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-rw-r--r--makefu/1systems/gum.nix3
-rw-r--r--makefu/2configs/sshd-totp.nix18
2 files changed, 21 insertions, 0 deletions
diff --git a/makefu/1systems/gum.nix b/makefu/1systems/gum.nix
index 519313f57..6e57d1404 100644
--- a/makefu/1systems/gum.nix
+++ b/makefu/1systems/gum.nix
@@ -26,6 +26,9 @@ in {
../2configs/tinc/retiolum.nix
../2configs/urlwatch.nix
+ # Security
+ ../2configs/sshd-totp.nix
+
# Tools
../2configs/tools/core.nix
../2configs/tools/dev.nix
diff --git a/makefu/2configs/sshd-totp.nix b/makefu/2configs/sshd-totp.nix
new file mode 100644
index 000000000..f9984e245
--- /dev/null
+++ b/makefu/2configs/sshd-totp.nix
@@ -0,0 +1,18 @@
+{ pkgs, ... }:
+# Enables second factor for ssh password login
+
+## Usage:
+# gen-oath-safe <username> totp
+## scan the qrcode with google authenticator (or FreeOTP)
+## copy last line into secrets/<host>/users.oath (chmod 700)
+{
+ security.pam.oath = {
+ # enabling it will make it a requisite of `all` services
+ # enable = true;
+ digits = 6;
+ # TODO assert existing
+ usersFile = (toString <secrets>) + "/users.oath";
+ };
+ # I want TFA only active for sshd with password-auth
+ security.pam.services.sshd.oathAuth = true;
+}