Netstat of traceroute, netstat, ping, telnet network Tools

Netstat:

In the Internet RFC standard, netstat is defined as: Netstat is a program that accesses the state of the network connection and its associated information in the kernel, and it provides reports on TCP connections, TCP and UDP snooping, and process memory management. Netstat is a console command and is a very useful tool for monitoring TCP/IP networks, which can display routing tables, actual network connections, and status information for each network interface device. The netstat is used to display statistics related to IP, TCP, UDP, and ICMP protocols, and is typically used to verify the network connectivity of each port on the machine. If your computer sometimes receives data packets that cause error data or failures, you don't have to be surprised that TCP/IP can tolerate these types of errors and be able to automatically re-send packets. But if the cumulative number of errors accounts for a significant percentage of the IP datagram received, or if its number is increasing rapidly, then you should use Netstat to find out why these situations occur. Netstat-an are generally used to display all connected ports and are represented by numbers. The function of the netstat command is to display network connections, routing tables, and network interface information to let users know which network connections are in operation.[1] When used without parameters, Netstat displays the active TCP connection.

Netstat (option)

Options

-A or--all: Displays the socket;-a< network type > or--< network type in all connections;: Lists the relevant addresses in the network type connection;-C or--continuous: Continuously list network status ;-C or--cache: Displays the cache information for the router configuration,-E or--extend: Displays other relevant information about the network;-F or--fib: Show fib;-g or--groups: Displays the multi-broadcast feature group members list;-H or--  Help: online assistance;-I or--interfaces: Displays the Web interface information form;-L or--listening: Displays the Socket;-m or--masquerade of the server in the monitor: shows the spoofed network connection ;-N or--numeric: use the IP address directly, not through the domain name server;-N or--netlink or--symbolic: Displays the symbolic connection name of the network hardware peripheral device;-O or--timers: Display timer ;-P or--programs: shows the program identification code and program name of the socket being used;-R or--route: Display routing table;-s or--statistice: Display network work information statistics ;-T or--tcp: Displays the connection status of the TCP transport protocol;-U or--UDP: Displays the connection status of the UDP transport protocol;-V or--verbose: Displays the instruction execution process;- V or--version: Displays version information; W or--raw: Displays the connection status of the raw transport protocol,-X or--unix: The effect of this parameter is the same as specifying the "-a Unix" parameter,--ip or--inet: The effect of this parameter is the same as specifying the "-a inet" parameter. 

Netstat of traceroute, netstat, ping, telnet network Tools