# Install duo_unix Two-factor authentication for SSH. Version 2.2.3 via Homebrew; verified from local package data. ## Install ```sh sudo av install brew:duo_unix ``` Additional install commands: ### macOS - Homebrew (100%): ```sh brew install duo_unix ``` Evidence: local Homebrew formula metadata ### Linux - apk (92%): ```sh sudo apk add duo_unix ``` Evidence: Alpine Linux edge package indexes: duo_unix from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz - Debian apt (92%): ```sh sudo apt install libduo-dev ``` Evidence: Debian stable package indexes: libduo-dev from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz - dnf (92%): ```sh sudo dnf install duo_unix ``` Evidence: Fedora Rawhide package metadata: duo_unix from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/13ee7b80cb813542594d4235c4a0b8695435d5ecf23dd3580bc7515ae1b6180d-primary.xml.zst - Nix (92%): ```sh nix profile install nixpkgs#duo-unix ``` Evidence: nixpkgs package indexes: pkgs/by-name/du/duo-unix/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 ## Package Facts - **Package key:** brew:duo_unix - **Package manager:** Homebrew - **Package manager URL:** - **Version:** 2.2.3 - **Source summary:** Two-factor authentication for SSH - **Homepage:** - **Repository:** - **Upstream docs:** - **License:** GPL-2.0-or-later - **Source archive:** - **Generated:** 2026-06-10T07:18:26+00:00 ## Executables - duo_unix_support.sh (cli) - login_duo (cli) - duo_unix_support.sh (alias) - login_duo (alias) ## Dependencies - openssl@3 ## Build Dependencies - autoconf - automake - libtool ## Install Behavior - Post-install hook: not defined - Bottle: available on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux ## Freshness - Page generated: 2026-06-10 - Package-manager version: 2.2.3 - Local data status: ok - Upstream repository: https://github.com/duosecurity/duo_unix - Upstream latest detected: duo_unix-2.2.3 (current) - info: No package-manager update timestamp was available. ## セキュリティノート broad file, network, media, or database tool signal. - **Geiger risk:** blue / medium - broad file, network, media, or database tool signal ## Source Database Details - **Source Database:** Homebrew formula API - **Tap:** homebrew/core - **Full Name:** duo_unix - **Version Scheme:** 0 - **Revision:** 0 - **Bottle Stable Root URL:** - **Deprecated:** no - **Disabled:** no - **Keg Only:** no - **URL Keys:** stable ## Other Package-Manager Records - Debian apt - libduo-dev - 1.11.3-1.2+b1: normalized package name match | Debian stable package indexes: libduo-dev from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | Duo Security development libraries and header files | https://github.com/duosecurity/duo_unix - Debian apt - libduo3t64 - 1.11.3-1.2+b1: normalized package name match | Debian stable package indexes: libduo3t64 from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | Duo Security library | https://github.com/duosecurity/duo_unix - Debian apt - libpam-duo - 1.11.3-1.2+b1: normalized package name match | Debian stable package indexes: libpam-duo from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | PAM module for Duo Security two-factor authentication | https://github.com/duosecurity/duo_unix - Debian apt - login-duo - 1.11.3-1.2+b1: normalized package name match | Debian stable package indexes: login-duo from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | login wrapper for Duo Security two-factor authentication | https://github.com/duosecurity/duo_unix - Nix - duo-unix: normalized package name match | nixpkgs package indexes: pkgs/by-name/du/duo-unix/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 - Ubuntu apt - libduo-dev - 1.11.3-1.1build2: normalized package name match | Ubuntu 24.04 LTS package indexes: libduo-dev from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | Duo Security development libraries and header files | https://github.com/duosecurity/duo_unix - Ubuntu apt - libduo3t64 - 1.11.3-1.1build2: normalized package name match | Ubuntu 24.04 LTS package indexes: libduo3t64 from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | Duo Security library | https://github.com/duosecurity/duo_unix - Ubuntu apt - libpam-duo - 1.11.3-1.1build2: normalized package name match | Ubuntu 24.04 LTS package indexes: libpam-duo from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | PAM module for Duo Security two-factor authentication | https://github.com/duosecurity/duo_unix - Ubuntu apt - login-duo - 1.11.3-1.1build2: normalized package name match | Ubuntu 24.04 LTS package indexes: login-duo from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | login wrapper for Duo Security two-factor authentication | https://github.com/duosecurity/duo_unix - apk - duo_unix - 1.12.1-r2: normalized package name match | Alpine Linux edge package indexes: duo_unix from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | Duo two-factor