ActiveXperts Network Monitor ships with a powerful set of pre-defined checks. Each individual check has a static number of configuration items. To monitor other items, or to combine monitoring items, you can make use of custom PowerShell checks.
Most of the built-in checks have a PowerShell equivalent, implemented as a PowerShell (.ps1) script file. Out-of-the-box, each PowerShell script monitors the same items as the built-in check. Feel free to modify the script.
To add a new PowerShell-based Database monitoring check, do the following:
- On the 'Monitor menu', open 'New Monitoring Check (Script)' and choose 'New PowerShell Check'. The 'PowerShell Check' dialog box appears;
- In the 'Script File' selection box, select 'Telnet.ps1';
- In the 'Script Parameters'group box enter the required parameters. You can also load a working sample first by clicking on the 'Click here to load a sample' link.
To customize the above monitoring check, click on the 'Edit button' next to the 'Script File' selection box. Notepad will be launched. You can now make changes to the PowerShell script.
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Telnet.ps1 script source code
################################################################################# # ActiveXperts Network Monitor PowerShell script, (c) ActiveXperts Software B.V. # For more information about ActiveXperts Network Monitor, visit the ActiveXperts # Network Monitor web site at https://www.activexperts.com ################################################################################# # Script # Telnet.ps1 # Description: # Establish a telnet session to a POP3 mail server and validate its response # POP3 servers always reply a #+OK# message when ready to establish a session # This function uses the ActiveXperts Network Component, an ActiveXperts product. # ActiveXperts Network Component is automatically licensed when ActiveXperts # Network Monitor is purchased # For more information about ActiveXperts Network Component, see: # www.activexperts.com/network-component # Parameters: # 1) strServer - a telnet server to connect to # 2) numPort - the port to connect to # 3) strCommand1 - the first command to send to the telnet server # 4) strCommand2 - the second command to send to the telnet server # 4) strCommand3 - the third command to send to the telnet server # 5) strReceive - the string you should receive # Usage: # .\Telnet.ps1 '<Hostname | IP>' Port 'Command1' 'Command2' 'Command3' 'Receive string' # Sample: # .\Telnet.ps1 'telnet.activexperts-labs.com' 23 'library' 'mypasswd' '' 'Search your library' ################################################################################# # Parameters param ( [string]$strServer, [int]$numPort, [string]$strCommand1, [string]$strCommand2, [string]$strCommand3, [string]$strReceive ) # Check parameters input if ( ( [string]$strServer -eq "" ) -or ( [int]$numPort -eq "" ) -or ( [string]$strCommand1 -eq $null ) -or ( [string]$strCommand2 -eq $null ) -or ( [string]$strCommand3 -eq $null ) -or ( [string]$strReceive -eq "" ) ) { $res = "UNCERTAIN: Invalid number of parameters - Usage: .\Telnet.ps1 <Hostname | IP> <Port> <Command1> <Command2> <Command3> <Receive string>" echo $res exit } cls ################################################################################# # Functions ################################################################################# ################################################################################# function tcprecv { param ( [ref]$strAllRespons ) $strResponse = $null $bHasData = $null $bHasData = $objTcp.HasData() while ( $bHasData ) { $strResponse = $objTcp.ReceiveString() $bHasData = $objTcp.HasData() if ( $strAllRespons.Value -ne "" ) { #.. to indicate a newline $strAllRespons.Value = $strAllRespons.Value + "`n`r" } $strAllRespons.Value = $strAllRespons.Value + $strResponse } } ################################################################################# function tcpsend { param ( [ref]$strCommand ) if ( $strCommand.Value -ne "" ) { $objTcp.SendString( $strCommand.Value ) } } ################################################################################# # THE SCRIPT ITSELF ################################################################################# # Define variables $strAllResponses = "" # Create object $objTcp = new-object -comobject ActiveXperts.Tcp # 1 means: raw, 2 means: telnet (see also ActiveXperts Network Component manual) $objTcp.Protocol = 2 $objTcp.Connect( $strServer, $numPort ) if ( ($objTcp.LastError -ne 0 ) -or ( $objTcp.ConnectionState -ne 3 ) ) { return "UNCERTAIN: Unable to connect to [" + $strServer + "]" # can be called even when there's no connection $objTcp.Disconnect() exit } #write-host $objTcp.HasData() $objTcp.Sleep( 2000 ) # Allow some time tcprecv( [ref]$strAllResponses ) tcpsend( [ref]$strCommand1 ) tcprecv( [ref]$strAllResponses ) tcpsend( [ref]$strCommand2 ) tcprecv( [ref]$strAllResponses ) tcpsend( [ref]$strCommand3 ) tcprecv( [ref]$strAllResponses ) #write-host $strAllResponses # Checks values if ( ($strAllResponses -ne $null ) -or ( $strAllResponses -eq "" ) ) { if( ($strAllResponses.ToUpper()) -match ($strReceive.ToUpper()) -eq $true ) { $res = "SUCCESS: String <" + $strReceive + "> found DATA: 1" } else { $res = "ERROR: String <" + $strReceive + "> not found DATA: 0" } } else { $res = "UNCERTAIN: No data received" } #cls Write-Host $res $objTcp.Disconnect() exit