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Skype false positive
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08-21-2013 11:44 PM
Hello guys,
About skype: how to know, when users realy use skype and when PA detects only false positive? Because now i have lot of log with "secure.skype.com" URL and PA detects it as skype application.. I would be grateful for an explanation.
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08-23-2013 04:11 AM
Explanation:
if the webpage contains a java script "detection_as3.swf", wich redirects to webpage "https://secure.skype.com", PA firewall this connection consider as a "skype" application. Case closed.
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08-22-2013 12:31 AM
Hi Ignas,
Users are using any other video/audio calling application into their machine...? Please follow below mentioned documents for more information about SKYPE.
Also I would recommend you to open a case with support.
Thanks
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08-22-2013 02:07 AM
Skype not installed on users' computers. We checked this. But PA detects skype application. Detailed log shows "secure.skype.com" URL.
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08-22-2013 02:13 AM
Could be a false positive. Is the firewall on the latest dynamic updates ?
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08-22-2013 02:56 AM
Hi
The URL log as below is generated by accessing to secure.skype.com from IE10.
Do you mean you can't figure out this is actual skype session or just https session from browser?
If my understanding is correct, I guess there is no clue to figure out which pattern is it because the session is encrypted by ssl and PaloAlto device could not see the payload.
However, skype client send out skype-probe session, if you can see skype and skype-probe from one source address, you might be able to say that user is using skype client.
Regards
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