authentication for Unix systems with Pluggable Authentication Modules (PAM) | https://duo.com/docs/duounix - apk - duo_unix-dev - 1.12.1-r2: normalized package name match | Alpine Linux edge package indexes: duo_unix-dev from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | Duo two-factor authentication for Unix systems with Pluggable Authentication Modules (PAM) (development files) | https://duo.com/docs/duounix - apk - duo_unix-doc - 1.12.1-r2: normalized package name match | Alpine Linux edge package indexes: duo_unix-doc from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | Duo two-factor authentication for Unix systems with Pluggable Authentication Modules (PAM) (documentation) | https://duo.com/docs/duounix - dnf - duo_unix - 2.2.3-1.fc44: normalized package name match | Fedora Rawhide package metadata: duo_unix from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/13ee7b80cb813542594d4235c4a0b8695435d5ecf23dd3580bc7515ae1b6180d-primary.xml.zst | Duo two-factor authentication for UNIX systems | https://duo.com/ - dnf - duo_unix-devel - 2.2.3-1.fc44: normalized package name match | Fedora Rawhide package metadata: duo_unix-devel from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/13ee7b80cb813542594d4235c4a0b8695435d5ecf23dd3580bc7515ae1b6180d-primary.xml.zst | Development files and documentation for duo_unix | https://duo.com/ - dnf - duo_unix-doc - 2.2.3-1.fc44: normalized package name match | Fedora Rawhide package metadata: duo_unix-doc from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/13ee7b80cb813542594d4235c4a0b8695435d5ecf23dd3580bc7515ae1b6180d-primary.xml.zst | Documentation and license files for duo_unix | https://duo.com/ - dnf - duo_unix-selinux - 2.2.3-1.fc44: normalized package name match | Fedora Rawhide package metadata: duo_unix-selinux from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/13ee7b80cb813542594d4235c4a0b8695435d5ecf23dd3580bc7515ae1b6180d-primary.xml.zst | SELinux rules for duo_unix | https://duo.com/ ## Related Links - [Secret-risk packages](https://www.automicvault.com/ja/pkg/secret-risk-packages/) - Has protected-tool coverage, approval-gate, or non-low Geiger security signals. - [Terminal utility packages](https://www.automicvault.com/ja/pkg/terminal-utilities/) - Matched terminal and command-line workflow metadata. - [Networking and protocol packages](https://www.automicvault.com/ja/pkg/networking-protocol-tools/) - Matched network, protocol, or remote-service metadata. - [Security and crypto packages](https://www.automicvault.com/ja/pkg/security-crypto-tools/) - Matched security, identity, cryptography, password, signing, or certificate metadata. - [openssl@3](https://www.automicvault.com/ja/pkg/brew/openssl-3/) - Runtime dependency declared by Homebrew. - [libtool](https://www.automicvault.com/ja/pkg/brew/libtool/) - Build dependency declared by Homebrew. - [autoconf](https://www.automicvault.com/ja/pkg/brew/autoconf/) - Build dependency declared by Homebrew. - [automake](https://www.automicvault.com/ja/pkg/brew/automake/) - Build dependency declared by Homebrew. - [google-authenticator-libpam](https://www.automicvault.com/ja/pkg/brew/google-authenticator-libpam/) - Shares av.db curated category or tags: authentication, cli, pam, security, two-factor-authentication. - [linux-pam](https://www.automicvault.com/ja/pkg/brew/linux-pam/) - Shares av.db curated category or tags: authentication, cli, pam, security. - [oath-toolkit](https://www.automicvault.com/ja/pkg/brew/oath-toolkit/) - Shares av.db curated category or tags: authentication, cli, pam, security. - [krb5](https://www.automicvault.com/ja/pkg/brew/krb5/) - Shares av.db curated category or tags: authentication, cli, security. - [pinentry](https://www.automicvault.com/ja/pkg/brew/pinentry/) - Shares av.db curated category or tags: authentication, cli, security. - [cyrus-sasl](https://www.automicvault.com/ja/pkg/brew/cyrus-sasl/) - Shares av.db curated category or tags: authentication, cli, security. - [ssh-copy-id](https://www.automicvault.com/ja/pkg/brew/ssh-copy-id/) - Shares av.db curated category or tags: authentication, cli, security, ssh. - [stoken](https://www.automicvault.com/ja/pkg/brew/stoken/) - Shares av.db curated category or tags: authentication, cli, security. - [monkeysphere](https://www.automicvault.com/ja/pkg/brew/monkeysphere/) - Security-sensitive metadata or terminology overlaps. Shared terms: authentication, cli, openssl, openssl-3, security. - [pam-u2f](https://www.automicvault.com/ja/pkg/brew/pam-u2f/) - Security-sensitive metadata or terminology overlaps. Shared terms: authentication, cli, openssl, openssl-3, pam. ## Sources - Nucleus package database - Geiger risk classifier - package-page enrichment - package version freshness - av.db category and tag curation - package relationship graph - external package-manager database matches - cross-ecosystem install command graph