. I double checked my settings in the gateway, rebooted a few times and eventually the WAN IP on OPNsense dashboard was showing my public IP address. May 6, 2023 · Therefore, it's not a good solution to use double nat as a firewall (check double nat and double nat forum). OPNsense with 1 LAN port (static, several VLANs) EVERYTHING from inside LAN/VLAN works perfectly fine. May 1, 2024 · I think, it will only work if you are able to access the remote port via IPv4, e. 1) Double NAT isn't necessarily a problem unless you're hosting services and require port forwarding etc, then it becomes more of an issue, but even then you can put opnsense in the DMZ of your ISP router potentially. I turned off the router. Which worked fine with one tunnel running but I think that the rules it was auto creating were conflicting when it came to splitting different parts of my network over different client tunnels. It does not know about the networks behind your OpnSense. May 12, 2022 · based on this tutorial I started a setup of router cascade w/o double NAT. May 28, 2018 · no 802. Mar 9, 2024 · In order to access your real WAN (not DMZ), you obviously need NAT on the Huawei, but depending on how you do it, you need another NAT on your OpnSense (double NAT). Quote from: meyergru on September 10, 2024, 11:40:12 AM You cannot have 192. Apr 25, 2024 · For that NAT port forward - did you set the "Associated firewall rule" to "Pass"? I have tried those but it didn't works. 1 as a Manual SPD entry and it seems to work now. com from the Internet, everything works as expected If i do the same from the DMZ, it still works (reflection seems to work) Apr 18, 2024 · Why Recently, my fiber-to-the-home (FTTH) connection changed from a slighly easier DHCP based setup to an additional required authentication step using PPPoE to connect to the Internet. 192. You have a router there: OPNsense. Transparent (bridge) mode OPNsense is used widely too, mostly by those with restrictive uplink settings. So that the network address range 192. 1 for DHCP, DNS and gateway. However, when I disable NAT, I am unable to access any system on the edge router network from within the Opensense LAN network. Sorry for the late reply, got a chance to test this a bit more. The ASUS router acts as a WAN connection for opnsense. 5. Everything I value is in the inner subnet that opnsense firewalls and NATs. I called my ISP asking about a static IP thinking this would resolve my issue of being double NAT and they are not offering one yet but will be in the coming months. I have 2 routers, the first is an OPNsense VM and the second is a MikroTik, both have their own internet connection. This means primary router is setup with disabled NAT and additional routing rules. Sep 7, 2024 · I have an out-of-the-box OPNsense installation (24. Jan 27, 2022 · I have read several times that double nat in principle is bad and I understand the issues that it can brings. My LAN sits inside the opnsense network. I manage the network for a few offices that have crap service and no option but to double NAT, and they work fine. My network route is: Internet -> Modem -> OPNSense Box -> WAP. 1. Feb 24, 2023 · Modem -> Protectli OPNsense WAN -> LAN -> Switch 1 (PC 1 – monitors OPNsense etc. Sep 10, 2024 · Thank you for your quick response. Port forwards from Speedport to OPNsense works fine and I can access ALL services hosted on the OPNsense (WireGuard, OpenVPN . Let's assume that I have 2 routers: - ISP router, connected to internet on one side, providing a DMZ lan RJ45 on the other side. Started by Dehicks, April 15, 2023, 09:10:50 PM. 2 -> 2. I currently have a single box (Fiber ONT) plugged into my opnsense box. Jan 14, 2021 · So i had to switch to router mode. I haven't yet decided between pfSense & OPNsense. Previous topic - Next topic Sep 4, 2023 · I'm running OPNsense on a bare-metal dual-nic box and it's got a static IP. I do want to block any traffic coming from this private networks, but allow the CARP communications happen at the same time. g devices that that will hit the NAT rule with static port turned on. Oct 12, 2021 · To configure the One-to-One NAT in OPNsense you may navigate to Firewall → NAT → One-to-One. Best create two seperate networks and dont put both firewalls into the same vlan internally. One-to-one NAT will, as the name implies, translate two IPs one-to-one, rather than one-to-many as is most common. 