Pfsense high availability one public ip. Determine IP Address Assignments The .

Pfsense high availability one public ip. Is it possible to configure both pfsense box to have 2 WAN without using CARP virtual IP? What's the purpose of converting a public IP into a VIP? In this video I show how to perform OPNSense 'HA' using a single VM and 1 IP. Is there a solution for this? Nov 10, 2015 · Our guide to creating a HAProxy high-availability / load balanced web server with pfSense. Double NAT is definitely ugly, but it may be better to by Jun 20, 2016 · I read the documentation, and it looks like I'll need 3 public IP for each box (two for the WAN and one for sync). Conceptually, this is HA config for WAN/public /29 - does each box really need it's own public IP if I only admin it from the LAN side? I have a pair of pfsense boxes. 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 I have been using Pfsense for the last 10 years, i am interested in setting up high availability so that if I need to reboot the pfsense box (or it crashes/hardware fails) the backup pfsense server takes over. Aug 25, 2025 · Some types of interfaces on pfSense® software can utilize more than one IP address at a time. Jul 23, 2024 · IPsec is capable of supporting high availability environments on pfSense® software. Does anyone have any exerience with doing this? do you have to have a public IP for each node in the setup? Aug 24, 2025 · Once high availability (HA) is configured for your pfSense machines, you can check the pfSense configuration replication, as well as DHCP server failover. Aug 26, 2025 · The synchronization interface only requires one IP address per node. 100/24 internal network on that router. Nov 23, 2020 · ON PFSENSE WEB-UI On the Master, go to Firewall > Virtual IPs: Click in “ + Add “, Select the “ Type ” as “ CARP “, Select the “ Interface ” of the LAN, Define the Virtual IP address in “ Address (es) “, for example 10. And everything works 100% when the backup opnsense fw is under reboot. 168. This recipe is a supplement to High Availability Configuration Example. I've been googling for a few weeks and found nothing. It is particularly suited for web sites struggling under very high loads while needing persistence or Layer7 processing. Aug 21, 2025 · This recipe describes a typical pfSense® software high availability (HA) cluster configuration with two nodes (primary and secondary) containing three interfaces: WAN, LAN, and Sync. This […] Aug 29, 2025 · HAProxy is a free, very fast and reliable solution offering high availability, load balancing, and proxying for TCP, HTTP and HTTPS-based applications. Jul 19, 2023 · We are in the process of setting up pfSense in a high-availability environment using CARP. 87. Aug 21, 2025 · Segments containing database servers typically do not need to be publicly accessible, and hence would more commonly use private IP subnets, but the example illustrated here can be used regardless of the function of the two internal subnets. For HA server instances, configure clients to connect to the CARP VIP. Configure High Availability and CARP Virtual IP LAN on pfSense Aloui Hosni 1. The reporting and analytics capabilities of OPNsense offer valuable network traffic insights and visibility. Both requirements above can be Sep 7, 2022 · The term pfSense Shell is used in this tutorial, you can access the shell by ssh’ing into the instance and selecting 8 in the pfSense menu. This is covered in High Availability Configuration Example with Multi-WAN. Both of my Internet providers only offer dynamic IP addresses via DHCP, so I needed to be able to fail over without static IP addresses on any of the WAN interfaces. This is commonly a /30 subnet for the WAN, with a second subnet assigned for the internal interface. Then we can connect it to a switch (VLAN'd appropriately) and assign each of our OPNSense firewalls, including the virtual IP, an IP in the 172. Hence, on the frontend portal in pfSense-two, repeat steps 1–2 above to add the Azure IP, ignore local DNS servers and Jan 18, 2024 · In this tutorial, we will show you how to configure high availability on OPNsense firewall systems. Of course this scenario is a bit complex. May 8, 2023 · I would not bet on that, I have the same setup with Pfsense, my CARP-IP is 10. Sep 2, 2025 · Mismatched Versions Reset Lease Database Inconsistent Client Hostnames Troubleshooting High Availability DHCP Failover There are several potential scenarios that can cause problems with DHCP service for a high availability cluster. This document covers the settings on that page, but the general topics are covered in more detail throughout this chapter. the OVH Additional IP). The ugly solution is to enable your modem/router's NAT mode and let it handle the dynamic IP, and have it do 1:1 to a CARP VIP in a private IP "WAN" segment that uses a new private subnet you make up. Feb 11, 2024 · We have 5 statics IP addresses from the ISP. The need for the AWS High Availability package stems from the unique environment of a VPC. Dear Users! I have a problem