精简版.优化网速三网

精简修正版

cat > /etc/sysctl.conf <<EOF
#基础网络优化
net.ipv4.ip_forward = 0
net.ipv4.conf.all.send_redirects = 0
net.ipv4.conf.default.send_redirects = 0

#TIME_WAIT连接优化，解决访问转圈、连接堆积
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_fin_timeout = 25
net.ipv4.tcp_keepalive_time = 600
net.ipv4.tcp_keepalive_intvl = 30
net.ipv4.tcp_keepalive_probes = 3

#本地随机端口范围
net.ipv4.ip_local_port_range = 1024 65535

#系统缓冲区并发优化
net.core.somaxconn = 65535
net.core.rmem_max = 67108864
net.core.wmem_max = 67108864
net.ipv4.tcp_rmem = 4096 87380 67108864
net.ipv4.tcp_wmem = 4096 65536 67108864
net.ipv4.tcp_max_syn_backlog = 8192
net.ipv4.tcp_max_tw_buckets = 5000

#IPv6优化
net.ipv6.conf.all.accept_redirects = 0
net.ipv6.conf.default.accept_redirects = 0
net.ipv6.conf.all.disable_ipv6 = 0
EOF
sysctl -p

精简修正版