1(ip my router) and web service 192. Du hast also mit der Fritzbox immer das erste mal NAT (außer die ist im Bridge Mode, dann gehen dahinter aber ohnehin keine 2 Router). Reflection for port forwards Automatic outbound NAT for Reflection (optional) go to Firewall / Aliases add new record I've just set up a firewall running OPNsense, mainly to wall off a web server from the rest of my network. So if you are double natting, don't. 0/24) and not the other VLAN networks (10. But I also need a second port forward where the destination match is "This firewall". The very, very best solution, though? IPv6. Create the same parallel infrastructure without overlap (internally). The problem is that I have some systems on the OPNsense network and others behind the MikroTik. 3. 127. This appears to work as my UPnP settings have no issues. Otherwise NAT doesn't work and it cannot route traffic. On a default setup, these settings are responsible for creating outbound nat rules when traffic leaves the interface and handle the return path using policy base routing rules (reply-to, route-to). ;) I get from my ISP a dynamic public IP address and my modem is in router mode. The other part is the Source NAT. As I mentioned earlier nearly all of the ISP's have so little IPV4 addresses that they universally adopted CG-NAT. And everything works. 0/24 for virtualised clients in Proxmox and physical clients connected either by cable or wifi. I port forward TCP 8443 from Internet to OPNsense in the Speedport and from WAN-Network to Server in the OPNsense. Before, it was up to 700 mbps without any problem. 1` Response You end up with a double NAT situation May 11, 2024 · First, double-NAT is a real issue, especially if you plan to open ports from your lap to the public internet. If both your sons play the same game at the same time this may pose a problem with with keeping an open NAT. Services, DHCP, Relay. 16. Here is the situation: I live in a house with 3 other people, and I setup my router behind the ISP's router in a Double-NAT configuration. Unfortunately for best results you need everybody using IPv6. Furthermore, note that it's a Apr 11, 2021 · Quote from: Andy112 on June 28, 2021, 04:20:53 PM Quote from: packet loss on April 12, 2021, 11:05:05 PMupnp should work for you. Feb 10, 2018 · Rather, I've configured the Fritz!box to have a dedicated Shared Port which is supposed to allow all ports available to the IP of the OPNSense Fireware. Example: Internet -> Firewall (OPNsense, WAN IP from ISP, LAN IP 192. 6 I noticed that the wan Interface no longer works, digging in the firewall logs I noticed that the traffic was being blocked as it came from private networks (the firewall is behind another one), Recognizing the hassle of allowing private networks on wan and disabling the default rules and making major changes to my setup, I The problem was plex was not acessible in my double nat. That being said NAT is not done on the RG in passthrough, only entries are added to the NAT session table. So i short words trying to achieve this kind of logic: Dedicated Server (Proxmox VE+ 1 Public IP) → (NAT) OPNsense + HAProxy → Other VMs connected to OPNsense LAN interface. Regards, S. I need to disable NAT on the Opnsense WAN interface. proper DMZ operation would pass incoming connection attempts, etc to the opnsense WAN. Per this guide, these are the ideal NAT types for consoles behind a firewall. My setup plugs directly into the openreach modem/ONT and can support PPPoE and 'option 61'. Dec 12, 2023 · Have you checked (and double checked) if you can configure a static route in your CPE. After that, back to the OPNSense administration dashboard. To get better NAT, the Destination NAT (Port Forward) is only one part of the puzzle. g. Bart Mar 14, 2022 · Of course if you are virtualizing the secondary OPNsense router like I am doing, Client 2 could simply be a virtual machine rather than a physically attached system. Aug 30, 2023 · I don't really want to buy new hardware, because the hardware I am using is quite new. The opnsense (where all traffic flows on it) is in dmz (i have mail- and webserver from the outside) Since i changed the way, i get max 100mbps passing via opnsense. There is no double NAT going on, the router is connected directly to a DOCSIS modem. Feb 14, 2022 · 1 OPNSense server (for the server network) 1 Wifi router (for mu local private network only for users) 1 proxmox server (with various servers on it but thats not important for now). Thats the best way to test things. The only problems I've found is that to do NAT reflection you have to create extra NAT rules, and if the ISP changes the public IP, which they usually do, could break some VoIP registers if you are using a PBX. I tried it on my fritzbox - works fine. If your OPNsense is your Internet gateway and your Asus is in double NAT - you can access OPNsense network from your Asus, but not Asus network from your OPNsense. 