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disable hardened kernel temporarily

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This commit is contained in:
Cyryl Płotnicki 2020-05-02 20:20:22 +01:00
parent b644d7a354
commit b99106d422
4 changed files with 63 additions and 5 deletions
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1
nixos/boot.nix
View file

@ -1,7 +1,6 @@
{ config, pkgs, ... }:
{
fileSystems."/".options = [ "noatime" "nodiratime" "discard" ];
security.lockKernelModules = false;
boot = {
kernel.sysctl = {

5
nixos/boxes/foureighty.nix
View file

@ -3,12 +3,11 @@
networking.hostName = "foureighty";
boot = {
kernelPackages = pkgs.linuxPackagesFor pkgs.linux_hardened;
kernelPackages = pkgs.linuxPackagesFor pkgs.linux_latest;
initrd.luks.devices = {
root = {
device = "/dev/disk/by-uuid/a9e8a44f-15be-4844-a0a1-46892cc5e44e";
preLVM = true;
allowDiscards = true;
};
};
@ -42,10 +41,10 @@
../gfx-intel.nix
../zerotier.nix
../i3/system.nix
../virtualbox.nix
../distributed-builds.nix
];
nix.maxJobs = 2;
nix.buildCores = 6;
}

2
nixos/common.nix
View file

@ -6,11 +6,11 @@ in
{
imports =
[
<nixpkgs/nixos/modules/profiles/hardened.nix>
./syncthing.nix
./gsconnect.nix
./common-hardware.nix
./common-services.nix
./security.nix
];
security.allowUserNamespaces = true;

60
nixos/security.nix Normal file
View file

@ -0,0 +1,60 @@
{ config, pkgs, ... }:
{
nix.allowedUsers = [ "@users" ];
environment.memoryAllocator.provider = "scudo";
environment.variables.SCUDO_OPTIONS = "ZeroContents=1";
security.lockKernelModules = true;
security.protectKernelImage = true;
security.forcePageTableIsolation = true;
security.virtualisation.flushL1DataCache = "always";
security.apparmor.enable = true;
boot.kernelParams = [
"slub_debug=FZP"
"page_poison=1"
"page_alloc.shuffle=1"
];
boot.blacklistedKernelModules = [
# Obscure network protocols
"ax25"
"netrom"
"rose"
# Old or rare or insufficiently audited filesystems
"adfs"
"affs"
"bfs"
"befs"
"cramfs"
"efs"
"erofs"
"exofs"
"freevxfs"
"f2fs"
"hfs"
"hpfs"
"jfs"
"minix"
"nilfs2"
"qnx4"
"qnx6"
"sysv"
"ufs"
];
boot.kernel.sysctl."net.core.bpf_jit_enable" = false;
boot.kernel.sysctl."kernel.ftrace_enabled" = false;
boot.kernel.sysctl."net.ipv4.conf.all.log_martians" = true;
boot.kernel.sysctl."net.ipv4.conf.all.rp_filter" = "1";
boot.kernel.sysctl."net.ipv4.conf.default.log_martians" = true;
boot.kernel.sysctl."net.ipv4.conf.default.rp_filter" = "1";
boot.kernel.sysctl."net.ipv4.icmp_echo_ignore_broadcasts" = true;
boot.kernel.sysctl."net.ipv4.conf.all.accept_redirects" = false;
boot.kernel.sysctl."net.ipv4.conf.all.secure_redirects" = false;
boot.kernel.sysctl."net.ipv4.conf.default.accept_redirects" = false;
boot.kernel.sysctl."net.ipv4.conf.default.secure_redirects" = false;
boot.kernel.sysctl."net.ipv6.conf.all.accept_redirects" = false;
boot.kernel.sysctl."net.ipv6.conf.default.accept_redirects" = false;
boot.kernel.sysctl."net.ipv4.conf.all.send_redirects" = false;
boot.kernel.sysctl."net.ipv4.conf.default.send_redirects" = false;
}