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testing the new config before pushing to main

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This commit is contained in:
ooks-io 2024-01-19 20:28:53 +13:00
parent a545953c2d
commit c53123d2c5
38 changed files with 370 additions and 198 deletions
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100
system/modules/security/default.nix
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@ -1,100 +0,0 @@
{ lib, config, pkgs, ... }:
let
cfg = config.systemModules.security;
in
{
config = lib.mkIf cfg.enable {
environment.systemPackages = with pkgs; [
polkit_gnome
];
programs = {
gnupg.agent = {
enable = true;
enableSSHSupport = true;
};
_1password = {
enable = true;
};
_1password-gui = {
enable = true;
polkitPolicyOwners = [ "ooks" ];
};
};
security = {
polkit = {
enable = true;
};
pam.services = { swaylock = { }; };
sudo = {
enable = true;
wheelNeedsPassword = false;
};
};
rtkit.enable = true;
# security tweaks borrowed from @hlissner
boot.kernel.sysctl = {
# The Magic SysRq key is a key combo that allows users connected to the
# system console of a Linux kernel to perform some low-level commands.
# Disable it, since we don't need it, and is a potential security concern.
"kernel.sysrq" = 0;
## TCP hardening
# Prevent bogus ICMP errors from filling up logs.
"net.ipv4.icmp_ignore_bogus_error_responses" = 1;
# Reverse path filtering causes the kernel to do source validation of
# packets received from all interfaces. This can mitigate IP spoofing.
"net.ipv4.conf.default.rp_filter" = 1;
"net.ipv4.conf.all.rp_filter" = 1;
# Do not accept IP source route packets (we're not a router)
"net.ipv4.conf.all.accept_source_route" = 0;
"net.ipv6.conf.all.accept_source_route" = 0;
# Don't send ICMP redirects (again, we're not a router)
"net.ipv4.conf.all.send_redirects" = 0;
"net.ipv4.conf.default.send_redirects" = 0;
# Refuse ICMP redirects (MITM mitigations)
"net.ipv4.conf.all.accept_redirects" = 0;
"net.ipv4.conf.default.accept_redirects" = 0;
"net.ipv4.conf.all.secure_redirects" = 0;
"net.ipv4.conf.default.secure_redirects" = 0;
"net.ipv6.conf.all.accept_redirects" = 0;
"net.ipv6.conf.default.accept_redirects" = 0;
# Protects against SYN flood attacks
"net.ipv4.tcp_syncookies" = 1;
# Incomplete protection again TIME-WAIT assassination
"net.ipv4.tcp_rfc1337" = 1;
## TCP optimization
# TCP Fast Open is a TCP extension that reduces network latency by packing
# data in the sender’s initial TCP SYN. Setting 3 = enable TCP Fast Open for
# both incoming and outgoing connections:
"net.ipv4.tcp_fastopen" = 3;
# Bufferbloat mitigations + slight improvement in throughput & latency
"net.ipv4.tcp_congestion_control" = "bbr";
"net.core.default_qdisc" = "cake";
};
boot.kernelModules = ["tcp_bbr"];
systemd = {
user.services.polkit-gnome-authentication-agent-1 = {
description = "polkit-gnome-authentication-agent-1";
wantedBy = [ "graphical-session.target" ];
wants = [ "graphical-session.target" ];
after = [ "graphical-session.target" ];
serviceConfig = {
Type = "simple";
ExecStart = "${pkgs.polkit_gnome}/libexec/polkit-gnome-authentication-agent-1";
Restart = "on-failure";
RestartSec = 1;
TimeoutStopSec = 10;
};
};
};
};
}