sysctl.conf

# Accept IPv6 advertisements when forwarding is enabled
net.ipv6.conf.all.accept_ra = 2

kernel.sysrq=0
vm.swappiness=0
kernel.core_uses_pid=1
kernel.randomize_va_space=1
kernel.msgmnb=65536
kernel.msgmax=65536
net.core.default_qdisc=fq
net.ipv4.tcp_congestion_control=bbr
net.ipv4.tcp_notsent_lowat = 16384
net.ipv4.tcp_syncookies=0
net.ipv4.ip_forward = 0
net.ipv4.conf.all.accept_source_route=0
net.ipv4.conf.default.accept_source_route=0
net.ipv4.conf.all.accept_redirects=0
net.ipv4.conf.default.accept_redirects=0
net.ipv4.conf.all.send_redirects=0
net.ipv4.conf.default.send_redirects=0
net.ipv4.conf.all.rp_filter=1
net.ipv4.conf.default.rp_filter=1
net.ipv4.conf.all.arp_ignore = 1
net.ipv4.conf.default.arp_ignore = 1
net.ipv4.icmp_echo_ignore_all=1
net.ipv4.icmp_echo_ignore_broadcasts=1
net.ipv4.icmp_ignore_bogus_error_responses=1
net.ipv4.conf.all.secure_redirects=0
net.ipv4.conf.default.secure_redirects=0
net.ipv4.conf.all.secure_redirects=0
net.ipv4.conf.default.secure_redirects=0

#options for ss

fs.file-max = 131072
net.core.rmem_max = 8388608
net.core.wmem_max = 8388608
net.core.rmem_default = 8388608
net.core.wmem_default = 8388608
net.core.optmem_max = 8388608
net.core.netdev_max_backlog = 131072
net.core.somaxconn = 131072
net.ipv4.ip_local_port_range = 1024 65535
net.ipv4.tcp_mem = 25600 51200 102400
net.ipv4.tcp_rmem = 4096 1048576 4194304
net.ipv4.tcp_wmem = 4096 1048576 4194304
net.ipv4.tcp_fastopen=3
net.ipv4.tcp_low_latency = 1
net.ipv4.tcp_no_metrics_save = 1
net.ipv4.tcp_adv_win_scale = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_timestamps = 0
net.ipv4.tcp_fin_timeout = 60
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_keepalive_time = 600
net.ipv4.tcp_keepalive_probes = 20
net.ipv4.tcp_keepalive_intvl = 60
net.ipv4.tcp_synack_retries = 1
net.ipv4.tcp_slow_start_after_idle=0
net.ipv4.tcp_max_syn_backlog = 65536
net.ipv4.tcp_max_tw_buckets = 720000
net.ipv4.tcp_mtu_probing = 1