Instead of looking for a tool, there is a very quick and easy way that lets me ping a wild range of IPs to find out which IPs are free and which ones have been taken, using the PowerShell built-in cmdlet Test-Connection. And here is how: $iprange = 200..254 Foreach ($ip in $iprange) { $computer = “192.168.37.$ip” $status = Test-Connection […]
When querying a PowerShell object, it only returns a few essential properties by default. For example, querying the W32_ComputerSystem class with Get-WmiObject cmdlet only returns properties like Manufacturer, ComputerName, TotalPhysicalMemory, etc. To get the full list of the properties of Win32_ComputerSystem class, you can pipe the result to Format-List, like below. Get-WmiObject -Class “Win32_ComputerSystem” | Format-List * You can even […]
Have you ever seen the timestamp format like this and wondered how it’s equivalent to the normal DateTime format? It’s the date/time value stored in Active Directory as the number of 100-nanosecond intervals that have elapsed since the 0 hours on January 1, 1601, until the date/time that is being stored. It’s always in UTC (Coordinated Universal Time, aka. GMT) […]
The wildcard SSL certificate is expiring in a few weeks. It’s time to get it renewed for both website and the Gateway server for remote access. I renewed the certificate on Namecheap, regenerated the CSR file and got the digitally signed certificate file in a few minutes. Since the digital certificate was generated for the website hosted on Apache, I […]
When retrieving data from the event log, there is a set of data stored in a data field called ReplacementStrings that is very useful to the certain types of log entries. It’s structured as a string array, therefore, can be retrieved if you know the data structure. The problem is, every type of event ID has different string array structure. […]
If a user account gets locked out, I can follow these tips to find out why and when it happened. But how can I check and gather lockout info along with the bad password attempts info of all users across the entire AD domain? Asking help from PowerShell is my answer. There are two places where we can gather this […]
To get the IP addresses of the remote desktop sessions behind a Remote Desktop Gateway, you need to open RD Gateway Manager, go to Monitoring section and check each of the connected sessions to find their IP addresses. If you want to look further for their geolocations as well, you would search the IP address in one of the geolocation […]
Reset the local admin password the other day and I needed to find out all services that rely on the local admin account to run so no interruption would happen after the reboot. Obviously, the easiest way to find out is using PowerShell. But how? I first tried the Get-Service cmdlet but found that it doesn’t return the value for […]