Saturday, June 20, 2020

Finding where a user is logging on from

For years I’ve been using a doskey macro I created to Find a User.

In an enterprise environment, the logic is:

  • Every normal user account has their home server mapped automatically, establishing a persistent SMB session with the home server from their workstation 
  • Find the home server and query it to find the where the user is connecting from 
  • Resolve the address and report who is connecting from where.

A few limitations:

  1. This will only work if the home server is a Windows box 
  2. You will need permissions to query win32_serversession of the home remotely (typically admin) 
  3. If the person is connecting over Citrix or DirectAccess or another jump box, it will resolve to that source, instead of (or sometimes as well as) a workstation.

A quick PowerShell equivalent (with zero error checking):

function Find-User ($username) {
  $homeserver = ((get-aduser -id $username -prop homedirectory).Homedirectory -split "\\")[2]
  $query = "SELECT UserName,ComputerName,ActiveTime,IdleTime from win32_serversession WHERE UserName like '$username'"
  $results = Get-WmiObject -Namespace root\cimv2 -computer $homeServer -Query $query | Select UserName,ComputerName,ActiveTime,IdleTime
  foreach ($result in $results) {
    $hostname = ""
    $hostname = []::GetHostEntry($result.ComputerName).hostname
    $result | Add-Member -Type NoteProperty -Name HostName -Value $hostname -force
    $result | Add-Member -Type NoteProperty -Name HomeServer -Value $homeServer -force

# Find one or more users
$users = "user1", "user2", "user3"
$users | % {Find-User $_} | ft -wrap -auto

# Find the members of a group
get-adgroupmember -id SG-Group1 | % {Find-User $_.samaccountname} | ft -wrap -auto

The original (and still the best) doskey macro:

FU=for %g in ($1 $2 $3 $4 $5 $6 $7 $8 $9) do @for /f "tokens=2 delims=\" %i in ('"dsquery user -samid %g | dsget user -hmdir | find /i "%g""') do @for /f "skip=1 tokens=1-3" %m in ('"wmic /node:"%i" path win32_serversession WHERE "UserName Like '%g'" Get ComputerName,ActiveTime,IdleTime"') do @for /f "tokens=2" %q in ('"ping -a %n -n 1 | find /i "pinging""') do @echo %q %g %n %i %m %o

Create the macro above with doskey:

doskey /listsize=1000 /macrofile=c:\util\macros.txt
FU user1

Wayne's World of IT (WWoIT). 

No comments:

All Posts

printQueue AD objects for 2003 ClusterVirtualCenter Physical to VirtualVirtual 2003 MSCS Cluster in ESX VI3
Finding duplicate DNS recordsCommand-line automation – Echo and macrosCommand-line automation – set
Command-line automation - errorlevels and ifCommand-line automation - find and findstrBuilding blocks of command-line automation - FOR
Useful PowerShell command-line operationsMSCS 2003 Cluster Virtual Server ComponentsServer-side process for simple file access
OpsMgr 2007 performance script - VMware datastores...Enumerating URLs in Internet ExplorerNTLM Trusts between 2003 and NT4
2003 Servers with Hibernation enabledReading Shortcuts with PowerShell and VBSModifying DLL Resources
Automatically mapping printersSimple string encryption with PowerShellUseful NTFS and security command-line operations
Useful Windows Printer command-line operationsUseful Windows MSCS Cluster command-line operation...Useful VMware ESX and VC command-line operations
Useful general command-line operationsUseful DNS, DHCP and WINS command-line operationsUseful Active Directory command-line operations
Useful command-linesCreating secedit templates with PowerShellFixing Permissions with NTFS intra-volume moves
Converting filetime with vbs and PowerShellDifference between bat and cmdReplica Domain for Authentication
Troubleshooting Windows PrintingRenaming a user account in ADOpsMgr 2007 Reports - Sorting, Filtering, Charting...
WMIC XSL CSV output formattingEnumerating File Server ResourcesWMIC Custom Alias and Format
AD site discoveryPassing Parameters between OpsMgr and SSRSAnalyzing Windows Kernel Dumps
Process list with command-line argumentsOpsMgr 2007 Customized Reporting - SQL QueriesPreventing accidental NTFS data moves
FSRM and NTFS Quotas in 2003 R2PowerShell Deleting NTFS Alternate Data StreamsNTFS links - reparse, symbolic, hard, junction
IE Warnings when files are executedPowerShell Low-level keyboard hookCross-forest authentication and GP processing
Deleting Invalid SMS 2003 Distribution PointsCross-forest authentication and site synchronizati...Determining AD attribute replication
AD Security vs Distribution GroupsTroubleshooting cross-forest trust secure channels...RIS cross-domain access
Large SMS Web Reports return Error 500Troubleshooting SMS 2003 MP and SLPRemotely determine physical memory
VMware SDK with PowershellSpinning Excel Pie ChartPoke-Info PowerShell script
Reading web content with PowerShellAutomated Cluster File Security and PurgingManaging printers at the command-line
File System Filters and minifiltersOpsMgr 2007 SSRS Reports using SQL 2005 XMLAccess Based Enumeration in 2003 and MSCS
Find VM snapshots in ESX/VCComparing MSCS/VMware/DFS File & PrintModifying Exchange mailbox permissions
Nested 'for /f' catch-allPowerShell FindFirstFileW bypassing MAX_PATHRunning PowerSell Scripts from ASP.Net
Binary <-> Hex String files with PowershellOpsMgr 2007 Current Performance InstancesImpersonating a user without passwords
Running a process in the secure winlogon desktopShadow an XP Terminal Services sessionFind where a user is logged on from
Active Directory _msdcs DNS zonesUnlocking XP/2003 without passwords2003 Cluster-enabled scheduled tasks
Purging aged files from the filesystemFinding customised ADM templates in ADDomain local security groups for cross-forest secu...
Account Management eventlog auditingVMware cluster/Virtual Center StatisticsRunning scheduled tasks as a non-administrator
Audit Windows 2003 print server usageActive Directory DiagnosticsViewing NTFS information with nfi and diskedit
Performance Tuning for 2003 File ServersChecking ESX/VC VMs for snapshotsShowing non-persistent devices in device manager
Implementing an MSCS 2003 server clusterFinding users on a subnetWMI filter for subnet filtered Group Policy
Testing DNS records for scavengingRefreshing Computer Account AD Group MembershipTesting Network Ports from Windows
Using Recovery Console with RISPAE Boot.ini Switch for DEP or 4GB+ memoryUsing 32-bit COM objects on x64 platforms
Active Directory Organizational Unit (OU) DesignTroubleshooting computer accounts in an Active Dir...260+ character MAX_PATH limitations in filenames
Create or modify a security template for NTFS perm...Find where a user is connecting from through WMISDDL syntax in secedit security templates

About Me

I’ve worked in IT for over 20 years, and I know just about enough to realise that I don’t know very much.