Batch file to write to the services file

I need to but an exception into the services file which I need to roll out to every pc on my network. The port number is 2503/tcp I know that is has to be in order for it to work.  I would like to be able to write a batch file to do this.
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It is easiest through a GPO: edit the Computer Configuration\Administrative Templates\Network\Network Connections\Windows Firewall\Domain Profile - the Windows Firewall: Define port exceptions setting & set the exception to:

2503:TCP:*:enabled:<your description here>

As you've asked for a batch file, set up a .reg file and a batch file with:

regiedt.exe /s <full UNC path to .reg file>

With the .reg file having content as attached.
Windows Registry Editor Version 5.00
"2503:TCP:*:enabled:<your description>"="2503:TCP:*:enabled:<your description>"

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skdcsupportAuthor Commented:
I think I wasn't clear in what I need.

I need to edit the services file c:\windows\systems32\drivers\etc\services

I need to but an exception in of Eureka 2503/tcp

I have attached a screen shot of where I need the exception  

Ah, I see.  You could have a sample services file which your batch file simply copies across - this would ensure all of the machines have the same services configuration.  In terms of altering the file, the addition of the line is simple enough with a:

echo "eureka\t2053/tcp" >> %SYSTEMROOT%\system32\drivers\etc\services

Unfortunately, I can't help you with checking the file to see if it already exists in there. :(

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Errata: the "eureka\t2053/tcp" was meant to be explained: when you are creating the batch file, make sure you use a tab character instead of the "\t" after eureka. :)
skdcsupportAuthor Commented:
Thanks a lot worked a treat.
Good to hear, thanks for confirming. :)
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