Often sought on the Internet, rarely complete, here is for a domain controller firewall ports to open so your Windows domain-controller is able to contact the other domain controllers it is depending on for proper replication UDP/123 for time synchronization, as in a domain by default the W32Time of a […]
In enterprise environments, non-Windows PKI solutions are not uncommon. Such as product is PKI from Verizon CyberTrust called UniCERT, or UniCERT PKI for short. Although the product delivers standard PKI features, like many Unix-Java based products it has many limitations when it comes to integration into the Windows world. […]
There is a lot of documentation about AD FS 3.0, the Active Directory Federation Services that comes with Windows 2012 R2. For example, this series of tutorials walks you through the different steps to build a lab. However almost all articles assume that you have a simple single domain forest […]
Need to have a process listening on some port to test your firewall rules? Instead of using a netcat or ncat, here’s a very simple Powershell implementation of this ncat/netcat feature:
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function Wait-OnPort ($port) { $endpoint = new-object System.Net.IPEndPoint ([ipaddress]::any, $port) $listener = new-object System.Net.Sockets.TcpListener $endpoint $listener.start() $listener.AcceptTcpClient() # wait until somebody connect $listener.stop() } |
If you need a TCP Client, the code is very straightforward:
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$t = New-Object System.Net.Sockets.TcpClient("servernameorIPAddress",port) #port is not open, you get an exception New-Object : Exception calling ".ctor" with "2" argument(s): "No connection could be made because the target machine actively refused it 10.254.212.81:666" At line:1 char:16 + $t = New-Object <<<< System.Net.Sockets.TcpClient("servernameorIPAddress",port) + CategoryInfo : InvalidOperation: (:) [New-Object], MethodInvocationException + FullyQualifiedErrorId : ConstructorInvokedThrowException,Microsoft.PowerShell.Commands.NewObjectCommand #port is open, you get nothing $t.Close() |
Often sought on the Internet, rarely complete, here is for member server firewall ports to open for your Windows domain-joined or soon-to-be-joined machine to be able to contact the domain controllers it is depending on: UDP/123 for time synchronization, as in a domain by default the W32Time of a member […]