64. (2) Leave the ISP router as it is & just plug the CAT5 cable from the ISP router to the WAN interface of my pfSense/OPNsense box. 1/16 subnet and others on VLANs. I guess this is called double NAT which causes the issue. The Mar 20, 2024 · Entweder muss man in der Fritzbox eine Route auf das echte LAN mit der Zwischen-LAN-IP der OpnSense (z. 2) OPNsense runs DHCP 192. For a remote location I have some ASUS routers set like this, like AP, and all my clients, wired or wireless, are fully seen by OPNsense like all of them are directly connected to OPNsense May 16, 2017 · Double NAT is fine for your use case, with IPv6 if you have a large enough delegation from your ISP (better than /64). OPNsense with 1 WAN port (static) in Subnet of Speedport 3. However, if it's putting you on a private IP range and double NAT'ing you, I would try unchecking them just to verify. But it's less clear when it comes to use double nat through DMZ (sometimes called the poor man bridge mode). Jun 2, 2018 · There are good reasons to not want to use UPnP IMO but what option is the best I wont comment further on. Apr 11, 2023 · Firstly, I had Firewall > NAT > Outbound set to "Hybrid outbound NAT rule generation". we run Lagg trunks between the Juniper SRX on the wan side of the opnsense box and also on the Lan side to switches. 1). Disabled Outbound NAT on router 2. I've tried running a 1:1 NAT behind the first, as well as port forward NATs. I like to keep the ISP client because I use its outer subnet as my DMZ. In 2021, I would say that implementing IPv6 on your network is almost mandatory. I will however add how it is possible to get the same result (NAT type 2) without installing UPnP via Hybrid outbound NAT. IPV6 does not. You just have to setup a gateway in pfsense telling it to get to whatever your downstream networks are to send to the usg IP in our transit network 192. Idea of the shared address space is to avoid conflicts with private networks at CPE. It’s true that the gateway doesn’t NAT the traffic, but the concern here is that the gateway may stop accepting additional flows if its NAT table is full. 255 Private network Shared address space for communications between a service provider and its subscribers when using a carrier-grade NAT. Re: (double) NAT and IPSec Tunnel April 01, 2025, 04:35:49 PM #3 Ok, I don't know why but because you mentioned it I tried it again and added 1. The default OPNsense NAT is only for my LAN network (10. You either Need Double NAT or you must set up routes. Now click the 'Add' button to add a new NAT Port Forwarding rule. One-to-One NAT configuration in OPNsense. I found with my uPNP setup as above if I disable the NAT rule my NAT Type defaults to Type 3. Xbox networking has been 100% native IPv6 since the Xbox One (IPv4 is handled via Teredo tunneling), which means NAT status becomes irrelevant. Easy setup on almost all mobile clients using OPNsense’s Client Configuration Export. Apr 7, 2022 · I recently switched to 1 gig fiber server (local electric co-op). Intel N100, 4 x I226-V, 16 GByte The NAT will exit the default gateway of OPNSense. 1 -> OPNSense Configures an additional Interface there (double NAT most likely needed) - OPNSense VM: Configure 2nd IP as "Routed" to an Intermediary Network -> (double NAT most likely needed) Mar 8, 2017 · In the meantime I found the problem, but not the solution. I'll try the double NAT. 200:<port> address, which my ISP router does understand, because 192. Too difficult to troubleshoot all the variables with limited info Jun 21, 2021 · 我想在OPNsense上转发ICMP和特定的TCP和UDP端口，但是我无法找到一个简洁的解决方案。 具体来说，我想转发ICMP，http，https和UDP 32768-65535。 我在端口转发部分("Firewall>NAT>Port转发“)中添加了一个新的端口转发。 Sep 9, 2021 · OpnSense is connected behind it and I do have a double NAT for IPv4. (OPNsense) asign one Interface to a Static IP in the range of your fist Router , then on another Interface make a normal Local network , local DHCP range etc. are not double present both at your OPNsense level AND at ASUS router level. xx. One-to-One NAT-Konfiguration in OPNsense. Aug 16, 2023 · Anyway If this is the case for our OP of this thread, if really he is not able to put the BOX into Bride mode only way how to have this worked out with his current setup is to have the FrtizBox in Routed mode, OPN WAN set on Static IP from the LAN Pool FrtizBOX provides and disable on OPN NAT to avoid Double NAT situation. In diesem Beitrag tauchen wir in die Welt des Netzwerk-Hostings ein und beleuchten spezifische Herausforderungen: doppeltes NAT, den Einsatz von OPNsense und die Schwierigkeiten, die dynamische IP-Adressen mit sich bringen. Older ISP's who have enough IPV4 addresses