# Ignore ICMP broadcasts
net/ipv4/icmp_echo_ignore_broadcasts = 1
#
# Ignore bogus ICMP errors
net/ipv4/icmp_ignore_bogus_error_responses = 1
# Do not accept ICMP redirects (prevent MITM attacks)
net/ipv4/conf/all/accept_redirects = 0
# Do not send ICMP redirects (we are not a router)
net/ipv4/conf/all/send_redirects = 0
#
# Do not accept IP source route packets (we are not a router)
net/ipv4/conf/all/accept_source_route = 0

net.ipv4.tcp_fin_timeout=15
net.ipv4.tcp_max_syn_backlog = 4096
net.ipv4.tcp_synack_retries = 5
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.ipv4.tcp_rmem = 4096 87380 16777216
net.ipv4.tcp_wmem = 4096 65536 16777216
net.ipv4.tcp_no_metrics_save = 1
net.ipv4.ip_local_port_range = 9000 61000

net.ipv4.tcp_low_latency = 1
net.ipv4.tcp_tw_reuse = 1
net.core.somaxconn = 2048
net.ipv4.tcp_sack = 0
net.ipv4.tcp_dsack = 0
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_syncookies=0

fs.file-max = 253184

#added 12.13.2010 to improve latency performance
# Turn off the tcp_window_scaling
net.ipv4.tcp_window_scaling = 0
# Decrease the time default value for tcp_keepalive_time connection
net.ipv4.tcp_keepalive_time = 1800

# Increase the tcp-time-wait buckets pool size (default was 180000)
net.ipv4.tcp_max_tw_buckets = 1440000