# F5 DoS for NGINX 4.3




Here you can find the release information for F5 DoS for NGINX v4.3. F5 DoS for NGINX provides behavioral protection against Denial of Service (DoS) for your web applications.

## Release 4.3

December 19, 2023

In this release, F5 DoS for NGINX supports NGINX Plus R31.

### New Features

- Support for Nginx Plus R31
- [Support for Alpine 3.17](learn-about-deployment.md#alpine-315x--317x-installation)

### Supported Packages

#### App Protect DoS

##### Alpine 3.17

- app-protect-dos-31.4.3.1-r1.apk

##### CentOS 7.4+ / RHEL 7.4+ / UBI7

- app-protect-dos-31.4.3.1-1.el7.ngx.x86_64.rpm

##### RHEL 8 and Rocky Linux 8

- app-protect-dos-31.4.3.1-1.el8.ngx.x86_64.rpm

##### Debian 11

- app-protect-dos_31.4.3.1-1~bullseye_amd64.deb

##### Ubuntu 20.04

- app-protect-dos_31.4.3.1-1~focal_amd64.deb

##### Ubuntu 22.04

- app-protect-dos_31.4.3.1-1~jammy_amd64.deb

#### NGINX Plus

- NGINX Plus R31

### Important Note

- Starting with this release, Alpine 3.15 support has been deprecated.