Several usually secondhand DOS commands

One, ping
It is used to check if the network or the network connection speed smooth command. As a network administrator alive in or hackers, ping command is the first must main the DOS command, using the rule that it is this: has the only machine on the network to make sure the IP address of the target we IP address to mail a parcel, the human would return the same size of a pouch, the packet based on the return we can resolve the presence of the target host,Asics Women's Gel Lyte III, you can determine the initial target host operating system. Here's a look at some of its general operations. Look to aid it in the DOS window, type: ping /? Enter, as shown in Figure 1 help screen. Here, we only have some basic parameters can be serviceable to the (same).

-t that will continuously send data packets to the target IP, until we compel it to stop. Imagine, if you use 100M broadband access, and the target IP is 56K feline, then Before long, the destination IP can not afford it because so much data and dropped calls, Oh, an attack on such a simple reality.
-l defines the size of packets sent,Asics Revolve LE, the default is 32 bytes, we can use it to define the maximum 65500 bytes. Described upon combined with the use of-t parameter,Asics Gel Nimbus, would be better oh.
-n define the IP to send packets to the target number, the default is 3. If the network is slow, 3 of us have consumed a lot of time, because our aim is only to determine whether there is target IP, then it is defined as a bar.
explain, if the-t parameter and the-n parameter together, ping command to be placed after the standard parameters, such as has been ping, but only ping 3 times. In appending, ping command does not must ping IP, can ping the host name, so you can get the host IP.
Here we give an sample to illustrate the specific use, as shown in Figure 2. Where time = 2 that sent the packet to receive from the return data packet the time spent is 2 seconds, from here you can determine the size of the network connection speed. The return amount from the TTL can ping the host to determine the initial operating system, say Here TTL = 32 that the operating system may be win98.

(Tip: If TTL = 128, then the target host may be Win2000; if TTL = 250, then the target host may be Unix)
The ping command can use to fast find local space network failures, you can quickly quest for the fastest QQ server can ping others to attack ... These human depend on their own play.
Two, nbtstat
the command using TCP / IP NetBIOS on display protocol statistics and current TCP / IP connection, use this command you can get the remote host's NETBIOS information such as user name, belongs to the working group, network card's MAC address. Here we have a need to know a few basic parameters.
-a use of this parameter, as long as you know the remote host machine name, you can obtain it NETBIOS information. Figure 3.
-A This parameter can also be a remote host NETBIOS information, but you need to know its IP.
-n lists the local machine NETBIOS information.

when the won their IP or machine name when you can use the nbtstat command to get further information on the other side, and this adds to our invasion of the insurance ingredient.
Three, netstat
This is a command used to view web status, easy and mighty.
-a view of all open ports on the local machine, you can mainly find and discourage Trojan horse, opening the machine to know the services and other information, as shown in Figure 4, where we can see that the local machine and beginning up FTP services, Telnet services, mail services , WEB services. Usage: netstat-a IP.

-r lists the current routing information, acquaint us the local machine doorway, subnet disguise, and other information. Usage: netstat-r IP.
Four, tracert
trace path information, use this command to find out the file transportation from the local machine to the target host all the path through, which we understand the network layout and architecture is helpful. Figure 5, where the specification of the data transmitted from the local machine to the 192.168.0.1 machine, without any intermediate transit, indicating that the two machines in the same period of the LAN. Usage: tracert IP.

Five, net
This command is a network command, the most important, it must be thoroughly mastered the method of every sub-command, because its function is too strong, this is simply Microsoft provides us with the best tools for the invasion. First, let's take a look at it all those sub-command, type net /? Enter as shown in Figure 6. Here, we focus on the baby to master a few common commands invasion.
net view

use this command to view the shared resources of remote hosts. Command format for the net view IP. Figure 7.

net use
the remote host to a local drive letter mapped to a shared resource, effortless to use graphical interface, Oh. The command format is net use x: IP sharename. Above that the 192.168.0.5IP a shared directory cried wizardry mapping for the local Z-disk. The following performance and the establishment of the IPC $ connection 192.168.0.7 (net use IP IPC $ The establishment of the IPC $ connection, Oh, you can upload files: copy nc.exe 192.168.0.7 admin $, that the local catalogue nc.exe approached the remote host, with the behind to be introduced to other DOS commands can be achieved invasion.

net start
use it to begin the service on a remote host. When you build a connection and the remote host, if that's what the service does not begin it, and how you want to use this service do? On the use of this command to start it. Usage: net start servername, as shown in Figure 9, the successful launch of the telnet

net stop
invasion and base a service out of the way the remote host, how do? use this command stopped ok, usage and net start the same.
net user
view and the account of the situation, including new accounts, delete accounts, view a specific account, activate the account, the account is maimed and so on. This is quite gainful to our invasion, and most importantly, it gives us the prelude account cloned. Type with no parameters, net user, you can view all users, including the already disability. The following were explained.

