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#!/bin/sh

# socket queue

# sysctl -w net.ipv4.tcp_max_syn_backlog=4096sysctl -w net.ipv4.tcp_max_syn_backlog=262144# sysctl -w net.ipv4.tcp_syncookies=1sysctl -w net.ipv4.tcp_syncookies=0sysctl -w net.ipv4.tcp_fin_timeout=3#TIME_WAIT settingsysctl -w net.ipv4.tcp_keepalive_time=300sysctl -w net.ipv4.tcp_tw_reuse=1sysctl -w net.ipv4.tcp_tw_recycle=1sysctl -w net.ipv4.tcp_no_metrics_save=1sysctl -w net.core.somaxconn=262144sysctl -w net.ipv4.tcp_max_orphans=262144sysctl -w net.ipv4.tcp_synack_retries=2sysctl -w net.ipv4.tcp_syn_retries=2

#sysctl -w net.core.wmem_max="262144"

sysctl -w net.core.wmem_max="16777216"sysctl -w net.core.rmem_max="16777216"#sysctl -w net.ipv4.tcp_wmem="4096 65536 262144"sysctl -w net.ipv4.tcp_wmem="4096 65536 16777216"sysctl -w net.ipv4.tcp_rmem="4096 87380 16777216"sysctl -w net.core.netdev_max_backlog=30000

# sysctl -w net.ipv4.ip_local_port_range="1024 65536"

sysctl -w net.ipv4.ip_local_port_range="5000 65536"

#redirects

# sysctl -w net.ipv4.conf.all.send_redirects=0# sysctl -w net.ipv4.conf.all.accept_redirects=0#Source routing#Drop all source route packets.# sysctl -w net.ipv4.conf.all.accept_source_route=0#Do not forward source routed frames.# sysctl -w net.ipv4.conf.all.forwarding=0# sysctl -w net.ipv4.conf.all.mc_forwarding=0#Broadcast ECHO response# sysctl -w net.ipv4.icmp_echo_ignore_broadcasts=1

# sysctl -w kernel.shmmax=67108864

# sysctl -w kernel.shmall=33554432# sysctl -w kernel.shmmni=8388608

ulimit -HSn 51200

 

 

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