how to perform traceroute

telnet : The Telnet protocol is a member of the TCP/IP protocol family and is the standard protocol and main way of Internet remote Login service. It provides users with the ability to perform remote host work on the local computer. Use the Telnet program on the end user's computer to connect to the server. End users can enter commands in the Telnet program that run on the server as if they were entered directly on the server's console. The server ca

Role:A router, gateway that looks at which IP addresses the packet passed through during transmission.Working principle:First send a TTL of 1 UDP packets to the remote host, according to the protocol, the router receives the packet, the TTL value minus 1, when the TTL is 0, the router discards the packet, and sends the sender back an ICMP packet, the packet contains the router's own IP address. Similarly, the host that executes the traceroute host con

the destination IP address, Ask the other party to return a packet of the same size to determine whether two network machines are connected, how much delay. Ping refers to end-to-end connectivity, which is often used as a check for usability, but some virus Trojans force a large number of remote ping commands to preempt your network resources, causing the system to slow down and slow down. Ping intrusion is strictly forbidden as a basic function of most firewalls to provide users with a choice.

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;-agroups: Displays the multi-broadcast feature group members list;-H or-- Help: online assistance;-I or--

Now there is a need for a PC-side page to perform an animation as soon as the PC starts to perform this animation then the client is also the mobile side to perform this animation here's a synchronous problem. PC-side animations have time limitations such as 10-second animation completion then how do I go to notify the mobile side to start performing this animati

Perform catastrophic recovery-1 and perform disaster-1Perform disaster recovery:[Oracle @ oracle ~] $ Sqlplus/as sysdbaSQL * Plus: Release 10.2.0.5.0-Production on Thu Nov 6 20:23:30 2014Copyright (c) 1982,201 0, Oracle. All Rights Reserved.Connected:Oracle Database 10g Enterprise Edition Release 10.2.0.5.0-64bit ProductionWith the Partitioning, Oracle Label Security, OLAP, Data Mining Scoring EngineAnd Rea

Perform a shortest copy through the attribute and perform a shortest copy on the attribute. In the past two days, I have read a code to be handed over by a departing colleague. The method of copying a copy is quite good. I will record it here. I. Method body Is a static method CopyHelper, which contains the following three parts 1. Add an extension method to the PropertyInfo [] type to check whether fields

Error Description: Java. SQL. sqlexception: couldn't perform the operation setautocommit: You can't perform any operations on this connection. it has been automatically closed by proxool for some reason (see logs ).At org. logicalcobwebs. proxool. wrappedconnection. Invoke (wrappedconnection. Java: 207)At org. logicalcobwebs. proxool. wrappedconnection. Intercept (wrappedconnection. Java: 87)At $ java. SQL.

? Perform a full recovery after losing critical or non-critical data files? Restore with incremental update backup? Switch to image copy for quick recovery? Restore the database to a new host? Using Backup control files for recovery Using the Rman Restore and recover commands ? Restore command: Restoring a database file from a backup? Recover command: Recover restored files RMAN> SQL ' ALTER tablespace inv_tbs OFFLINE IMMEDIATE ' by appl

A common use in VPS is to perform tasks regularly, and to perform tasks regularly can reduce human workload and improve efficiency. The timing task of a Linux system is controlled by a cron (Crond) system service. The Linux system already has a lot of planned work on it, so this system service is started by default. In addition, because the user can set the scheduled task themselves, the Linux system also p

The most common thing in Java is the timer timer in the Java API. In addition, there are also common thread-based and new API Scheduledexecutorservice interfaces that are provided from Java1.5. : Timer Timer Timer Introduction A timer is primarily used to perform a task on a regular basis. The common methods include Method Name Method Description Schedule (timertask task, Date time)

Copy Code code as follows: Package Com.yao; Import java.util.concurrent.Callable;Import java.util.concurrent.ExecutionException;Import Java.util.concurrent.ExecutorService;Import java.util.concurrent.Executors;Import Java.util.concurrent.Future;Import Java.util.concurrent.ScheduledExecutorService;Import Java.util.concurrent.TimeUnit; /*** New task execution architecture.* Starting a task before Java 5.0 is implemented by invoking the start () method of the thread class.* The delivery

when we start our computer Windows system, we inevitably encounter problems with software application conflicts, mainly because applications and services will automatically start running in the background, such as anti-virus software, system processes, and other software, etc. At this time use to perform a clean boot can effectively solve the problem of software conflict, different operating systems to perform