understanding the HA usage of pfsense. Dec 13, 2022 · I have followed this guide and have a Starlink High-Performance Kit (Business) and the statistics page working on pfSense 22. May 29, 2020 · On the WAN side it could be to maintain one public IP, so the data center can route a second public subnet to one IP, also so traffic would continue to flow when failover happens (so the WAN IP doesn't change, from the perspective of external routers/server). How does one "connect" the PPPoE to the CARP IP address on the WAN interface? Or is this the wrong approach? Wrong config page? Dec 24, 2024 · I have two ISPs, one primary and the other secondary confirmed for high availability. I have setup CARP before on a WAN link with a big IP space, so allocating a distinct WAN IP per each device (as shown Sep 7, 2022 · The term pfSense Shell is used in this tutorial, you can access the shell by ssh’ing into the instance and selecting 8 in the pfSense menu. Oct 17, 2022 · In order to use FQDN domains (e. 100. I am wondering if the upstream switch between the cable modem and the pfsense boxes need to be managed or not, and also because there are only 3 used ports (cable modem and two pfsense I was looking into maybe setting up a high availability cluster using either two CheckPoint 600 boxes or two pfSense boxes, mainly for playing around with. I have a server with its public IP Addresses are provided by the first ISP, now i need the traffic to go through the secondary ISP through to the server when the first ISP is down. High Availability Sync but without seamless failover? I have a spare mini computer that I would like to use to do HA but since I have only one public IP address and realistically I don't need to implement seamless failover can I just activate the High Availability Sync option? Aug 7, 2018 · The document provides instructions for setting up a high availability (HA) cluster with two pfSense firewalls using CARP for IP redundancy, XMLRPC for configuration synchronization, and pfsync for state synchronization. It’s mostly static for the most part, I’ve not seen it change in the last year so I’m fine assuming it’s static. Utilizing this powerful feature of OPNsense creates a fully redundant firewall with automatic and seamless fail-over. You also need to own at least one public domain (say mydomain. One is for the WAN of the firewall, and one for the inside interface. I personally have the configurations duplicated between nodes and then I manually start/stop WG in case of a fail over. So either it's not possible, or it's soooo simple no one needs to talk about it. Optimizing web server performance and improving network security can be achieved by setting front-end and back-end arrangements, keeping an eye on server health, and permitting restricted external access. Nov 24, 2024 · And if I take one of the firewalls offline, the WAN CARP IP replies perfectly, just a single missed ping. Read through that recipe before proceeding. I'm trying to build a HA setup but based on a single ISP provided IP. The three interfaces are LAN, WAN, and Sync. 100/24 range and they sould all be happy. This document contains items to check as well as potentially problematic scenarios and workarounds. Go to System ‣ High Availability ‣ Settings and enable pfSync by selecting PFSYNC from the Synchronize all states via dropdown and enter the peer IP (10. This usually maps a public IP address on a WAN type interface to a private IP address on a LAN type interface. To synchronize the configuration settings from the master to the backup firewall, we setup the XMLRPC sync. This post is about pfSense High Availability This recipe describes a simple three interface HA configuration. Determine IP Address Assignments The This section covers the routing of public IP addresses where a public IP subnet is assigned to an internal interface on a single firewall deployment. Apr 15, 2024 · It suggests that one must select the CARP IP for WAN, which would supposedly appear in the Link interface (s) drop-down menu. 2 will likely bring in newcarp/carpdev so it can work with one IP, but I don't think that would still work with a dynamic IP. You can setup multiple nodes based on your requirements. It's free to sign up and bid on jobs. Sep 2, 2025 · State Synchronization Problems (pfsync) HA and Multi-WAN Troubleshooting Troubleshooting High Availability High availability configurations can be complex, and with numerous different ways to configure a failover cluster, it can be tricky to get things working properly. Feb 19, 2020 · If there is no high availability solution for a single WAN IP, then there is no need for me to setup high availability, and the best thing to do is to have second pfSense box available with imported settings from the main unit. If a firewall has five public IP addresses available as Virtual IP addresses, then it can forward TCP port 80 to five internal web servers. Ia percuma untuk mendaftar dan bida pada pekerjaan. However, I've issues accessing Azure VMs through a site-to-site IPSec on pfSense. Also, with