either use Dynamic IP (which for me is fine May 22, 2024 · - Proxmox VE Host: Configure 2nd OPNSense IP as "Routed" -> NAT to another Linux Bridge say 192. We have one ISP connection shared amongst me and a handful of other tenants here and I don't trust them enough to just put the modem router in bridge mode and put OPN right behind it (since I'd have to physically move it into a public space). Step 1 - Add monitor IPs Jul 10, 2020 · So the WAN IP from the 2nd OPNSense is on the first one's LAN. I'm getting ready to start my journey in learning to use OpnSense. Double NAT is not a problem in passthrough mode. Apr 7, 2024 · So this is my first attempt to setup an OPNSense FW for my home network. Sep 16, 2019 · Packets get through from the internet to the LAN interface on OPNsense (used packet capture utility in OPNsense), but OpenVPN does not seem to be aware! I've deleted and re-configured the VPN server several times, followed the wizard, all pretty simple - I can't think of what i have misconfigured here. 2 for example. Mar 6, 2025 · If the ISP router is not in bridge mode, I assume it is performing NAT. Mar 20, 2019 · 2) OPNSense in routing: double NAT, which depending on what you are trying to do could involve the ISP's modem cooperation to work. Overall I rather prefer static port NAT rule than uPnP. Click the 'Firewall > NAT > Port Forward' menu on the left. Oct 25, 2017 · 5. The problem is when your double NAT'd is your lan address gets reported ex. 142] DOUBLE NAT IS PAIN. 0/24` subnet. That may be OK in your situation. 0 range (which is what I've set in my DHCP range) What I've observed: Nov 22, 2024 · Um das One-to-One NAT in OPNsense zu konfigurieren, navigieren Sie zu Firewall → NAT → One-to-One. Dec 31, 2017 · I'm thinking the ability to add a port range in Outbound NAT would make a good feature request. It worked, all good. 0/10 100. No issues with NAT without NAT-T. 2. Doppeltes NAT ist weg und Du kannst fein justieren was aus dem FritzBox Netz in Dein Netz hinter der OPNsense darf. 168. Jan 2, 2017 · Here is some quick settings if you want ddns, but you are double NAT'd (example you don't have access to the edge device, or its missing dynamic ddns ). Both are great firewalls though and in my case I initially only switched to OPNSense because of its WireGuard support (by the time you read this, pfSense will probably support WireGuard just as well, I think). Mar 24, 2021 · Wan IPv4 address xxx. You can see the line "use=web" below, thats what is needed to get your public ip. 0/16). Figure 2. Note they even call this out when creating a new interface group. Oct 26, 2018 · By the way CGN does not always use this kind of addresses, it is only used in double NAT scenarios (e. Feb 28, 2021 · Sometimes you can’t use the IPv6 addresses due to your ISP not being mature enough to provide IPv6 prefix delegation in combination with the lack of advanced features on the T-mobile 5G home router like ‘bridge mode’ you may be stuck with a double NAT situation. And also the firewall on both. Feb 19, 2024 · OPNSense is working fine with my Fritzbox plugged to my WAN port of course. Then you won't be doing any double NAT, configuration will be much simpler, and you can use your existing networks/subnets. PayPal Donation to support the release Aug 12, 2020 · 1. Jun 15, 2024 · If I set the gateway rule to "disabled", my NAT rules all spring into life and I can access my websites from my WAN, but I can no longer access the internet from my LAN. I followed this post from a few years ago and set up the miniupnp plugin. May 7, 2024 · The OPNsense firewall supports DHCP Option 61 and DHCPv6 PD and is fully compatible with Sky authentication. Sep 12, 2017 · Unlike Mobile Network operators who flock to ipv6 due to heavy shortage, ISP's have clutched the egregious abomination CG-NAT aka Double NAT. On the WAN side it is connected to an ISP provided router/modem. xxx. Nov 2, 2016 · It was released with OPNsense 16. On the LAN side I have all of my personal network on the `192. Feb 7, 2025 · So you'll need (at least) three interfaces on each OPNsense: WAN, LAN and the OPNsense-to-OPNsense link. I understand it's a double NAT. There is a isp router draytek in front of it and the opnsense is a dmz. The authentication string for DHCP Option 61 is 'anything@skydsl|anything', and you will not have double NAT with this setup. x, LAN IP 192. So if you have multiple WANs and are not using a WAN group, the WANs that have NATs and are not the default gateway will need the reply-to. 83 GATEWAY :192. Jan 22, 2025 · I'm starting to migrate my systems from pfSense to OPNsense. I'm on AT&T fiber using pfSense (but mulling converting over to OpnSense). SOLUTION. 