Disabling Telnet

Question

Question

Anzelem Sanyatwe · Feb 19, 2020

#Microsoft Windows #Terminal #Caché

Good Day;

looking at disabling Telnet - on Windows - Cache 2012,2017. The security scans don't need it on network.

But still leave users able to use `Terminal - direct - on the box should be fine.

am posting here for quick refs (as this is a common security vulnerability out there).

Regards;

Anzelem.

Discussion (5)1

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Alexander Koblov · Feb 19, 2020

Hi Anzelem.

If that is the question on how you can disable telnet -- then you should disable service %Service_Telnet in System Administration > Security > Services.

https://cedocs.intersystems.com/ens201813/csp/docbook/DocBook.UI.Page.cl...

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score 0 · Answer 1 · 2020-02-19T03:51:19-05:00

Thanks Alex, i did a netstat -anb > openports.txt before and after.

So other than disabling in CACHE, there are no traces at Windows OS level? Any setting related to Telnet that was opened/configured at OS level, when Cache was installed/started?

Regards;

Anzelem.

score 0 · Answer 2 · 2020-02-19T04:01:47-05:00

No other settings.

What %Service_Telnet does is it starts/stops process that listens on port 23 (by default). If you disable this service than process is stopped, so nothing from Caché side is listening on port 23.

score 1 · Answer 3 · 2020-02-19T14:14:27-05:00

Anzelem Sanyatwe · Feb 19, 2020

Thanks Alex, i got it and configured the way i envisaged.

Regards;

Anzelem.

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score 0 · Answer 4 · 2020-03-19T10:00:06-04:00

Depending on your version of Windows, there might be a Windows Telnet service, which you would want to disable using Windows tools.