Network troubleshooting commands for Windows

PROBLEM DESCRIPTION
I need a list of common Windows commands to help me troubleshoot Websense in my network.
RESOLUTION
The Windows troubleshooting commands discussed in this document fall into three categories:
Determine which groups a user belongs
Helpful commands entered from the Start > Run dialog box
Comman-line tools for troubleshooting network connectivity

Determine which groups a user belongs
To generate a list of groups that a user belongs, open a command prompt and enter the following commands:
net user /domain
Replace with an actual user name. For example:
net user jdoe /domain


Helpful commands entered from the Start > Run dialog box
Select Start > Run to execute any of the following commands.

User-added image


mstsc Opens the Remote Desktop (RDP) tool
winmsd Opens the System Information dialog box
inetcpl.cpil Opens the Internet Explorer Properties dialog box
odbccp32.cpl Opens the ODBC Data Source Administrator
mmc Opens the Microsoft Management Console (MMC)
services.msc Opens the Windows Services dialog box
eventvwr.msc Opens the Windows Event Viewer
dsa.msc Opens the Active Directory User and Computers management console
dssite.msc Opens the Active Directory Sites and Services management console
adminpak.msi Launches the Administration Tools Pack installer
dxdiag Opens the DirectX Diagnostic Tool
\\< Name or IP>\C$ Opens a UNC to the C: share
cmd Opens the Windows Command Prompt using the 32-bit cmd shell


Command-line tools for troubleshooting network connectivity
This list contains some common commands for troubleshooting network connectivity. Select Start > Run and then type cmd to access the appropriate command prompt. Activating a command window via Start > Programs > Accessories does not allow all of the following tools to run correctly.

User-added image



arp -a Shows gateway MAC address.
gpresult Starts the Operating System Group Policy Result tool
ipconfig /all Displays the full TCP/IP configuration for all adapters
ipconfig /flushdns Flushes the DNS resolver cache. Helpful when troubleshooting DNS name resolution problems
nbtstat -a Obtains info from WINS or LMHOST (discovers who is logged on)
nbtstst -A Gets info from WINS or LMHOST (discovers who is logged on)
nbtstat -R Purges and reloads the remote cache name table
nbtstat -n Lists local NetBIOS names.
nbtstat -r Useful for detecting errors when browsing WINS or NetBIOS
netstat -ab The b switch links each used port with its application
netstat -an Shows open ports
netstat -an 1 | find "15868" Locates only lines with the number 15868 and redisplays every one second
netstat -an | find "LISTENING" Shows open ports with LISTENING status
net use Retrieves a list of network connections
net use file://1.2.3.4/ Sees if the machine can poll IP 1.2.3.4
net user Shows user account for the computer
net user /domain Displays user accounts for the domain
net user /domain Shows account details for specific user
net group /domain Shows group accounts for the domain
net view Displays domains in the network
net view /domain Specifies computers available in a specific domain
net view /domain: | more Shows user accounts from specific domain
net view /cache Shows workstation names
nslookup Looks up IP/hostnames and displays information helpful in diagnosing DNS issues
ping -a Resolves IP to Hostname
ping -t Pings host until stopped
set U Shows which user is logged on
set L Shows the logon server
telnet Confirms whether the port is open
net use %LOGONSERVER%
Use this command to hit the Domain Controller resulting in DC Agent picking up the user name you logged onto the server with. An example of the command follows:
net use \\

NOTES & WARNINGS
NOTE Some commands may output more data then the default command window can show. To view the complete data, use the pipe command ( > or | ) to direct the output to a file. For example, type net user \domain > GroupOutPut.txt to create a text file called GroupOutPut.txt that contains the output data.
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