1, net user abcd 1234 / add, establish a user named abcd, the password for the 1234 account, the default for the user group members.
2, net user abcd / del, the user ambition cancel the user named abcd.
3, web user abcd, abcd outlook the user label of the user's situation, as shown in Figure 10.
4, net user abcd / active: no, the user named abcd user disabled.
5, net user abcd / active: yes, the user activates the user named abcd.
net localgroup
all relevant information and user groups and related actions. Type net localgroup without parameters namely lists always current user groups. The invasion process, we generally use it to upgrade to an list group as the administrator list, so namely we can use this list to control the all remote host. Usage: net localgroup groupname username / increase, as shown in Figure 11. Now we have fashionable users added to administrator group abcd worked, this time abcd user is super-administrator, Oh, you can then use the net user abcd to see his state, and Figure 10 can be seen comparing out. But this is too obvious, a look at the user network can be leakage of flaws, so this method can only handle with rookie network, but we must know. Means are immediately using other tools and manner to grant administrators to reproduce a super administrator can not see,Asics Women's Tokidoki Mex Lo, this is something. Friends who are amused can refer to

net time
this command to view the current time, remote host. If your goal is fair to enter inside to a remote host, then maybe less than this command. But the simple invasion success, do not fair see it? We need to further penetration. This is even the remote host needs to know the current time, for the use of time and other means (later) can program a command, and the timing started to arrange the basis for us to further invasion. Usage: net time IP. Figure 12.

Six, at
this command is to prepare a characteristic date alternatively time to implement a particular command and program (net time major to know, right?). When we know the current time, remote host, you can use this command so that in a afterward time (eg 2 minutes) the implementation of a program and command. Usage: at time command calculator. Figure 13, said in a 6:55 time-sharing, to name a-01 of the microprocessor is rotated on telnet service (here is the open net start telnet service telnet command).

Seven, ftp
everybody on this command should be extra familiar with it? network open ftp host a lot, much of it is nameless, meaning that anyone can sign up. Now if you had a sweep to open the ftp service on the host (commonly wharf 21 opened the machine), if you do not use the ftp command how to do? Here's the basic ftp commands are given to use.
first enter the command line, type ftp, ftp prompt appears, this time you can type We may look, so numerous commands how to use? Actually fewer than so much to main a few basic enough.

first landing process, which use to open up directly in the ftp prompt type Followed by enter a valid user name and password to login, and here for anonymous ftp as an example, as shown in Figure 15. User name and password are ftp, password is not displayed. When prompted **** logged in, it shows a successful landing. Log in here because it is anonymous, so the user is Anonymous.

afterward tread is to introduce the use of a specific command, as shown in Figure 16:

dir DOS command with the same document for viewing the server, buffet enter on the dir, you can see the files on the ftp server.
cd into a folder.
get to download files to your local machine.
put upload files to a remote server. That depends on whether the remote ftp server you can jot to the administration, and if you can, Oh, how the use is not to mention, we go on free play.
delete delete files on remote ftp waiter. It must too assure that you have writable permissions.
bye apt exit the current connection.
quit ibid.
Eight, telnet
powerful remote login command, about all of the invaders like to use it, and tested. Why? It is simple, favor using their own machines at a time you are familiar with DOS commands, as a successful administrator to interlock to a remote machine, you can use it to dry you wanted to do everything. Here's how to use the first type telnet Enter, then type help to see its help, as shown in Figure 17.

then in the remind, type open IP carriage return, then appeared the landing window, you enter a legal user name and password, whichever password entered here are not exhibited,Asics Olympos, as shown in Figure 18.

When you enter a user name and password are correct later the successful establishment of a telnet connection, this time you are aboard the remote host and the user has the same rights,Asics Women's Whizzer Lo, tin be accomplished using DOS commands you want to do things, as shown in Figure 19. Here I use the super commander prerogatives landing. Up to this, the introduction of DOS commands on the network came to an end, and here's intention is to give an impression beginner network, let the network kas long asfamiliar with DOS command and control can be achieved you ambition to do things, as shown in Figure 19. Here I use the super custodian privileges landing.

In addition we should be remove, no an wants to enter the system, must have a valid user name and password, even now you Nadao account for only a small authority, you can also use it to achieve the final goal. So firmly to exclude atmosphere password to their account with a muscular password, is the best method of barricade invasion feeble passwords.
article simply describes several commonly used network management network DOS command, hoping to start a debate. Finally, sincerely say: develop nice safety awareness is the most important.