udp port checker

I. OverviewTask Description:Develop a program to obtain the list of Host IP addresses that enable the snmp service in the LAN, and write the corresponding files for other programs to use.Background:SNMP is based on UDP, and the standard SNMP Service uses ports 161 and 162.Ideas:1. Obtain the list of local online hosts;2. Obtain the enabled snmp port (such as 161) of each host;3. Write a specific file in a s

The ports and protocols used by the Samba service:1) Port 137 (UDP)-NetBIOS name service; NMBD2) port 138 (UDP)-NetBIOS Datagram Service 3) port 139 (TCP)-File and print sharing, SMBD (SMB (Server Message Block) protocol, mainly used on LAN, file sharing protocol) 4)

Function: Reads a file file and sends a UDP packet to the specified port on the specified server.2015.9.26 OK#include #include #include #include #include #include #define SERVER_PORT 8000int server_port = 8000;int getserveraddr (char * Addrname,char *addrport){Char sztemp[512]={};Char ipaddr[512]={};Char port[512]={};Char *CFA;FILE *file_fa =fopen ("./send.conf",

Java to obtain the available UDP port number. The TCP method is similar to this one. Method 1: If you do not mind obtaining the port number range, you can use the assumramsocket constructor to define 0 as its port number. The system will assign it an idle Port Number: publi

There was a problem before that you wanted to be able to reuse the port number of UDP, but it didn't work. Today happened to see a piece of code, unexpectedly can achieve the purpose, the Joy of note: IPAddress groupAddress = IPAddress.Parse( "239.0.84.11" ); Socket Listener = new Socket( AddressFamily.InterNetwork,SocketType.Dgram, ProtocolType.Udp ); Listener.SetSocketOption( SocketOptionLevel.Socket,　　

q : A local ISP hosted our SQL Server, but I can't see or connect to a named instance running on that computer. I know that the SQL Server 2000 named instance does not use TCP/IP 1433 ports and that the TCP/IP port used by the SQL Server instance is open. Do you have any suggestions? A: Many people know how to use the SQL Server Network Utility or the SQL Server error log to determine the listening port

Reference http://www.nsclient.org/nscp/wiki/NRPEListener Uncomment the configuration item under [nrpe] In nsclient \ NSC. ini[Nrpe]Port = 5666Command_timeout = 60; Allowed ParametersAllow_arguments = 1Allow_nasty_meta_chars = 0Use_ssl = 1Allowed_hosts = 192.168.1.0/24Socket_timeout = 30 ; # Manually addPerformance_data = 1 Change [nrpe client handlers] to [nrpe handlers] and add the test script or command[Nrpe handlers]; Check_other =-H 192.168.0

Use the NETSTAT-ANB command to display the listener for each port on the server, because the display is too much to look at, so you can only use: Netstat-anb>c:\1.txt command, to save the output to the C-packing directory in the 1.txt file, slowly view. After viewing, learned that all of these UDP ports are Dns.exe program monitoring, this server installed DNS service, is not poisoned? At the comman

This example describes how Python detects whether a remote UDP port is open. Share to everyone for your reference. The implementation methods are as follows: Copy Code code as follows: Import socket Import threading Import time Import struct Import Queue Queue = Queue.queue () def udp_sender (Ip,port): Try ADDR = (ip,

"Done ." - in Print "Connect to remote host%d ..."%Port - to #catch Exception: The server may not have the corresponding service turned on, or the network problem causes the connection failure to occur unexpectedly + Try: - #connecting to the service side theS.connect (("www.baidu.com", port)) * exceptSocket.error as E: $ #ExceptionPanax Notoginseng Print "Strange Error creating socket:%s"%e

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TCP and UDP can bind to the same IP port. #include 　　Linux socket TCP UDP bind synonymous IP and port

I used to encounter a problem. I wanted to reuse the UDP port number, but it never succeeded. Today, I accidentally saw a piece of code to achieve my goal. I'm glad to remember: IPaddress groupaddress = IPaddress. parse ("239.0.84.11 ");Socket listener = new socket (addressfamily. InterNetwork, sockettype. dgram, protocoltype. UDP );Listener. setsocketoption

) #endr1#%sys-5-config_i:configured from console by consoleR1#wBuilding configuration ...[OK]r1#The red ones are the most important commands in this section and commands to understand.After configuring the router we will use the external network of the PC to test can be displayed because we are talking about the intranet address map to the outside network, so we in the external network of the PC access needs to input is the map of the external network of IP Access results display of course, can

During network development today, when sending data to a server, the program listening to UDP ports on the server never received the data. However, after packet capture tools, but what is the reason for capturing data? Fainting .....The program I made on the server was written as a Windows service, so I couldn't find the problem. I was always depressed and found the possible cause.In fact, it is still related to the firewall. In general, the firewall