0/24. Thats not good - I dont want that. He has a ASUS router as the main router and I have my lab behind the opnsense one. It's going to be running on a Dell Optiplex with one onboard network port and one 4-port PCIe network card. 0/24 as the inter-router LAN and 192. I realise I may miss out on any sky voic Oct 25, 2021 · Dual Wan and Portforward only working on active WAN (double Nat?) Started by fox-octi, October 25, 2021, 09:30:35 PM. Sep 12, 2023 · I am trying to segment my home network and am implementing Opnsense behind my ISP router/firewall (Edge router). 178. 3_1) virtualized in Proxmox and sitting behind an ISP router with its own NAT. WAN CARP IP would be configured as DMZ host then. Started by Niami, August 07, 2024, 08:03:12 PM. Question: How do I remove the double NAT issue with OPNSense being behind the Fritz!box to improve my network speeds? Sep 4, 2020 · My OPNsense firewall is behind my ISP's modem router (double NAT) for a couple of reasons. I set the WAN interface IPv6 as DHCPv6, Request only an IPv6 prefix, Send IPv6 prefix hint and Use IPv4 connectivity checked. All good. Then aktivate routing and make a NAT roule from Interface WAN to Interface LAN. Apr 27, 2024 · OPNSense is a great pfSense alternative! OPNSense is just as good (IMO) as pfSense – after years of using pfSense, OPNSense has now become my favorite though. Forward FTP Proxy (aka double NAT) only by using NAT for the server, without at least one FTP proxy, either reverse in front Dec 21, 2024 · In a small network setup chance that two ports would collide in regards of Static port feature is low. When I am double nat'd I have to use the 2 local LAN ips and not the wan IP My plan is to use my own firewall. Jan 2, 2017 · Yes, but since DHCP works in the layer 2 broadcast domain, you need to forward the request. I think now, this is a problem of natting opnsense and the modem. Now create the NAT Port Forwarding configuration for the HTTP service as below. the security policy on the SRX is setup to accept ALL subnets and NAT what it needs to and shovel what it needs to down the VPN rabbit holes. Yes. Feb 12, 2023 · Double NAT setup configuration 1) OPNsense gets a static ip from ISP router (192. 8. 2 on the WAN interface. 100. The BGW router that came with my install was awful - slow DNS, limited number of concurrent active connections etc. Dann muss man noch ein Transfernetzwerk zwischen der Fritzbox und der OPNsense einrichten, das nicht mit den Netzen hinter der OPNsense kollidiert und bei der Fritzbox die OPNsense als Router für diese eintragen. Feb 1, 2024 · Hello everyone, i am new to HAProxy and struggling for more than 3 days to make it works but unfortunately nothing achieved. That's exactly what I said. The setup essentially is: Internet>router1>opnsense>LAN. Lots of long threads on this but no simple answers. 1/20 network --- OPNSense router with 10. If you test NAT from the OPNsense the gateway is the opnsense. Entweder ist die OPNsense dann bei der FritzBox als Exposed Host deklariert oder Du leitest nur die Ports weiter, die wirklich gebraucht werden (mache ich eher so). When I create the port forward with destination "WAN-address or WAN-Network" pure nat does not work. Check if your ISP router has an option to pass its public IP address to OPNSense (AT&T’s gateways have that option), if you don’t have that option, then you will need to configure the forward-all or DMZ address to point to the OPNSense. Avoiding double NAT does not mean that OPNsense cannot be placed behind other routers – it can. You can create a NAT rule to only match a specific Alias, e. Aug 14, 2020 · In this video I'll show you the real world operations with NAT on 2 opensource firewall products: pfSense and OPNSense. So my WAN interfaces are a 192. 0 subnet with an 8 bit mask and opnsense runs a 10. From my understanding I have a double NAT. Both Xboxes has reported double NAT issue while I have played with the UPNP settings on both the WAP and OPNSense. Put R2 as an access point, disabling its dhcp, and keep R1 to manage the ips. My English is not good :) thanks my friend to help me May 5, 2022 · It depends on the next number, from Wikipedia: 100. I suspect that the Virgin Media Router could possibly be throttling pfsense/VPN tunnels, as I've run into similar issues with older Netgear routers. This is behind my ISP router with a double NAT, which I know isn't ideal but I don't really want to interfere with the rest of my network for the sake of my wife! Aug 26, 2017 · It would be simpler to just let pfsense do the nat and your ips. The Xfinity gateway is just another hop on your way out. Detailed