diff options
Diffstat (limited to 'modules/networking/optimise.nix')
| -rw-r--r-- | modules/networking/optimise.nix | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/modules/networking/optimise.nix b/modules/networking/optimise.nix deleted file mode 100644 index c6f2bec..0000000 --- a/modules/networking/optimise.nix +++ /dev/null @@ -1,73 +0,0 @@ -{ - boot = { - kernelModules = [ - "tls" - "tcp_bbr" - ]; - - kernel.sysctl = { - # 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 on 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; - # And other stuff - "net.ipv4.conf.all.log_martians" = true; - "net.ipv4.conf.default.log_martians" = true; - "net.ipv4.icmp_echo_ignore_broadcasts" = true; - "net.ipv6.conf.default.accept_ra" = 0; - "net.ipv6.conf.all.accept_ra" = 0; - "net.ipv4.tcp_timestamps" = 0; - - # 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"; - - # Other stuff that I am too lazy to document - "net.core.optmem_max" = 65536; - "net.core.rmem_default" = 1048576; - "net.core.rmem_max" = 16777216; - "net.core.somaxconn" = 8192; - "net.core.wmem_default" = 1048576; - "net.core.wmem_max" = 16777216; - "net.ipv4.ip_local_port_range" = "16384 65535"; - "net.ipv4.tcp_max_syn_backlog" = 8192; - "net.ipv4.tcp_max_tw_buckets" = 2000000; - "net.ipv4.tcp_mtu_probing" = 1; - "net.ipv4.tcp_rmem" = "4096 1048576 2097152"; - "net.ipv4.tcp_slow_start_after_idle" = 0; - "net.ipv4.tcp_tw_reuse" = 1; - "net.ipv4.tcp_wmem" = "4096 65536 16777216"; - "net.ipv4.udp_rmem_min" = 8192; - "net.ipv4.udp_wmem_min" = 8192; - "net.netfilter.nf_conntrack_generic_timeout" = 60; - "net.netfilter.nf_conntrack_max" = 1048576; - "net.netfilter.nf_conntrack_tcp_timeout_established" = 600; - "net.netfilter.nf_conntrack_tcp_timeout_time_wait" = 1; - }; - }; -} |