the newer Edge service (business) they may have to disable it on their end. Both boxes connect to my local site with the same public IP and some packets of the connection to the remote devices go once through pf1, then through pf2, which often causes the connection to be dropped. It is not instant fail-over, it take around 15-30 pfSense 2. Two questions: Single public IP pfsense HA and Routing public via internal net? Hello r/pfsense! I've got a situation coming up that I need some help with and was hoping someone could lend their expertise in resolving two specific issues. Mar 16, 2024 · Is your feature request related to a problem? Please describe. When the primary goes down, the secondary ISP should take over or use both the primary and secondary link simultaneously like a load balancing method. Jan 22, 2024 · Around the same time, I started researching pfSense’s high availability features. We have two separate dedicated servers in the Hetzner Cloud, each with a public IPv4 address, and two separate private LAN networks for pfSync and "normal" LAN networking. The example configuration depicted in this section uses a /24 public IP subnet and splits it into two /25 subnets. Nov 20, 2023 · Check your public IP address has changed, make a note of it. Setup PFSense Wan with Static IP, Subnet, and gateway. What is HAProxy in pfSense? HAProxy is open-source software that provides high availability and load balancing for TCP/HTTP services. 2 was that FreeBSD allowed CARP VIPs outside the interface subnet, not that it wasn't still important to configure HA clusters correctly. Specific to networking, it allows a network engineer or operator to replace or repair a failed device or component without affecting services and end users. Oct 12, 2020 · I managed to setup a sort-of pfSense HA for my home without CARP and with a single dynamic IPv4 and IPv6 from Comcast. Since there is no high availability on your WAN side, you now have decided to add another ISP for redundancy. In the baove I refer to the specific pfense HA. It is technically possible to configure an interface with a CARP VIP as the only IP address in a given subnet, but it is not generally recommended. The primary IP address for an interface comes from the interface settings, while Virtual IP (VIP) addresses facilitate the use of additional IP addresses in conjunction with NAT or local services. So if you can take a scheduled outage to apply updates on the backup box: your OK. Aug 27, 2025 · For example, if a firewall has only one public IP address available, it can only forward TCP port 80 to one internal web server. I am looking to setup CARP following this guide across two pfSense firewalls. . And if something happen i will do the change over manually. Aug 21, 2025 · High availability (HA) can be deployed for firewall redundancy in a multi-WAN configuration. Mar 8, 2023 · Each VM would also get assigned a public IP address (i. Aug 25, 2022 · In this blog post we’re going to look at how you can host multiple websites on separate virtual machines that sit behind a pfSense firewall with HA Proxy installed. 85 (that is also my gateway I'm told), but the individual routers then have is . 230 and master IP is 10. This is in my house, and for learning so don't want to spend all sorts of money on more IPs - doubt it's even offered on residential plans. Creating a bridge and adding that to the pfSense VM will give me a Ensure network reliability with pfSense by configuring high availability to maintain uninterrupted service and minimize downtime. I have residential internet with 1 WAN IP. I have a Cisco SG200 managed switch that I will be using for the VLAN management of the interfaces. We have both configurations, WAN01 has a router behind, hence only one public IP is needed and WAN02 has only a switch but three public IPs. pfSense is one of the few open-source solutions offering high-availability techniques. Multiple systems knowing the same configurations can help prevent a single point of failure. If using Dynamic DNS, verify that the IP address has been updated and that the sites are reachable. Currently internal servers get public IP directly via switches and pfsense is only doing inspection and blocking in bridge mode. 2) in the field Synchronize Peer IP. Until now, I have used pfSense and redundant WAN on same unit. I mostly needed it because I mess around with my main server a bunch and my family was getting mad when I killed the internet. The entire process should only take a few minutes to setup. This setup provides redundancy and failover capabilities, ensuring that your network remains operational even if one firewall fails. Dec 16, 2023 · One of the common use cases for HAProxy on pfSense is to act as a reverse proxy for web servers on the LAN network. so I guess I'm stucked at this point and can only go one with on public CARP IP and two privates, one for each pfSense wan interfaces, Yes, you need three public IPv4 addresses for that. Browse the internet and run a speed test or two to confirm a usable connection. The CARP address can be used for services on or behind pfSense. Each node uses One IP address, plus a shared CARP VIP address for failover. This technique makes use of homogenous network setups across identical nodes wh pfsense HA / High Availability Setup and Testing Using CARP, XMLRPC & pfsync Lawrence Systems 376K subscribers Subscribe Cari pekerjaan yang berkaitan dengan Pfsense high availability one public ip atau upah di pasaran bebas terbesar di dunia dengan pekerjaan 22 m +. However, the CARP IP address doesn't appear on the list. 