working setting: go to Firewall / Settings / Advanced check these box. 7. Here in Argentina I've installed a number of OPNSense boxes wid double NAT and work just fine. Not ideal, but fine. Eine Übersicht über 1:1 NAT-Regeln finden Sie hier. I just came across a problem with Destiny 2 and Modern Warfare 2 on PC, as well as my Xbox Series X and S where it says that my NAT type is set to strict. Since it should be CGNAT+NAT, is there a way to at first allow all physical LAN-ports on this box to pass through firewalling, to have the gateway box function merely as a switch with NAT for internet? Nov 29, 2021 · OPNSENSE LAN: 192. IPv4 assigns addresses and is able to connect to the internet. To add new One-to-One NAT rules, you may click the + button in the upper right corner. Would it be possible to go with my first idea to add an unmanaged switch after the fiber converter and before my firewall? I don't want to Double-NAT and this seems like the easiest solution, although maybe I am overlooking something? Greatly appreciate any help! Hi All I have to leave with a double NAT. I have the plugin enabled and I believe I have Hello, I have an issue setting up Opnsense. The interface does get an IPv6 starting with 2804, so not a local one. It's probable their issues are not related to OPNsense, either in part or at all. B. Whether you configure VLANs on OPNsense itself or use multiple physical ports is up to you. 10. 1 router running on a Protectli FW2B. When I had the double NAT issue (when gateway wasn't doing passthrough to OPNsense router), I would see in the OPNsense dashboard that my WAN IP was 192. Also, my firewall optimization is set to "normal", see attached pictures. So i changed this setting to "Manual outbound NAT rule generation" Aug 7, 2024 · OPNSense behind ISP Router, can't access devices on ISP lan without double NAT. 200 is on the 192. X network Dec 1, 2024 · That means either a static route on the Asus router (pointing to your management interface's IP address), or you could do outbound NAT on OPNsense for the "work" network, which means double-NAT (because the Asus is doing NAT too). Over the past few days I have been configuring my new OPNSense box. Nov 20, 2024 · So I have been using Opnsense for years, but I have a roommate that talked me into doing a double nat for two routers. I have static internet connection from my ISP, coming in as PPPOE so there's no double NATing or double routing. X would be translated via nat into a 192. Nov 29, 2022 · By connecting your opnsense box's WAN to the router set up as DMZ, all inbound traffic should be getting passed to the opnsense box. Die opnSense kann vermutlich mit und ohne NAT auf deren WAN Port betrieben werden. My ISP router can't be set to bridge mode. Set your usg not to nat to avoid the double nat. Always test port forwards from outside the network, such as from a client in another location, or from a 3G/4G device. I can’t ping or access anything on the internet. Then I tried it on my opnsense - not working. The network diagram above is essentially the same as when I wrote about using a second OPNsense router with NAT enabled. 20. Save and Apply Changes. I hate comparing and hope no one takes offense but you can specify "Outbound NAT" port ranges like "27014:27050" in pfSense. As long as opnsense is set as default gateway for your networks, and firewall rules are configured to allow traffic, it will forward traffic just fine. DMZ is enabled for this IP. I'm getting NAT type 3. 1x or layer 3 routing going on in the switches. you are not behind CG-NAT or any type of double NAT, for that matter. 0/24) with IP 192. Router1 runs a 10. If you have spare interfaces on the OPNsense routers, it's probably easier to configure VLANs on the switches only. 78 my zabbix server 192. Oct 4, 2023 · Re: Double Router configuration - no internet access from second router - NAT? October 04, 2023, 09:50:46 PM #2 Last Edit : October 04, 2023, 10:33:31 PM by rosaormen Block Private network is turned off, as well as Block block bogon networks. 