配置Sysctl优化服务器

　　配置Sysctl 　　编辑此文件： 　　nano -w /etc/sysctl.conf 　　如果该文件为空，则输入以下内容，否则请根据情况自己做调整： 　　# Controls source route verification 　　# Default should work for all interfaces 　　net.ipv4.conf.default.rp_filter = 1 　　# net.ipv4.conf.all.rp_filter = 1 　　# net.ipv4.conf.lo.rp_filter = 1 　　# net.ipv4.conf.eth0.rp_filter = 1 　　# Disables IP source routing 　　# Default should work for all interfaces 　　net.ipv4.conf.default.accept_source_route = 0 　　# net.ipv4.conf.all.accept_source_route = 0 　　# net.ipv4.conf.lo.accept_source_route = 0 　　# net.ipv4.conf.eth0.accept_source_route = 0 　　# Controls the System Request debugging functionality of the kernel 　　kernel.sysrq = 0 　　# Controls whether core dumps will append the PID to the core filename. 　　# Useful for debugging multi-threaded applications. 　　kernel.core_uses_pid = 1 　　# Increase maximum amount of memory allocated to shm 　　# Only uncomment if needed! 　　# kernel.shmmax = 67108864 　　# Disable ICMP Redirect Acceptance 　　# Default should work for all interfaces 　　net.ipv4.conf.default.accept_redirects = 0 　　# net.ipv4.conf.all.accept_redirects = 0 　　# net.ipv4.conf.lo.accept_redirects = 0 　　# net.ipv4.conf.eth0.accept_redirects = 0 　　# Enable Log Spoofed Packets, Source Routed Packets, Redirect Packets 　　# Default should work for all interfaces 　　net.ipv4.conf.default.log_martians = 1 　　# net.ipv4.conf.all.log_martians = 1 　　# net.ipv4.conf.lo.log_martians = 1 　　# net.ipv4.conf.eth0.log_martians = 1 　　# Decrease the time default value for tcp_fin_timeout connection 　　net.ipv4.tcp_fin_timeout = 25 　　# Decrease the time default value for tcp_keepalive_time connection 　　net.ipv4.tcp_keepalive_time = 1200 　　# Turn on the tcp_window_scaling 　　net.ipv4.tcp_window_scaling = 1 　　# Turn on the tcp_sack 　　net.ipv4.tcp_sack = 1 　　# tcp_fack should be on because of sack 　　三三在线http://www.33ol.com/，专注于高防服务器租用和托管，杭州四川佛山东莞国外一手资源，提供7*24小时全年无休的售后服务。企点Q：2852361322电话：13924367540