Monitor a UDP port

Question

Hi,
I could find a solution for my problem. I need to monitor a UDP port.
For the TCP ports i'm using MP template TCP Port, but for the UDP i don't find any tool.
My question is. It's possible to monitor UPD ports in SCOM 2012 R2? If yes, how?
Thank you,
Rui 

Answer 1

Hi Rui,
I have found a possibility to do this. Hope you understand this and it is helpful. This is a two step process but guess will definitely server the purpose.
Scope: We will be running a tool which will monitor a port (TCP or UDP) for a specific host / IP and will throw a log file.
SCOM will monitor the log file and will throw a alert if the log file contains the string NOT LISTENING (Port not working or unable to open the port) which the program will create the log with the results.
First download the program named: PortQry Command Line Port Scanner Version 2.0 from microsoft using the below link. It is a command line tool.
http://www.microsoft.com/en-in/download/details.aspx?id=17148
Run it using by making a batch file or powershell script using task scheduler as per your time requirement (Every 5 min or 1Hr).
Use this command to monitor a ip / hostname and its port with TCP or UDP.
I have pasted the command file of the program in C:\Port_checker directory so i am using the below syntax
C:\Port_checker\PortQry.exe -N 192.168.1.1 -e 5723 -p UDP -l C:\Port_checker\Result.log /y
-N = Hostname / FQDN of agent or Ip address
-E = Port # what you want to monitor
-P = Protocol (TCP or UDP)
-L = Generate log on the following location and name
/Y = To replace the existing log file name to fresh one without prompt.
The result in the log file will be as follows:
============================
For successful port open:
PortQry Version 2.0 Log File
System Date: Tue Oct 07 09:42:32 2014
Command run:
 C:\PortQryV2\PortQry.exe -N 192.168.1.1 -e 5723 -p UDP -l C:\Portqryv2\Result.log /y
Local computer name:
 192.168.1.2
Querying target system called:
 192.168.1.1
Attempting to resolve name to IP address...
Name resolved to 192.168.1.1
querying...
UDP port 5723 (unknown service): LISTENING
========= end of log file ========= 
  PortQry developed by Tim Rains
For failure port open:
PortQry Version 2.0 Log File
System Date: Tue Oct 07 09:42:32 2014
Command run:
 C:\PortQryV2\PortQry.exe -N 192.168.1.1 -e 5723 -p UDP -l C:\Portqryv2\Result.log /y
Local computer name:
 192.168.1.2
Querying target system called:
 192.168.1.1
Attempting to resolve name to IP address...
Name resolved to 192.168.1.1
querying...
UDP port 5723 (unknown service): NOT LISTENING
========= end of log file ========= 
  PortQry developed by Tim Rains
Now as per the above results NOT LISTENING Port is blocked or is not opened and LISTENING
means working or port is opened.
So now using SCOM you will monitor the log file Result.log
in the location C:\Port_checker\ saying if NOT LISTENING
comes in the log file throw me a alert in SCOM consle or via email.
To configure that alert you need to create a Generic text log alerting Rule which will throw a alert if any thing added in that log which is not to be added and if it is added like NOT LISTENING
then it will throw a alert.
Refer this link on how to open a Generic text log alerting Rule.
http://blogs.technet.com/b/kevinholman/archive/2009/06/20/using-a-generic-text-log-rule-to-monitor-an-ascii-text-file-even-when-the-file-is-a-unc-path.aspx
Gautam.75801