172dc1336f
This module implements a significant refactoring in grsecurity
configuration for NixOS, making it far more usable by default and much
easier to configure.
- New security.grsecurity NixOS attributes.
- All grsec kernels supported
- Allows default 'auto' grsec configuration, or custom config
- Supports custom kernel options through kernelExtraConfig
- Defaults to high-security - user must choose kernel, server/desktop
mode, and any virtualisation software. That's all.
- kptr_restrict is fixed under grsecurity (it's unwriteable)
- grsecurity patch creation is now significantly abstracted
- only need revision, version, and SHA1
- kernel version requirements are asserted for sanity
- built kernels can have the uname specify the exact grsec version
for development or bug reports. Off by default (requires
`security.grsecurity.config.verboseVersion = true;`)
- grsecurity sysctl support
- By default, disabled.
- For people who enable it, NixOS deploys a 'grsec-lock' systemd
service which runs at startup. You are expected to configure sysctl
through NixOS like you regularly would, which will occur before the
service is started. As a result, changing sysctl settings requires
a reboot.
- New default group: 'grsecurity'
- Root is a member by default
- GRKERNSEC_PROC_GID is implicitly set to the 'grsecurity' GID,
making it possible to easily add users to this group for /proc
access
- AppArmor is now automatically enabled where it wasn't before, despite
implying features.apparmor = true
The most trivial example of enabling grsecurity in your kernel is by
specifying:
security.grsecurity.enable = true;
security.grsecurity.testing = true; # testing 3.13 kernel
security.grsecurity.config.system = "desktop"; # or "server"
This specifies absolutely no virtualisation support. In general, you
probably at least want KVM host support, which is a little more work.
So:
security.grsecurity.enable = true;
security.grsecurity.stable = true; # enable stable 3.2 kernel
security.grsecurity.config = {
system = "server";
priority = "security";
virtualisationConfig = "host";
virtualisationSoftware = "kvm";
hardwareVirtualisation = true;
}
This module has primarily been tested on Hetzner EX40 & VQ7 servers
using NixOps.
Signed-off-by: Austin Seipp <aseipp@pobox.com>
245 lines
4.8 KiB
Nix
245 lines
4.8 KiB
Nix
# This module defines the global list of uids and gids. We keep a
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# central list to prevent id collisions.
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{ config, pkgs, ... }:
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{
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options = {
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ids.uids = pkgs.lib.mkOption {
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internal = true;
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description = ''
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The user IDs used in NixOS.
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'';
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};
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ids.gids = pkgs.lib.mkOption {
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internal = true;
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description = ''
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The group IDs used in NixOS.
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'';
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};
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};
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config = {
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ids.uids = {
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root = 0;
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nscd = 1;
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sshd = 2;
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ntp = 3;
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messagebus = 4; # D-Bus
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haldaemon = 5;
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nagios = 6;
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vsftpd = 7;
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ftp = 8;
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bitlbee = 9;
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avahi = 10;
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atd = 12;
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zabbix = 13;
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postfix = 14;
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dovecot = 15;
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tomcat = 16;
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pulseaudio = 22; # must match `pulseaudio' GID
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gpsd = 23;
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polkituser = 28;
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uptimed = 29;
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ddclient = 30;
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davfs2 = 31;
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privoxy = 32;
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osgi = 34;
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tor = 35;
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cups = 36;
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foldingAtHome = 37;
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sabnzbd = 38;
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kdm = 39;
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ghostOne = 40;
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git = 41;
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fourStore = 42;
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fourStoreEndpoint = 43;
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virtuoso = 44;
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rtkit = 45;
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dovecot2 = 46;
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dovenull2 = 47;
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unbound = 48;
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prayer = 49;
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mpd = 50;
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clamav = 51;
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fprot = 52;
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bind = 53;
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wwwrun = 54;
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spamd = 56;
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nslcd = 58;
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nginx = 60;
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chrony = 61;
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smtpd = 63;
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smtpq = 64;
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supybot = 65;
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iodined = 66;
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graphite = 68;
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statsd = 69;
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transmission = 70;
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postgres = 71;
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smbguest = 74;
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varnish = 75;
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dd-agent = 76;
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lighttpd = 77;
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lightdm = 78;
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freenet = 79;
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ircd = 80;
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bacula = 81;
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almir = 82;
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deluge = 83;
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mysql = 84;
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rabbitmq = 85;
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activemq = 86;
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gnunet = 87;
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oidentd = 88;
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quassel = 89;
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amule = 90;
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minidlna = 91;
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elasticsearch = 92;
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tcpcryptd = 93; # tcpcryptd uses a hard-coded uid. We patch it in Nixpkgs to match this choice.
