OPNsense

Selecting Partition SchemeReview Partition Setup. After reviewing the disk partitioning setup, select Finish.Figure 9. Review Partition SetupConfirm Partitioning. To confirm the disk partitioning, select Commit. Beware that this will permanently remove all files on the disk.Figure 10. Confirm PartitioningInitializing the disk. The initialization of the target disk will start.Figure 11. Initializing the disk.File Installation. OPNsense files installation will start.Figure 12. File InstallationVerification of the installation. OPNsense installer verifies the installation.Figure 13. Verification of the installationPreparing the target. OPNsense installer prepares the target system.Figure 14. Preparing the targetChanging root password. Default OPNsense root password is opnsense. It is recommended that you change it with a strong one.Figure 15. Changing root passwordFigure 16. Setting root passwordFinal Configuration. To apply the configuration and exit installer, select Exit and then OK.Figure 17. Final ConfigurationReboot. Installation of OPNsense from USB flash drive is finished successfully. The firewall needs to reboot. You should proceed to the initial configuration of your OPNsense firewall.Figure 18. RebootnoteYou may learn how to install OPNsense on Proxmox Virtual Environment by reading the OPNsense Installation Tutorial written by Sunny Valley Networks. Since OPNsense installation on different platforms has almost the same procedures, this article may be helpful for USB installation also.Step 5: Completing OPNSense Initial Configuration​After installing the OPNsense the following initial configuration steps should be completed.Network device assignmentsIP address settingsUpdating OPNsense FirewallAccessing the OPNsense GUIInitial configuration of OPNsense FirewallYou may find more information about the initial configuration steps on OPNsense Installation Tutorial written by Zenarmor.Which one is Better for OPNsense? UFS

How to Install OPNsense from USB?OPNsense is an open-source firewall distribution based on FreeBSD. There are also DHCP servers, DNS servers, VPNs, and other services available in addition to the firewall. OPNsense has a number of advantages over competitors, including forward caching proxy, traffic shaping, intrusion detection, and a simple OpenVPN client setup. The Zenarmor plugin, in particular, which provides application control and web filtering features, is extremely useful for administrators in protecting their networks from cyberattacks. OPNsense's dependable update mechanism allows it to deliver critical security updates on time.For more information about the OPNsense features, please refer to the Best Open Source Firewalls article written by Zenarmor.Best PracticeZenarmor NGFW Plug-in for OPNsense is one of the most popular OPNsense plug-ins and allows you to easily upgrade your firewall to a Next Generation Firewall in seconds. NG Firewalls empower you to combat modern-day cyber attacks that are becoming more sophisticated every day.Some of the capabilities are layer-7 application/user aware blocking, granular filtering policies, commercial-grade web filtering utilizing cloud-delivered AI-based Threat Intelligence, parental controls, and the industry's best network analytics and reporting.Zenarmor Free Edition is available at no cost for all OPNsense users.In this OPNsense installation guide, we will cover how to install OPNsense from a USB stick by describing the following topics.What are the System Requirements for OPNSense Setup?Where to Download OPNSense?How to Install OPNSense Files?Step 1: Selecting HardwareStep 2: Downloading OPNSense ISOStep 3: Writing OPNsense Image to Installation MediaStep 4: Installing OPNSense from USB to Target DeviceStep 5: Completing

Your target platform has a serial interface, download the serial image. If not, you should select vga for the image type. You may choose any mirror for your liking.How to Install OPNSense Files?​You may easily install the OPNsense firewall by following the 5 steps given below.Step 1: Selecting Hardware​While the majority of features have no effect on hardware dimensioning, a few do. The candidates are as follows:Squid: A caching web proxy that is used for web-content control, and so on. These packages are heavily reliant on CPU load and disk-cache writes.Captive Portal: Settings with hundreds of concurrently served captive portal users will necessitate high CPU powerState transition tables: Each state table entry requires approximately 1 kB (kilobytes) of RAM. A typical state table with 1000 entries will take up about 10 MB (megabytes) of RAM. OPNsense usage settings with hundreds of thousands of connections will necessitate additional memory.You should select the hardware according to the system requirements given above.Step 2: Downloading OPNsense ISO​You may download the OPNsense installation file from the official OPNsense download page. You may select system architecture according to your system's CPU architecture, and also specify image type and mirror location as well. OPNsense ISO Download steps are given below.Select vga image type for USB installationSelect the fastest mirror for your locationClick Download button.Figure 1. Downloading OPNsense vga ISO fileStep 3: Writing OPNsense Image to Installation Media​After downloading the OPNsense image, you may easily create bootable USB for OPNsense installation. First, you need to unpack OPNsense ISO

Filw by running the following command:bunzip2 OPNsense-21.7.1-OpenSSL-vga-amd64.img.bz2Then, you may write the image to a USB flash drive (>= 1GB), either with dd under FreeBSD or under Windows with physdiskwrite (or Rufus).Writing an OPNsense image to a USB is explained in detail below for various platforms.1. FreeBSD​To write the OPNsense image to a USB drive on FreeBSD system, run the following command.dd if=OPNsense-##.#.##-[Type]-[Architecture].[img|iso] of=/dev/daX bs=16knoteWhere X = the device number of your USB flash drive (check dmesg)For example,dd if=OPNsense-21.7.1-OpenSSL-vga-amd64.img of=/dev/da1 bs=16k2. Linux​To write the OPNsense image to a USB drive on a Linux system, run the following command.dd if=OPNsense-##.#.##-[Type]-[Architecture].[img|iso] of=/dev/sdX bs=16knoteWhere X = the IDE device name of your USB flash drive (check with hdparm -i /dev/sdX) (ignore the warning about trailing garbage, it's because of the digital signature)For example,dd if=OPNsense-21.7.1-OpenSSL-vga-amd64.img of=/dev/da1 bs=16k3. OpenBSD​To write the OPNsense image to a USB drive on an OpenBSD system, run the following command.dd if=OPNsense-##.#.##-[Type]-[Architecture].[img|iso] of=/dev/rsd6c bs=16knoteThe device must be the ENTIRE device (in Windows/DOS language: the 'C' partition), and a raw I/O device (the 'r' in front of the device "sd6"), not a block mode device.For example,dd if=OPNsense-21.7.1-OpenSSL-vga-amd64.img of=/dev/rsd6c bs=16k4. Mac OS X​To write the OPNsense image to a USB drive on a Mac OS X system, run the following command.sudo dd if=OPNsense-##.#.##-[Type]-[Architecture].[img|iso] of=/dev/rdiskX bs=64knoteWhere r = raw device, and where X = the disk device number of your CF card (check Disk Utility) (ignore the warning about trailing garbage, it's because of the digital signature)For example,sudo dd if=OPNsense-21.7.1-OpenSSL-vga-amd64.img of=/dev/rdiskX bs=64k5. Windows​To write the