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. High Availability on pfSense software is achieved through a combination of features: CARP for IP address redundancy XMLRPC for configuration synchronization pfsync for state table Search for jobs related to Pfsense high availability one public ip or hire on the world's largest freelancing marketplace with 22m+ jobs. Oct 8, 2018 · Now I am thinking of going full blown pfsense setup. In Ubiquity EdgeRouter, we setup pseudo-ethernet and we can create a MAC address for each of the pethXX interfaces (equivalent to Virtual IP of the pfSense, I guess?) and set it to DHCP. The remaining IP addresses can be used with either NAT, bridging or a combination of the two. Jan 18, 2021 · CARP with DHCP on WANI guess the plan is to have stateful failover on DHCP WAN? Please update the thread if you find any good solutions as I would like to have the same. com📌 Firewall tutorials ️ pfSens Feb 21, 2020 · (Not VLAN, 2 different physical interfaces going to 2 different switches), and all FTP clients know this single public IP. Sep 13, 2025 · The Question How can we design the networking layer so that pfSense doesn’t become a bottleneck when supporting 1000+ concurrent RDP connections? We’ve explored the idea of SNAT-based routing — inbound traffic entering via pfSense, with outbound traffic going directly through the Proxmox node’s public IP. In your case, you would assign the public IP address as a VIP on the WAN interface. This section discusses common problems and solutions for the majority of cases. 60. dual wan. Nov 24, 2024 · So their "CARP-IP" is . IP Address Requirements A High Availability cluster using CARP needs three IP addresses in each subnet along with a separate unused subnet for the Sync interface. High Availability on pfSense software is achieved through a combination of features: CARP for IP address redundancy XMLRPC for configuration synchronization pfsync for state table Oct 12, 2022 · pfSense's GUI can be daunting to newer users. pfSense® software is one of very few open source solutions offering enterprise-class high availability capabilities with stateful failover, allowing the elimination of the firewall as a single point of failure. I’ve been unable to find a well written guide on it, but I Aug 25, 2025 · Single IP Subnet on WAN With a single public IP subnet on WAN, one of the public IP addresses will be on the upstream router, commonly belonging to the ISP, and another one of the IP addresses will be assigned as the WAN IP address on pfSense® software. One of their prerequisites is: A High Availability cluster needs three IP addresses in each subnet along with a separate unused subnet for the Sync interface. Chercher les emplois correspondant à Pfsense high availability one public ip ou embaucher sur le plus grand marché de freelance au monde avec plus de 23 millions d'emplois. In this post, we provide an overview of how to configure pfSense after a default installation, with screenshots. 31K subscribers Subscribe The AWS High Availability package builds upon the CARP Virtual IP Address (VIP) functionality in pfSense software to provide an analogous mechanism for High Availability (HA) in the AWS Virtual Private Cloud. Search for jobs related to Pfsense high availability one public ip or hire on the world's largest freelancing marketplace with 24m+ jobs. We're planning to add a second PFSense to gain full High Availability on our infrastructure. In this article, we will see how to configure two pfSense servers in cluster mode to ensure high availability service. This section details the VIP and NAT configuration needed for a dual WAN HA deployment. Feb 22, 2025 · While configuring High Availability (HA) between two pfSense firewalls (jpcfw1 and jpcfw2), we encountered a synchronization issue with the SERVER interface and VLAN. e. In this video I discuss the benefits of HA in your homelab, and show how to configure it including po Jan 20, 2023 · The only thing you need is under firewall: "Disable Firewall for True Static IP Subnet Only" And set security to Default low. 1 as suggested, my internet connection goes down after a reboot, and the gateway shows as Offline. Search for jobs related to Pfsense high availability one public ip or hire on the world's largest freelancing marketplace with 22m+ jobs. Jun 5, 2020 · CARP High Availability Objectives This guide mainly focuses on setting up 2 pfSense boxes where one is a master firewall while the other one is the slave firewall. IP Assignments At least two