diff --git a/scripts/net_optimize.sh b/scripts/net_optimize.sh
new file mode 100755
index 0000000..61a9b70
--- /dev/null
+++ b/scripts/net_optimize.sh
@@ -0,0 +1,32 @@
+#!bin/bash
+
+# set ulimit
+if grep -Eqi "ulimit -SHn" /etc/profile || grep -Eqi "* soft nofile|* hard nofile" /etc/security/limits.conf; then
+        echo "ulimit has been optimized!"
+else
+        echo "ulimit -SHn 1024000" >> /etc/profile
+        ulimit -n 1024000
+        echo "* soft nofile 1024000" >> /etc/security/limits.conf
+        echo "* hard nofile 1024000" >> /etc/security/limits.conf
+fi
+
+# enable bbr
+if grep -Eqi "bbr" /etc/sysctl.conf; then
+        echo "bbr has enabled!"
+else
+        echo "enable bbr"
+        echo "net.core.default_qdisc=fq" >> /etc/sysctl.conf
+        echo "net.ipv4.tcp_congestion_control=bbr" >> /etc/sysctl.conf
+        sysctl -p
+        sysctl net.ipv4.tcp_available_congestion_control
+fi
+
+# enable ip forward
+echo 1 > /proc/sys/net/ipv4/ip_forward
+
+# show results
+echo "results:"
+ulimit -n
+lsmod | grep bbr
+
+echo "DONE!!!"