net.ipv4.ip_forward = 1
net.ipv4.ip_dynaddr = 1
+
net.ipv4.icmp_echo_ignore_broadcasts = 1
net.ipv4.icmp_ignore_bogus_error_responses = 1
+net.ipv4.icmp_ratelimit = 1000
+net.ipv4.icmp_ratemask = 6168
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_fin_timeout = 30