public IP subnets must be assigned by the ISP. From what I can find, it looks like the WAN interfaces need a minimal of 3x public IP's, 1 for each firewall and then 1 for the virtual address. Because this subnet is being routed to a CARP VIP, the routing will not be dependent upon a single node. 248 network minimum. (Another how, and is it possible) That that in theory would keep the primary up to date, assuming the script can interface with the pfSense side (and I'm not missing something). While Search for jobs related to Pfsense high availability one public ip or hire on the world's largest freelancing marketplace with 24m+ jobs. High Availability OPNsense utilizes the Common Address Redundancy Protocol or CARP for hardware failover. L'inscription et faire des offres sont gratuits. What will be limitations of HA setup with one instance having public WAN IP, one having CGNAT WAN IP and no WAN CARP IP ? High Availability in pfSense uses the Common Address Redundancy Protocol (CARP) to create a cluster of two or more firewalls. The options for these are available via the System → High Avail. In high availability environments, choose an appropriate CARP VIP address for the WAN where the IPsec tunnel will Jun 6, 2021 · If you don’t know how to start with the HAProxy feature in pfSense, don’t worry. Final Impressions Is a WAN failover setup strictly necessary? pfSense® software is one of very few open source solutions offering enterprise-class high availability capabilities with stateful failover, allowing the elimination of the firewall as a single point of failure. g. @minesh-patel said in PfSense in Azure: How do we perform a failover Dec 12, 2012 · I don't think it's possible – but is there a way to have high availability with just 1 WAN IP and gateway (/30 network)? I'd like to use CARP and the pfSense sync capabilities, but I don't have more than one WAN IP address to use. 18. That has worked great. Sep 27, 2022 · Not all changes made to pfSense-one are synchronised to pfSense-two. For WANs, this means that a /29 subnet or larger is required for an optimal configuration. Sep 19, 2022 · Configure Pfsense, the world’s leading open source all in one firewall, router, and VPN solution in a highly available setup on Oracle Cloud Infrastructure. Jan 18, 2021 · I'd like to use OPNsense High Availability so I can reboot my host easily. The only issue I see is that when I have set Reject leases from to 192. Jul 2, 2024 · I want to set up a High Availability (HA) pfSense Cluster in Hetzner Cloud. Do i need 2 public ip address to make it or not? In the video when the netgate engineer d Sep 20, 2023 · one virtual HA address for pfsense and one real IP for each pfsense = 3, plus the ISP gateway is a fourth … 4 IPs needs a /29 255. Any additional servers must use alternate ports such as 8080. Aug 26, 2025 · High Availability Synchronization settings for pfSense® software are located in the GUI at System > High Availability. Each domain needs a “A record” on the DNS pointing to your pfSense WAN IP. I had to open port 1985 or something like on WAN that so that their two routers can see both lines at all times. The only thing that changed in pfSense 2. Sep 12, 2023 · Greetings all, I've attually a PFSense configured with HAProxy (to do load balancing) and with some VIPs as IP alias: some on WAN interface, some on LAN interface (to manage load balancing through HAProxy). 1 and mask /24, Define the “ Virtual IP Password “, Leave the VHID as ‘ 1 ‘ for the first, but if you already have one virtual IP, choose another IPFire vs OPNsense: Which is better? We compared these products and more to help you find the perfect solution. I have a ceph cluster of 4 nodes (but there will be nodes added regularly), so I can give each node a public IP address on one of it's ethernet ports. As soon as I remove that IP address, then the gateway comes back up and the internet pfSense® software is one of very few open source solutions offering enterprise-class high availability capabilities with stateful failover, allowing the elimination of the firewall as a single point of failure. net) being forwarded to your web servers, you will need a static IP for your pfSense’s WAN interface. Sep 3, 2025 · OpenVPN and High Availability OpenVPN works well with high availability (HA) on pfSense® software. With FHRP, 2 routers will share a virtual IP so that if primary router goes down, the backup picks up the load routing will continue as normal. Two or more firewalls can be configured as a failover group. 05. I have a /27 configured on my firewall and I would like to use one of my unused IP's for this. Sep 20, 2021 · 4 this is my first time asking a question here, and I was wondering is it possible to have two different ISP public IPs connected to a single system for high availability? for example, if our ISP 1 became offline the 2nd ISP will be available, just like google and youtube have different Public addresses, I am just at a loss where to config this. Due to the shortage of IPV4 addresses and many ISP's Nov 22, 2023 · I would like to have pfsense terminate the ssl cert and then redirect traffic to the internal server. Search for jobs related to Pfsense high availability one public ip or hire on the world's largest freelancing marketplace with 23m+ jobs. Mar 23, 2024 · In conclusion, effective load balancing and high availability for TCP/HTTP services are made possible by setting HAProxy on pfSense. 