52 lines
1.3 KiB
Nix
52 lines
1.3 KiB
Nix
{
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config,
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lib,
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pkgs,
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...
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}:
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{
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boot = {
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kernel.sysctl = {
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"net.ipv4.icmp_ignore_bogus_error_responses" = 1;
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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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"net.ipv4.conf.all.accept_source_route" = 0;
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"net.ipv6.conf.all.accept_source_route" = 0;
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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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"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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"net.ipv4.tcp_syncookies" = 1;
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"net.ipv4.tcp_rfc1337" = 1;
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"net.ipv4.tcp_fastopen" = 3;
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};
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# otherwise /tmp is on disk. This *may* be problematic as nix
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# builds in /tmp but I think my swap is large enough...
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tmp.useTmpfs = lib.mkDefault true;
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tmp.cleanOnBoot = lib.mkDefault (!config.boot.tmp.useTmpfs);
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};
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security = {
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protectKernelImage = true;
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sudo.enable = false;
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doas = {
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enable = true;
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extraRules = [
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{
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groups = [ "wheel" ];
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persist = true;
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keepEnv = true;
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}
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];
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};
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};
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}
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