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41 lines
1 KiB
Nix
41 lines
1 KiB
Nix
{ lib, config, ... }:
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let
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# Sops needs acess to the keys before the persist dirs are even mounted; so
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# just persisting the keys won't work, we must point at /persist
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hasOptinPersistence = config.environment.persistence ? "/persist";
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in
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{
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services = {
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openssh = {
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enable = true;
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settings = {
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# Harden
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PasswordAuthentication = false;
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PermitRootLogin = lib.mkDefault "no";
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# Automatically remove stale sockets
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StreamLocalBindUnlink = "yes";
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# Allow forwarding ports to everywhere
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GatewayPorts = "clientspecified";
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};
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hostKeys = [{
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path = "${lib.optionalString hasOptinPersistence "/persist"}/etc/ssh/ssh_host_ed25519_key";
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type = "ed25519";
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}];
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};
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sshguard = {
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enable = true;
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whitelist = [
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# TODO
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"192.168.40.0/24"
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"10.0.0.0/8"
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"100.0.0.0/8"
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];
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};
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};
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networking.firewall.allowedTCPPorts = [ 22 ];
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# Passwordless sudo when SSH'ing with keys
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security.pam.sshAgentAuth.enable = true;
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}
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