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zope2 = 94;
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firebird = 95;
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redis = 96;
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haproxy = 97;
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mongodb = 98;
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openldap = 99;
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memcached = 100;
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cgminer = 101;
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munin = 102;
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logcheck = 103;
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nix-ssh = 104;
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dictd = 105;
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couchdb = 106;
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searx = 107;
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kippo = 108;
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jenkins = 109;
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systemd-journal-gateway = 110;
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notbit = 111;
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ngircd = 112;
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btsync = 113;
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minecraft = 114;
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monetdb = 115;
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rippled = 116;
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murmur = 117;
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foundationdb = 118;
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newrelic = 119;
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starbound = 120;
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# When adding a uid, make sure it doesn't match an existing gid.
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nixbld = 30000; # start of range of uids
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nobody = 65534;
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};
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ids.gids = {
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root = 0;
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wheel = 1;
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kmem = 2;
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tty = 3;
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messagebus = 4; # D-Bus
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haldaemon = 5;
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disk = 6;
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vsftpd = 7;
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ftp = 8;
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bitlbee = 9;
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avahi = 10;
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atd = 12;
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postfix = 13;
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postdrop = 14;
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dovecot = 15;
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audio = 17;
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floppy = 18;
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uucp = 19;
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lp = 20;
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tomcat = 21;
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pulseaudio = 22; # must match `pulseaudio' UID
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gpsd = 23;
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cdrom = 24;
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tape = 25;
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video = 26;
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dialout = 27;
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#polkituser = 28; # currently unused, polkitd doesn't need a group
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utmp = 29;
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davfs2 = 31;
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privoxy = 32;
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disnix = 33;
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osgi = 34;
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ghostOne = 40;
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git = 41;
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fourStore = 42;
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fourStoreEndpoint = 43;
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virtuoso = 44;
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dovecot2 = 46;
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prayer = 49;
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mpd = 50;
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clamav = 51;
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fprot = 52;
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wwwrun = 54;
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adm = 55;
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spamd = 56;
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networkmanager = 57;
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nslcd = 58;
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scanner = 59;
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nginx = 60;
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systemd-journal = 62;
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smtpd = 63;
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smtpq = 64;
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supybot = 65;
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iodined = 66;
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libvirtd = 67;
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graphite = 68;
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transmission = 70;
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postgres = 71;
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vboxusers = 72;
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vboxsf = 73;
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smbguest = 74;
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varnish = 75;
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dd-agent = 76;
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lighttpd = 77;
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lightdm = 78;
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freenet = 79;
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ircd = 80;
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bacula = 81;
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almir = 82;
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deluge = 83;
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mysql = 84;
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rabbitmq = 85;
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activemq = 86;
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gnunet = 87;
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oidentd = 88;
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quassel = 89;
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amule = 90;
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minidlna = 91;
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haproxy = 92;
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openldap = 93;
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connman = 94;
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munin = 95;
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keys = 96;
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dictd = 105;
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couchdb = 106;
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searx = 107;
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kippo = 108;
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jenkins = 109;
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systemd-journal-gateway = 110;
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notbit = 111;
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monetdb = 115;
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foundationdb = 118;
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newrelic = 119;
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starbound = 120;
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grsecurity = 121;
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# When adding a gid, make sure it doesn't match an existing uid.
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users = 100;
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nixbld = 30000;
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nogroup = 65534;
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};
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};
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}
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