86 and . Yes, if you only have one public IP the backup box cannot access the internet directly to check for or apply updates. Nov 9, 2023 · At home I have only one public IP that is obtained via DHCP. To provide an HA OpenVPN solution, configure the OpenVPN server or client to use a CARP VIP as its Interface. com and mydomain. This blog will look at how you can use pfSense HAProxy for the webserver load balancing. com) through a registrar, such as Namecheap or GoDaddy. Let us and our comparison database help you with your research. pfSense provides synchronization methods for sharing firewall state information and for sharing some pfSense configuration settings with one or more pfSense systems. we need one carp address for each public ip ? Maybe you've read that in a very old tutorial. Is that elegantly possible with just n=1 IP address per WAN link (out of which one is bound to a MAC address, which I can choose (once))? Thanks! Search for jobs related to Pfsense high availability one public ip or hire on the world's largest freelancing marketplace with 23m+ jobs. 🔸 pfSense - How to Configure High Availability and CARP Virtual IP LAN with 2 Firewall pfSense👉 Read more https://totatca. Aug 24, 2025 · When you configure high availability (HA) on pfSense, the DHCP leases are synchronized between the 2 pfSense machines. High availability and stability are key attributes of OPNsense, with consistent performance over several months. Currently I just keep my WAN interfaces without CARP so when a failover occurs it drops all external sessions but at least I still have Internet access. Upgrading from one version to another generally follows the this procedure, exceptions are noted later in the page: Review release notes, blog, and upgrade guide. If one interface fails on the primary or the primary goes offline entirely, the secondary becomes active. Is it possible to make High Availability setup using 2 OPNSense hardware on a single WAN IP ? I have /29 from my ISP, but this seems to not help. However, the ISP is assigning each static IP address bases on a MAC address and the type would be DHCP. Many, many reasons for having a routable IP address for each node plus the CARP VIP. Aug 27, 2025 · Example IP Address Range 1:1 Configuration 1:1 NAT on the WAN IP, aka “DMZ” on Consumer Gateways 1:1 NAT 1:1 NAT (pronounced “one-to-one NAT”) maps one external IP address to one internal IP address. If we let a router assume control of the WAN interface and its single IP, we could then setup the 172. All other public IPs you I have two pfSense VMs running in HA/CARP mode with one public IP provided by the ISP You need to trunk the WAN, LAN and CARP networks between the two ESXi servers. Pfsense may be a little different, but there is something called First Hop Redundancy Protocol. mydomain. CARP VIP as IPsec Endpoint CARP type virtual IP addresses are available in the Interface drop-down menu on IPsec phase 1 configuration entries. You may effortlessly configure the High Availability (HA), CARP, and pfSync features on your OPNsense nodes and establish a redundant OPNsense firewall cluster by following the next main steps: Configure Interfaces Configure Firewall Rules Add Firewall Rules on Master Node Add Firewall Rules on Jul 18, 2022 · What is High Availability? High Availability (HA) is an important concept in Systems Engineering that eliminates single points of failure, ensuring continuous operation despite many hardware or software failures. Is it … The second public IP address subnet must be routed to one of the CARP VIPs by the ISP, data center, or upstream router. Oct 1, 2014 · I'm trying to figure out how I could install a pfSense VM and make it HA. For some reason, both the primary and secondary node are MASTER at the same time for a single VLAN. Wireguard won’t support HA as it doesn’t bind to IPs. Call pfSense to update the "static ip" of the virtual carp interface to the one provided by the DHCP, also update the gateway and bitmask if required. Oct 21, 2020 · @kiokoman said in pfSense High Availability exapand existing firewall with multi wan and multi ip: what i don't understand is. Jun 27, 2011 · We are currently searching for a high-availability solution, one question I need answered before starting to test pfSense: Today, we use 4 public IPs, all on different subnets, for 4 different domains. The boxes are multi-homed (2 ISPs) with the other ISP as the default gateway. Currently, if a user wants to setup a passive/active router setup (high availability) on the WAN interface, they will need 3 static IP addresses on the WAN side so they can setup CARP. This example will use a /30 on WAN as shown in Table WAN IP Block and a /29 public subnet on an internal OPT interface as shown in Table Inside IP Block. Part 3 of the OpnSense series covers high availability. 