Ping through ICMP echo request and response
Some good examples of Ping: From http://www.thegeekstuff.com/2009/11/ping-tutorial-13-effective-ping-command-examples/ Ping Example 1. Increase or decrease the time interval between packets
By default
Ping command usage
Ping is a frequently used utility used to determine whether a local host can exchange (send and receive) data packets with another host. Based on the returned message, you can infer whether the TCP/IP parameter is set correctly
Ping is a veryuseful utility used to determine the speed of a network connection. itestablishes a socket connection with the given hostname and sends a data packetusing ICMP protocol. the host then in reply send back a packet. the time takento send
1) how to view the port opened on the local machine:
Run the netstat-An command to view details! Next, stat has some English letters. Let me briefly explain what these English letters represent ~
Listen: listens for connection requests from remote
Ping is a frequently used utility used to determine whether the local host can exchange, send, and receive data packets with another host. Based on the returned information, we can infer whether the TCP/IP parameter is set correctly and whether the
Today, there is a POS device to the Internet, do not know his MAC address, can not allocate IP, only binding IP to the Internet.
First give a random set of IP. With a ping command, comment, the device is pass. Then use ARP-A to view the MAC address
Ping is a frequently used utility used to determine whether a local host can exchange (send and receive) data packets with another host. Based on the returned information, we can infer whether the TCP/IP parameter is set correctly and whether the
Ping is a very frequently used utility that determines whether a local host can exchange (send and receive) datagrams with another host. Based on the information returned, we can infer whether the TCP/IP parameters are set correctly and run
Prohibit the use of PING commands under Linux
Enter the Linux system with root and edit the file Icmp_echo_ignore_allVi/proc/sys/net/ipv4/icmp_echo_ignore_allTo disable ping after changing its value to 1To unblock ping after changing its
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