What is MaxUserPort?

The MaxUserPort parameter sets the maximum number of user ports that TCP/IP can assign when an application requests an available user port from the system. You can adjust the value of this parameter to optimize network throughput. The MaxUserPort parameter applies only to the Windows® operating system.

How do I check my dynamic port range?

You can view the dynamic port range on a computer by using the following netsh commands:

  1. netsh int ipv4 show dynamicport tcp.
  2. netsh int ipv4 show dynamicport udp.
  3. netsh int ipv6 show dynamicport tcp.
  4. netsh int ipv6 show dynamicport udp.

What is the default Tcptimedwaitdelay?

It determines the time that must elapse before TCP can release a closed connection and reuse its resources. The recommended value for Max Connections is 100. The recommended value for Min Connections is 10. The default value is 0xF0 (240 seconds = 4 minutes).

How do I change my dynamic port range?

You adjust this range by using the netsh command, as follows: netsh int set dynamic start= number num= range . This command sets the dynamic port range for TCP. The start port is number, and the total number of ports is range.

What is Globalmaxtcpwindowsize?

Determines the largest TCP receive window offered by the system. The receive window is the number of bytes a sender can transmit without receiving an acknowledgment.

What is TCP dynamic port?

The dynamic port numbers (also known as the private port numbers) are the port numbers that are available for use by any application to use in communicating with any other application, using the internet’s Transmission Control Protocol (TCP) or the User Datagram Protocol (UDP).

What causes port exhaustion?

Port exhaustion occurs when a node runs out of available ports. When an application stops using a specific port, the port enters a “time-wait state” before it becomes available for use by another application.

How do I increase my port range?

Increasing available ephemeral ports

  1. Use the following command to display the current dynamic port range: cat /proc/sys/net/ipv4/ip_local_port_range.
  2. Use the following command to set the dynamic port range: echo “5000 65535” > /proc/sys/net/ipv4/ip_local_port_range.

What is So_linger socket option?

The purpose of the SO_LINGER option is to control how the socket is shut down when the function close(2) is called. This option applies only to connection-oriented protocols such as TCP. The default behavior of the kernel is to allow the close(2) function to return immediately to the caller.

What is Tcp_nodelay?

The TCP_NODELAY socket option allows your network to bypass Nagle Delays by disabling Nagle’s algorithm, and sending the data as soon as it’s available. Enabling TCP_NODELAY forces a socket to send the data in its buffer, whatever the packet size.