Dear friends and followers,

For more than 3 years now, OPNsense is driving innovation through modularising and hardening the code base, quick and reliable firmware upgrades, multi-language support, fast adoption of upstream software updates as well as clear and stable 2-Clause BSD licensing.

We are happy to announce the immediate availability of the renewed OPNsense 18.1 images based on version 18.1.6. Apart from the numerous improvements since the initial release, the images contain three relevant fixes:

  • Fix Unbound DNS parameter underflow on systems with higher number of CPUs
  • Disable RRD health reporting by default on Nano images to reduce write cycles
  • Disable TRIM by default on Nano images to prevent corruptions of the file system

The full list of changes of the OPNsense 18.1 series can be reviewed using their original announcements:

We would also like to use this opportunity to remind everyone that OPNsense is and always will be free software. All of its source code and associated build tools can be found here:

https://github.com/opnsense

Download links, an installation guide[1] and the checksums for the images can be found below as well.

All images are provided with SHA-256 signatures, which can be verified against the distributed public key:

# openssl base64 -d -in image.bz2.sig -out /tmp/image.sig
# openssl dgst -sha256 -verify rsa.pub -signature /tmp/image.sig image.bz2

The public key for the 18.1 series is:

—–BEGIN PUBLIC KEY—–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—–END PUBLIC KEY—–

Stay safe,
Your OPNsense team


[1] https://docs.opnsense.org/manual/install.html

SHA256 (OPNsense-18.1.6-OpenSSL-dvd-amd64.iso.bz2) = ee296edf026abd23b01d04c2aee7b9a0578ad4b3aa039e50eb40f720f13eac58
SHA256 (OPNsense-18.1.6-OpenSSL-nano-amd64.img.bz2) = 204e87a93b5bd0f7742e90bef8ae20bfd7c362a73ee29054a96356e9649572b3
SHA256 (OPNsense-18.1.6-OpenSSL-serial-amd64.img.bz2) = 063dc97b4177a932ba0bb243bec54b6b568ed84e515445b3eae7ba54f087478f
SHA256 (OPNsense-18.1.6-OpenSSL-vga-amd64.img.bz2) = 9be03dccce94705c35c476ea7ca0e2f42c70049ecc5c681a6dfe92b7f21d7c34

SHA256 (OPNsense-18.1.6-OpenSSL-dvd-i386.iso.bz2) = 06883a48295529bb7fae9fff4a77bbb95df9fcb08554f4c73aa3e0b894a4158b
SHA256 (OPNsense-18.1.6-OpenSSL-nano-i386.img.bz2) = ea87270fb5c83943c7cccae12ae9579f4f3a82489a901881cd4a786b7e09009d
SHA256 (OPNsense-18.1.6-OpenSSL-serial-i386.img.bz2) = 3ccbdf4fd31913afc93b0b51b4784df01d22ec03156659efe78d36ab2dcf222f
SHA256 (OPNsense-18.1.6-OpenSSL-vga-i386.img.bz2) = 252b16aae7592faf3d5912b5394124e494db7797ebeec7d6b7fae9a52ad28cd4