NetBIOS command

-: NetBIOS command :-

NetBIOS stands for "Network Basic Input Output System".
It was originally developed by IBM and Sytek as an Application Programming Interface (API) for client software to access LAN resources.
By default it runs on port 139.
NetBIOS gives the various information of the computers on a network, which includes computer name, username, domain, group, and many others.....!

The NBTSTAT Command :-
NBTSTAT is the command for manually interact with NetBIOS Over TCP/IP.
All the attributes (switches) used with nbtstat command and their usage can be viewed.
At the command prompt type-
C:\Windows>nbtstat


Sample NBTSTAT Response :-
C:\>nbtstat -A 117.200.160.174

NetBIOS Remote Machine Name Table
Name Type Status
----------------------------------------------
PRASANNA <00> UNIQUE Registered
INSECURE LABS <00> GROUP Registered
PRASANNA <03> UNIQUE Registered
PRASANNA <20> UNIQUE Registered
INSECURE LABS <1e> GROUP Registered

MAC Address = 86-95-55-50-00-00

An intruder could use the output from an nbtstat against your machines to begin gathering information about them.

"<03> in above table is nothing but the username of that system."

The next step for an intruder would be to try and list the open shares on the given computer, using the net view command.
Here is an example of the Net View command-
C:\>net view \\117.200.160.174
Shared resources at \\117.200.160.174
Sharename Type Comment
----------------------------------------
C Disk Drive C:\
MySofts Disk My Softwares Collection
E Disk Drive E:\

The command was completed successfully.


This information would give the intruder a list of shares which he would then use in conjunction with the Net Use command, a command used to enable a computer to map a share to it’s local drive, below is an example of how an intruder would map the C Share to a local G: drive, which he could then browse...!
C:\>net use G: \\117.200.160.174\C
The command was completed successfully.

C:\>G:

G:\>

PING command

Ping [-t] [-a] [-n count] [-l size] [-f] [-i TTL] [-v TOS]
[-r count] [-s count] [[-j host-list] | [-k host-list]]
[-w timeout] destination-list
Options:
-t Pings the specified host until stopped.
To see statistics and continue - type Control-Break;
To stop - press Ctrl + C.
-a Resolve addresses to hostnames.
-n count Number of echo requests to send.
-l size Send buffer size.
-f Set Don't Fragment flag in packet.
-i TTL Time To Live.
-v TOS Type Of Service.
-r count Record route for count hops.
-s count Timestamp for count hops.
-j host-list Loose source route along host-list.
-k host-list Strict source route along host-list.
-w timeout Timeout in milliseconds to wait for each re



Examples
ping localhost
Pings the local host, this will allow you to see if the computer is able to send information out and receive the information back. Note that this does not send information over a network but may allow you to see if the card is being seen.
ping xxx.xxx.xxx.xxx
Allows you to ping another computer where the x's are located are where you would place the IP address of the computer you are attempting to ping. If this is not able to complete, this should relay back an unsuccessful message, which could be an indication of cable issues, network card issues, hub issue, etc.


Additional information
Is there a continuous ping options?
ping

-t
Use the -t option to ping any address until you cancel it by pressing Ctrl + C.

A MS-DOS External command

command that is not included in command.com. External commands are commonly external either because they require large requirements or are not commonly used commands. Below are examples of MS-DOS external commands currently listed in the minhazur network database. 

Append Arp Assign At Attrib Backup Cacls Chcp Chkdsk Chkntfs Choice Cipher Comp Compact Convert Debug Defrag Delpart Deltree Diskcomp Diskcopy Doskey Dosshell Dumpchk Edit Edlin Expand Extract

Fasthelp Fc Fdisk Find Format FTP Gpupdate Graftabl Help Hostname Ipconfig Label Loadfix logoff Mem Mode More Msav Msbackup Mscdex Mscdexnt Mwbackup Msd Nbtstat Net Netsh Netstat Nlsfunc Nslookup

Pathping Ping Power Print Reg Route Runas Scandisk Scanreg Setver Sfc Share Shutdown Smartdrv Sort Subst Sys Systeminfo

Taskkill Telnet Tracert Tree Undelete Unformat Xcopy