35 lines
1.1 KiB
Nix
35 lines
1.1 KiB
Nix
{ config, lib, fn, ... }:
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# For reference:
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# https://infosec.mozilla.org/guidelines/openssh.html
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# https://stribika.github.io/2015/01/04/secure-secure-shell.html
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with lib;
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mkIf (elem "openssh" config.machine.services) {
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services.openssh = {
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enable = true;
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settings.KexAlgorithms = [ "curve25519-sha256@libssh.org" ];
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sftpFlags = [ "-f AUTHPRIV" "-l INFO" ];
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startWhenNeeded = false;
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settings = {
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KbdInteractiveAuthentication = false;
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PasswordAuthentication = false;
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PermitRootLogin = "no";
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};
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extraConfig = let users = concatMapStrings (user: "${user.name} ") config.machine.administrators
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+ (optionalString config.services.gitea.enable (config.services.gitea.user + " "));
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in ''
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UsePAM no
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AllowUsers ${users}
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LogLevel VERBOSE
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'';
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};
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# Add public keys to /etc/ssh/authorized_keys.d
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# This replaces users.users.*.openssh.authorizedKeys.*
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sops.secrets = (fn.sopsHelper
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(user: "users/${user.name}/publicKey")
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config.machine.administrators
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(user: { path = "/etc/ssh/authorized_keys.d/${user.name}"; mode = "444"; })
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);
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}
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