package/base-files/files/etc/sysctl.conf

   1 kernel.panic=3
   2 net.ipv4.conf.default.arp_ignore=1
   3 net.ipv4.conf.all.arp_ignore=1
   4 net.ipv4.ip_forward=1
   5 net.ipv4.icmp_echo_ignore_broadcasts=1
   6 net.ipv4.icmp_ignore_bogus_error_responses=1
   7 net.ipv4.tcp_ecn=1
   8 net.ipv4.tcp_fin_timeout=30
   9 net.ipv4.tcp_keepalive_time=120
  10 net.ipv4.tcp_syncookies=1
  11 net.ipv4.tcp_timestamps=0
  12 net.ipv4.netfilter.ip_conntrack_max=16384
  13 net.ipv4.netfilter.ip_conntrack_tcp_timeout_established=3600
  14 net.ipv4.netfilter.ip_conntrack_udp_timeout=60
  15 net.ipv4.netfilter.ip_conntrack_udp_timeout_stream=180
  16 # net.ipv6.conf.all.forwarding=1