78 lines
1.9 KiB
Nix
78 lines
1.9 KiB
Nix
{ config, ... }:
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{
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age.secrets = {
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ssh_users_ca = {
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file = ../../secrets/common/ssh/users_ca.age;
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path = "/etc/ssh/users_ca.pub";
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owner = "root";
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group = "root";
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mode = "400";
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};
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};
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services.openssh = {
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enable = true;
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extraConfig = ''
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AcceptEnv LANG LC_*
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AllowAgentForwarding no
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AllowTcpForwarding yes
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AuthenticationMethods publickey
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MaxStartups 10:30:100
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PermitTTY yes
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PermitTunnel no
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PermitUserRC no
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PermitUserEnvironment no
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PrintLastLog yes
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SyslogFacility AUTH
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UsePAM no
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TCPKeepAlive yes
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TrustedUserCAKeys ${config.age.secrets.ssh_users_ca.path}
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VersionAddendum none
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'';
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settings = {
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AllowUsers = [ "root" ];
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PasswordAuthentication = false;
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KbdInteractiveAuthentication = false;
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LogLevel = "VERBOSE";
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PermitRootLogin = "yes";
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Ciphers = [
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"chacha20-poly1305@openssh.com"
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"aes256-gcm@openssh.com"
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"aes128-gcm@openssh.com"
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"aes256-ctr"
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"aes192-ctr"
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"aes128-ctr"
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];
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KexAlgorithms = [
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"curve25519-sha256@libssh.org"
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"ecdh-sha2-nistp521"
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"ecdh-sha2-nistp384"
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"ecdh-sha2-nistp256"
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"diffie-hellman-group-exchange-sha256"
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];
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Macs = [
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"hmac-sha2-512-etm@openssh.com"
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"hmac-sha2-256-etm@openssh.com"
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"umac-128-etm@openssh.com"
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"hmac-sha2-512"
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"hmac-sha2-256"
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"umac-128@openssh.com"
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];
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};
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sftpFlags = [
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"-f AUTHPRIV"
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"-l INFO"
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];
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};
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users.users.root.openssh.authorizedKeys.keys = [
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"cert-authority,no-touch-required,principals=\"any,newcomer,${config.networking.fqdn}\" ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBIpT7d7WeR88bs53KkNkZNOzkPJ7CQ5Ui6Wl9LXzAjjIdH+hKJieBMHrKew7+kzxGYaTqXWF1fQWsACG6aniy7VZpsdgTaNw7qr9frGfmo950V7IlU6w1HRc5c+3oVBWpg=="
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];
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}
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