net.ipv4.ip_forward = 0
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.default.accept_source_route = 0
kernel.sysrq = 0
kernel.core_uses_pid = 1
net.ipv4.tcp_synack_retries = 2
net.ipv4.conf.all.send_redirects = 0 net.ipv4.conf.default.send_redirects  = 0
net.ipv4.conf.all.accept_source_route = 0
net.ipv4.conf.all.accept_redirects = 0 net.ipv4.conf.all.secure_redirects = 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.tcp_syncookies = 1
net.ipv4.conf.all.rp_filter = 1 net.ipv4.conf.default.rp_filter = 1
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
kernel.exec-shield = 1
kernel.randomize_va_space = 1
fs.file-max = 65535
kernel.pid_max = 65536
net.ipv4.ip_local_port_range = 2000 65000