Seven Of Aces
0385f5f40a
modified: hosts/shared/nixos/shared_config.nix modified: modules/desktop/chat.nix modified: modules/desktop/games.nix modified: modules/system/audio.nix
96 lines
No EOL
3.7 KiB
Nix
96 lines
No EOL
3.7 KiB
Nix
{
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inputs,
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outputs,
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lib,
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config,
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pkgs,
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...
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}: {
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environment.systemPackages = with pkgs; [
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/* ------------------------- Essential Applications ------------------------- */
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git
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wine
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bottles
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onlyoffice-bin
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google-chrome
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microsoft-edge
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/* ---------------------------- System Utilities ---------------------------- */
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gnupg ffmpeg unzip
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mpv gparted
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libappindicator-gtk3
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pavucontrol
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hyfetch
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];
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programs.firefox.enable = true;
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/* ----------------------------- Security Tweaks ---------------------------- */
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# sets hidepid=2 on /proc (make process info visible only to owning user)
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# NOTE Was removed on nixpkgs-unstable because it doesn't do anything
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# security.hideProcessInformation = true;
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# tmpfs = /tmp is mounted in ram. Doing so makes temp file management speedy
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# on ssd systems and more secure (and volatile)! Because it's wiped on reboot.
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boot.tmp.useTmpfs = lib.mkDefault true;
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# If not using tmpfs, which is naturally purged on reboot, we must clean it
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# /tmp ourselves. /tmp should be volatile storage!
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boot.tmp.cleanOnBoot = lib.mkDefault (!config.boot.tmp.useTmpfs);
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# Fix a security hole in place for backwards compatibility. See desc in
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# nixpkgs/nixos/modules/system/boot/loader/systemd-boot/systemd-boot.nix
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boot.loader.systemd-boot.editor = lib.mkDefault false;
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boot.kernel.sysctl = {
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# The Magic SysRq key is a key combo that allows users connected to the
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# system console of a Linux kernel to perform some low-level commands.
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# Disable it, since we don't need it, and is a potential security concern.
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"kernel.sysrq" = 0;
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## TCP hardening
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# Prevent bogus ICMP errors from filling up logs.
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"net.ipv4.icmp_ignore_bogus_error_responses" = 1;
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# Reverse path filtering causes the kernel to do source validation of
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# packets received from all interfaces. This can mitigate IP spoofing.
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"net.ipv4.conf.default.rp_filter" = 1;
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"net.ipv4.conf.all.rp_filter" = 1;
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# Do not accept IP source route packets (we're not a router)
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"net.ipv4.conf.all.accept_source_route" = 0;
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"net.ipv6.conf.all.accept_source_route" = 0;
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# Don't send ICMP redirects (again, we're not a router)
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"net.ipv4.conf.all.send_redirects" = 0;
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"net.ipv4.conf.default.send_redirects" = 0;
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# Refuse ICMP redirects (MITM mitigations)
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"net.ipv4.conf.all.accept_redirects" = 0;
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"net.ipv4.conf.default.accept_redirects" = 0;
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"net.ipv4.conf.all.secure_redirects" = 0;
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"net.ipv4.conf.default.secure_redirects" = 0;
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"net.ipv6.conf.all.accept_redirects" = 0;
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"net.ipv6.conf.default.accept_redirects" = 0;
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# Protects against SYN flood attacks
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"net.ipv4.tcp_syncookies" = 1;
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# Incomplete protection again TIME-WAIT assassination
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"net.ipv4.tcp_rfc1337" = 1;
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## TCP optimization
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# TCP Fast Open is a TCP extension that reduces network latency by packing
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# data in the sender’s initial TCP SYN. Setting 3 = enable TCP Fast Open for
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# both incoming and outgoing connections:
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"net.ipv4.tcp_fastopen" = 3;
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# Bufferbloat mitigations + slight improvement in throughput & latency
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"net.ipv4.tcp_congestion_control" = "bbr";
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"net.core.default_qdisc" = "cake";
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};
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boot.kernelModules = [ "tcp_bbr" ];
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# Harden SSH client
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programs.ssh = {
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# Known vulnerability. See
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# https://security.stackexchange.com/questions/110639/how-exploitable-is-the-recent-useroaming-ssh-vulnerability
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extraConfig = ''
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Host *
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UseRoaming no
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'';
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};
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} |