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|
{
config,
options,
lib,
pkgs,
...
}:
let
cfg = config.nixfiles.modules.openssh;
in
{
options.nixfiles.modules.openssh = {
client.enable = lib.mkEnableOption "OpenSSH client";
server = {
enable = lib.mkEnableOption "OpenSSH server";
ports = lib.mkOption {
description = "Ports.";
inherit (options.services.openssh.ports) type;
default = [ 22022 ]; # Port 22 should be occupied by a tarpit by default.
};
};
};
config = lib.mkMerge [
(lib.mkIf cfg.client.enable {
hm = {
home.packages = with pkgs; [
mosh
sshfs
sshpass
];
programs.ssh = {
enable = true;
hashKnownHosts = true;
controlMaster = "auto";
controlPersist = "15m";
controlPath = "${config.my.home}/.ssh/S.%r@%n:%p";
serverAliveCountMax = 30;
serverAliveInterval = 60;
matchBlocks =
let
internalServers =
lib.my.configurations
|> lib.filterAttrs (_: attr: lib.hasAttr "wireguard" attr)
|> lib.mapAttrs (
name: _: {
hostname = "${name}.${lib.my.domain.shire}";
}
);
in
{
gitolite = {
user = "git";
hostname = "git.${lib.my.domain.shire}";
};
}
|> lib.recursiveUpdate internalServers
|> lib.mapAttrs' (
name:
{
hostname ? name,
port ? 22022,
user ? lib.my.username,
}:
lib.nameValuePair name {
inherit
hostname
port
user
;
forwardAgent = true;
}
);
};
};
})
(lib.mkIf cfg.server.enable {
ark.files = [
"/etc/ssh/ssh_host_ed25519_key"
"/etc/ssh/ssh_host_ed25519_key.pub"
"/etc/ssh/ssh_host_rsa_key"
"/etc/ssh/ssh_host_rsa_key.pub"
];
programs.mosh.enable = true;
services = {
openssh = {
enable = true;
inherit (cfg.server) ports;
settings = {
PasswordAuthentication = false;
PermitRootLogin = "no";
StreamLocalBindUnlink = true;
};
};
fail2ban.jails.sshd = {
enabled = true;
settings.mode = "aggressive";
};
};
})
];
}
|