1 / 192. Dec 12, 2023 · Re: double nat design considerations? December 20, 2023, 02:20:34 PM #16 "Add associated rule" - I tried with and witout it (creating rule manually), no matter - still no dice. I don't know much about networking and so far have configured using different queries from the forum and some guide videos. Yet it can occur. Dual-Stack with non-public ip). Change IP to static on Xbox/Playstation; Firewall -> NAT -> Outbound: Set Mode to Hybrid outbound NAT rule generation I have an issue with Double NAT on my home network. So we're actually double NAT, since we want 192. A FritzBox for instance allows you to add such route, pointing a static route from your CPE towards your OPNsense box will eliminate any NAT requirements on OPNsense and so "Double NAT". But if your sevice provider communicates with you via shared address space both addresses (CPE and AFTR) don't have to be Apr 15, 2023 · OpenVPN cannot connect from lan side within double nat environment . Jan 19, 2022 · When you want to access Client 2, you will need to use the WAN IP address or WAN hostname of the OPNsense router rather than the internal IP address of Client 2. Previous topic - Next topic Dec 19, 2024 · NAT Reflection¶ Port forwards do not work internally unless NAT reflection has been enabled. The NAT port forward rule will translate the WAN address to the internal LAN address of Client 2. And security still depends on which ports are exposed, wich services and passwords are used. 130. I know creating an alias for the range works but in this case its just an unneeded extra step. 0/24 behind opnsense. Diese Konfiguration nennt sich Double-NAT und sollte, wenn möglich, vermieden Feb 27, 2019 · Hello, I just switched from PFSense to OpnSense, since my aging APU1D4 isn't going to be supported after the next update to PFSense. The visualization would look like this: clients ↔ OpenWRT router (no NAT) ↔ routing rules ↔ ISP router with NAT ↔ Internet Mar 24, 2023 · Hi, I have a problem with double port forwarding in a non-standard setup. Feb 23, 2021 · If the WAN is issuing a routed public IP, no need to uncheck those two options. 0 range (which is what it gets from the ISP router) My OPNsense LAN IP range is in the 172. Sep 14, 2024 · I did, however, want to avoid double NAT, a scenario where two cascaded routers each perform network address translation. now just use your 192. Conclusion: without knowing the exact goal, it's hard to help. 0–100. I would try setting up/labbing 2 pfsense machines on the same network and try to get a tunnel up and then compare OpenVPN vs IPSEC. May 6, 2024 · I have an OPNsense "router" (intel n200) and about to pull the trigger on Sky Broadband (currently with EE FTTP). Abbildung 2. Enable "Static Port" for them. Now that AdGuard Home is active and protecting the portion of the LAN behind the firewall. I'm sure there must be a simple solution to this, but I seem to be hitting a wall. 3/24 for the LAN and a public IP for the WAN. 100 ) on pfsense. Apr 18, 2023 · I have NAT Type Open on my Xbox Series X and NAT Type 2 on my PS5 using OPNsense. Nov 9, 2023 · Another option to condsider is to have another physical router doing just NAT, nothing else, then WAN interfaces of OPNsense HA cluster + CARP IP would be private NAT IPs. 255. So I got the PPPoE credentials from my ISP ("drei" in austria). This causes double NAT. com [172. This step is interesting in a specific case: using double NAT and no wifi access point connected to the OPNSense firewall/router. However if I stop the uPNP service everything continues to work with NAT Type 2. 102 as the endpoint IPs. 2:32400 ) and then forwarding 32400 to the plex server ( 10. Jan 23, 2017 · Hi all I noticed it is needed to also define WAN interface-addresses, if there should be NAT traffic from WAN into DMZ for example. (Unless xfinity does their own WAN-side double NAT, I don't even think that's a thing) Update 2: I got NAT to show as open now, this might have been because I had wifi as well as ethernet on on my PC and I had outbound NAT for the ethernet only. In this respect, it is similar to what NPT does for IPv6. 1 as transit network. 1 (set by opnsense LAN settings) Now I have Double-NAT situation which I don't want Tracing route to google. Oct 7, 2021 · I've been setting up my OPNsense router gradually, while it's been behind my main router. 0 subnet with a 24 bit mask. Initially I was doing double NAT on router 2, but I created a static route on router 1 to reach the networks on router 2. Your Huawei expects only a specific RFC1918 subnet on its LAN leg (you called that DMZ). Yes, it seems you're correct. Creating the NAT rules manually with Method 1 prevents unwanted traffic and makes auditing easy. With this how-to we’ll show you how to configure OPNsense’s SSL VPN for road warriors and give you configuration examples for: The FW02 is simply routing the traffic (no natting/double-nat) If i am trying to reach example. 3 and till 2. But that costs another device to maintain and another SPOF. It will effectively become non-elegant dual-NAT config. I might virtualize OpnSense as a VM on proxmox, since I run proxmox in my other server box. Jan 1, 2024 · NAT entsteht durch einen Router der NAT macht. 