0. gateway / modem will pass it through to PFSense. So if you can take a scheduled outage to apply updates on the backup box: Jul 30, 2024 · Upgrading High Availability Clusters This document provides guidance on upgrading redundant firewalls in a high availability configuration across major versions of pfSense® software. Jun 19, 2021 · You have been running pfSense on your network. Jun 27, 2023 · And similar to PFSense the LAN uses virtual IP for the primary gateway. 231. generic high availability techniques are availble to you. What I want is to move all my public IPs on pfsense and use 1:1 NATTING. Jan 2, 2025 · [pfSense] Configuring High Availability Yes, if you only have one public IP the backup box cannot access the internet directly to check for or apply updates. Mar 1, 2023 · The pfSense® software is one of the very few open source solutions that offers enterprise-class high availability with stateful failover, enabling the firewall to be eliminated as a single point of failure. For WANs, this means that each WAN requires a /29 size subnet or larger for an optimal configuration. High Availability on pfSense software is achieved through a combination of features: CARP for IP address redundancy XMLRPC for configuration synchronization pfsync for state table Aug 3, 2016 · H ow do I setup a multi-WAN load balancing and failover on pfSense router with two ADSL or cable or leased-line or FTTH (Fiber to the home) connections? In this tutorial you will learn how to configure pfSense to load balance and fail over traffic from a LAN to multiple Internet connections (WANs) i. Task 1: Install two pfSense Virtual Appliances on Oracle Cloud In this tutorial, we will use two pfSense virtual appliances for High Availability. Virtual IPs When using additional addresses for features like NAT or binding services to different interfaces, you can add extra addresses to already defined interfaces using Virtual IPs. This allows external clients to access the web servers using a single public IP address and domain name, while also providing SSL termination, caching, and security features. Tody both master and slave should have a public IP and a third IP is needed as CARP. High Availability (HA) in PFSense is generally having a redundant firewall set up as the backup whenever the current firewall (Master) is experiencing downtime via failover Mar 22, 2023 · High-Availability is the capability of PFSense to have lower downtime when the main PFSense fails. Aug 25, 2025 · Single IP Subnet on WAN With a single public IP subnet on WAN, one of the public IP addresses will be on the upstream router, commonly belonging to the ISP, and another one of the IP addresses will be assigned as the WAN IP address on pfSense® software. 255. Sync page. WAN ISP 2 with only 1 IP will exclude use of HA. OPNsense is recognized for its robustness as a reliable open-source firewall with frequent updates. At the same time I do want to deploy HA setup as well by adding another pfsense box. This is functionally equivalent to a two interface LAN and WAN deployment, with the Sync interface being used to synchronize configuration and firewall states between the primary and secondary firewalls. Mar 20, 2023 · Using several public IP addresses on the firewall, one per client through Outbound or 1:1 NAT, or multiple public IP addresses on the external PPTP server is the only feasible workaround. With configuration synchronization in place, the CARP Virtual IP addresses need only be added to the primary node and they will automatically copy to the secondary node. High Availability This document covers configuration of a High Availability cluster in pfSense ® Plus software using the following features: CARP for IP address redundancy XMLRPC for configuration synchronization pfsync for state table synchronization Kea for DHCP failover With this configuration, two devices act as an “active/passive” cluster with the primary device working as the active Aug 24, 2025 · To ensure high availability (HA) of pfSense, it's possible to synchronize the configuration of 2 pfSense machines using pfSync while ensuring that only one pfSense instance will be used (thanks to CARP IPs). What are your recommendations ? Is there anything else i I’m tryin to setup PfSense High Availability on two of my boxes. Mar 30, 2016 · Here is the diagram they provide: I have a question about the WAN part. Apr 3, 2024 · On This Page IP Assignments Interface Configuration Configure WAN Configure OPT1 NAT Configuration Firewall Rule Configuration Routing Public IP Addresses This section covers the routing of public IP addresses where a public IP subnet is assigned to an internal interface on a single firewall deployment. Aug 27, 2025 · CARP is multi-WAN capable so long as all WAN interfaces use static IP addresses and there are at least three public IP addresses available per WAN. zsafl ztof edskui afwhz ploxcl ufi jyewfx eessa eoq ezs