nixos/hosts/common/optional/openssh.nix

36 lines
888 B
Nix

{ lib, config, ... }:
let
sshPort = 22;
hasOptinPersistence = config.environment.persistence ? "/persist";
in
{
services.openssh = {
enable = true;
ports = [ sshPort ];
authorizedKeysFiles = lib.mkForce [ "/etc/ssh/authorized_keys.d/%u" ];
hostKeys = [{
path = "${lib.optionalString hasOptinPersistence "/persist"}/etc/ssh/ssh_host_ed25519_key";
type = "ed25519";
}];
settings = {
PasswordAuthentication = false;
PermitRootLogin = "no";
PubKeyAuthentication = "yes";
StreamLocalBindUnlink = "yes";
UsePAM = true;
};
};
security.pam = {
sshAgentAuth.enable = true;
};
programs.ssh.extraConfig = ''
Host git.bitlab21.com
IdentitiesOnly yes
StrictHostKeyChecking no
IdentityFile /etc/ssh/deploy_key-ssh-ed25519
'';
networking.firewall.allowedTCPPorts = [ sshPort ];
}