0/24 avrei esigenza di creare una vpn site to site e sono a conoscenza che in una situazione del genere mi trovo di fronte ad uno scenario di tipo "double NAT". Any ideas? Modem: Arris SB6190 OPNsense Box: Protectli FW2B WAP: WAC124 Nov 7, 2021 · Actually you don't need uPNP, my PS4 works perfectly with just that Nat -> Outbound rule. Nov 11, 2021 · In fact I have in the past when they had issues with accessing their webserver. Here the results: I connected the WAN to the ISP cable modem, and the LAN to the switch. Maybe its just a problem with our double NAT? May 29, 2021 · NAT Port Forward Rule. They have some funky virtualised setup that seems to cause odd behaviour (the reference to double NAT is a clue). It does create some problems with media streams and games. [Very important] All network services like DHCP, DNS, NAT etc. Added NAT rules for that traffic on router 1. , Eero wifi router – double-NAT, two-port LACP to router 2), -> Router 2 (PC2, two port LACP to Switch 1). There are routers rejecting routing to other internal IP addresses than the ones in their own LAN segment. In OPNsense, one-to-one NAT can be set up by navigating to Firewall ‣ NAT ‣ One-to-one. la VPN che vorrei utilizzare è WIREGAURD come plugin di OPNSENSE e lo stesso OPNSENSE quindi sarà client e server di un altro partitetico server. 152/32 (IP of server) Source Port: TCP/UDP/* Destination: * Destination Port: TCP/UDP/* NAT Address: WAN Address NAT Port: * Static Port: Checked And a Port Forward on the OPNSense router of; Interface: WAN Protocol: TCP/UDP Jun 6, 2024 · If you test NAT on pfsense the gateway is the pfsense. I have a similar setup in a datacenter and have noticed similar behavior (that setup is OPNsense running in a VM, also with static public IP) My port forward rule looks like this: Interface: WAN Protocol: tcp Source Address/Ports: * Destination: WAN Address Port: 80 Apr 14, 2020 · By the way, double NAT is not a problem. So I need to forward a port from OPNsense WAN to MikroTik LAN. However, I run a setup where I have my service provider's modem/router, with an opnsense firewall as a client. Go to the “Firewall > Rules > NAT > Port Forward” page to create a NAT port forward rule. The reply of a request to the server is by default subject to source port randomization and the Speedport would drop it. Sep 2, 2020 · NAT does not help in this case of course, but this is why I concluded NAT was required on the pfSense box. My computer is connected to the switch. 0. WAN <> iptables <> opnsense <> LAN. However, the approach is different since it will not Jun 19, 2023 · There is a firewall in between. Fine grained access control by using multiple servers or Client Specific Overrides. 217. 134. Apr 25, 2020 · Do you use double-NAT or routing between internet and OPNsense? Do you want to expose single ports to internal servers or complete access to all lan clients? First needs port forwarding, last VPN. Oct 11, 2020 · An der OPNsense wird dann SNAT deaktiviert. IP range should not be the same with the normal router. your opnsense box will, in default configuration, provide NAT to your LAN devices as well. Note that default for most firewalls (and OPNSense) is deny, so you need rules to allow traffic. 144. Step 4: Rule for opnsense WAN interface. Um neue One-to-One NAT-Regeln hinzuzufügen, können Sie auf die Schaltfläche + in der oberen rechten Ecke klicken. My ISP doesn't give me a IP on my FW, but theirs. Previous topic - Next topic May 21, 2022 · So I did some cleanup, and find I have to do 2 NAT port forward : as my real public IP is not assigned to my wan interface since my ISP box is doing NAT, I have an alias containing my real wan ip and one NAT port forward if dest is my real public IP. Die UDM macht auch zwangsweise NAT (daher doppeltes NAT). What does the packet loss look like on the WAN side? Turn on gateway monitoring and set a remote IP for your preferred DNS (1. The following fields are available when adding a 1:1 mapping rule: Nov 15, 2023 · No, the selected mode is "Automatic outbound NAT rule generation," but I can opt for a manual or hybrid mode if double NAT allows me to define all my rules from the OPNsense machine. Mar 13, 2024 · ## OPNsense Configuration I have an OPNsense 24. The double NAT is not a huge problem unless you need to connect in from the Internet, but port forwarding on the Xfinity box should be possible. in the the OPNSense VM, I used the DHCP to get the IP 10. Sep 4, 2024 · Doppeltes NAT kann man einfach dadurch vermeiden, dass man NAT auf der OPNsense abschaltet. 254. In the example below, assume there is a web server in the DMZ network. Thank you for the reply. nvzgeo eolqmv zzw vsqocjf xornfv vevwo gvdbtiz xfm fxfowh vyxlhxn