# IPV4
net.ipv4.ip_forward = 0
net.ipv4.conf.default.accept_source_route = 0

net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_synack_retries = 5

net.ipv4.conf.all.send_redirects = 0
net.ipv4.conf.default.send_redirects = 0
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.all.secure_redirects = 0
net.ipv4.conf.all.accept_source_route = 0
 
net.ipv4.conf.all.log_martians = 1
net.ipv4.conf.default.accept_source_route = 0
net.ipv4.conf.default.accept_redirects = 0
net.ipv4.conf.default.secure_redirects = 0
 
net.ipv4.icmp_echo_ignore_broadcasts = 1

net.ipv4.conf.all.rp_filter = 1
net.ipv4.conf.default.rp_filter = 1 

net.ipv4.tcp_rfc1337 = 1

# TCP Tweaks
net.ipv4.tcp_fastopen = 3
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_mtu_probing = 1

# IPV6
net.ipv6.conf.default.router_solicitations = 0

net.ipv6.conf.default.accept_ra_rtr_pref = 0
net.ipv6.conf.default.accept_ra_pinfo = 0
net.ipv6.conf.default.accept_ra_defrtr = 0
 
net.ipv6.conf.default.autoconf = 0
 
net.ipv6.conf.default.dad_transmits = 0
 
net.ipv6.conf.default.max_addresses = 1

# Misc
net.core.netdev_max_backlog = 16384
net.core.somaxconn = 8192