# F5 DoS for NGINX 4.10

Type of document: Reference
Product: F5 DOS for NGINX
> Release notes for F5 DoS for NGINX 4.10, including support for NGINX Plus R37.1.

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F5 DoS for NGINX provides behavioral protection against Denial of Service (DoS) attacks for your web applications.

## Release 4.10

August 26, 2026

### New features

- NGINX Plus R37.1 support

### Supported packages

| Distribution name          | Package file                                          |
|----------------------------|-------------------------------------------------------|
| Alpine 3.21                | _app-protect-dos-37+4.10.0-r1.apk_                    |
| Alpine 3.22                | _app-protect-dos-37+4.10.0-r1.apk_                    |
| Amazon Linux 2023          | _app-protect-dos-37+4.10.0-1.amzn2023.ngx.x86_64.rpm_ |
| RHEL 8 and Rocky Linux 8   | _app-protect-dos-37+4.10.0-1.el8.ngx.x86_64.rpm_      |
| RHEL 9 and Rocky Linux 9   | _app-protect-dos-37+4.10.0-1.el9.ngx.x86_64.rpm_      |
| RHEL 10 and Rocky Linux 10 | _app-protect-dos-37+4.10.0-1.el10.ngx.x86_64.rpm_     |
| Debian 11                  | _app-protect-dos_37+4.10.0-1\~bullseye_amd64.deb_     |
| Debian 12                  | _app-protect-dos_37+4.10.0-1\~bookworm_amd64.deb_     |
| Debian 13                  | _app-protect-dos_37+4.10.0-1\~trixie_amd64.deb_       |
| Ubuntu 22.04               | _app-protect-dos_37+4.10.0-1\~jammy_amd64.deb_        |
| Ubuntu 24.04               | _app-protect-dos_37+4.10.0-1\~noble_amd64.deb_        |
| NGINX Plus                 | _NGINX Plus R37.1_                                    |

### Important notes

- F5 DoS for NGINX 4.10 requires NGINX Plus **R37.1**, whereas 4.9 requires **R37.0**. Each `nginx-plus-module-appprotectdos` package depends on a virtual package named `nginx-plus-r<release>` that only its own NGINX Plus release provides, so F5 DoS for NGINX and NGINX Plus must be upgraded together.
- On Debian and Ubuntu, `apt` considers only the newest `nginx-plus` available and will not select an older one on its own. When installing a specific F5 DoS for NGINX version, pin `nginx-plus` as well, or the install fails with `Unable to correct problems, you have held broken packages`. See the [F5 DoS for NGINX Deployment Guide](/nap-dos/deployment-guide/learn-about-deployment.md) for the exact commands.
- If you use the L4 accelerated mitigation feature, pin `app-protect-dos-ebpf-manager` to the same version as `app-protect-dos`. Left unpinned, it installs the most recent version, which may not match the rest of your installation.