brew install google-authenticator-libpam

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brew install google-authenticator-libpam
Running `brew update --auto-update`...
==> Auto-updated Homebrew!
Updated 1 tap (homebrew/cask).

You have 1 outdated formula installed.
You can upgrade it with brew upgrade
or list it with brew outdated.

==> Downloading https://ghcr.io/v2/homebrew/core/qrencode/manifests/4.1.1
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==> Downloading https://ghcr.io/v2/homebrew/core/qrencode/blobs/sha256:6fa3a670e9708cf84470f82fd966e5610d0ad9d8c96c1f5987645b4db3fa65cb
==> Downloading from https://pkg-containers.githubusercontent.com/ghcr1/blobs/sha256:6fa3a670e9708cf84470f82fd966e5610d0ad9d8c96c1f59876
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==> Downloading https://ghcr.io/v2/homebrew/core/google-authenticator-libpam/manifests/1.09
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==> Downloading https://ghcr.io/v2/homebrew/core/google-authenticator-libpam/blobs/sha256:ceb57c28fa8ac36471c762ab3d2dd67c5026a0568100e8
==> Downloading from https://pkg-containers.githubusercontent.com/ghcr1/blobs/sha256:ceb57c28fa8ac36471c762ab3d2dd67c5026a0568100e82b756
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==> Installing dependencies for google-authenticator-libpam: qrencode
==> Installing google-authenticator-libpam dependency: qrencode
==> Pouring qrencode--4.1.1.arm64_monterey.bottle.tar.gz
🍺  /Users/YOUR_USER/brew/Cellar/qrencode/4.1.1: 13 files, 308.9KB
==> Installing google-authenticator-libpam
==> Pouring google-authenticator-libpam--1.09.arm64_monterey.bottle.tar.gz
==> Caveats
Add 2-factor authentication for ssh:
  echo "auth required /Users/YOUR_USER/brew/opt/google-authenticator-libpam/lib/security/pam_google_authenticator.so" \
  | sudo tee -a /etc/pam.d/sshd 

Add 2-factor authentication for ssh allowing users to log in without OTP:
  echo "auth required /Users/YOUR_USER/brew/opt/google-authenticator-libpam/lib/security/pam_google_authenticator.so" \
  "nullok" | sudo tee -a /etc/pam.d/sshd

(Or just manually edit /etc/pam.d/sshd)
==> Summary
🍺  /Users/YOUR_USER/brew/Cellar/google-authenticator-libpam/1.09: 11 files, 192.7KB
==> Running `brew cleanup google-authenticator-libpam`...
Disable this behaviour by setting HOMEBREW_NO_INSTALL_CLEANUP.
Hide these hints with HOMEBREW_NO_ENV_HINTS (see `man brew`).
==> Caveats
==> google-authenticator-libpam
Add 2-factor authentication for ssh:
  echo "auth required /Users/YOUR_USER/brew/opt/google-authenticator-libpam/lib/security/pam_google_authenticator.so" \
  | sudo tee -a /etc/pam.d/sshd

Add 2-factor authentication for ssh allowing users to log in without OTP:
  echo "auth required /Users/YOUR_USER/brew/opt/google-authenticator-libpam/lib/security/pam_google_authenticator.so" \
  "nullok" | sudo tee -a /etc/pam.d/sshd

(Or just manually edit /etc/pam.d/sshd)


See also[edit]

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