config/etc/sysctl.conf

   1 net.ipv4.ip_forward = 1
   2 net.ipv4.ip_dynaddr = 1
   3 net.ipv4.icmp_echo_ignore_broadcasts = 1
   4 net.ipv4.icmp_ignore_bogus_error_responses = 1
   5
   6 net.ipv4.tcp_sack = 0
   7 net.ipv4.tcp_timestamps = 0
   8 net.ipv4.tcp_syncookies = 1
   9 net.ipv4.tcp_fin_timeout = 30
  10 net.ipv4.tcp_window_scaling = 0
  11 net.ipv4.tcp_syn_retries = 3
  12 net.ipv4.tcp_synack_retries = 3
  13
  14 net.ipv4.conf.default.rp_filter = 0
  15 net.ipv4.conf.default.accept_redirects = 0
  16 net.ipv4.conf.default.accept_source_route = 0
  17 net.ipv4.conf.default.log_martians = 1
  18
  19 net.ipv4.conf.all.rp_filter = 0
  20 net.ipv4.conf.all.accept_redirects = 0
  21 net.ipv4.conf.all.accept_source_route = 0
  22 net.ipv4.conf.all.log_martians = 1
  23
  24 kernel.printk = 1 4 1 7
  25 vm.swappiness=0
  26 vm.mmap_min_addr = 4096