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
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
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
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
How to turn off ICMP (Ping) in Win2000
The full name of ICMP is the Internet control and messaging protocal, the Internet-controlled message/error message protocol, which is used primarily for the transmission of error messages and control
People who know the network must be familiar with the most basic network command of Ping, which is a very useful TCP/IP tool. It can send a small packet to the address you provide, and then listen to whether the machine has a "reply". You can use
Ping Command details
Ping can be used to test the computer name and computer ip address, verify the connection with the remote computer, verify the connection to one or more remote computers by sending icmp echo data packets to the computer and
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