Case Number: 03386619 Product: SNWL NSA 2400 ENGLISH DEMO NFR Firmware Version: 18.104.22.168
When Skype is enabled (set to block) via application Firewall policies, it also drops https traffic towards webservers with Signature ID 2 under Firewall log and under packet monitor as IDP detection.
Skype Network Discovery, SID: 2 signatrue is an old signature and no longer required to block Skype.
Skype Network Discovery, SID: 2 signatrue:
Step 1: Navigate to Firewall | App control advanced. Step 2: Type 2 next to "Lookup Signature ID:" text box and click on the magnifier icon and wait for the a window to pop up. Step 3: From the Edit App Control Signatrue displayed window, select disable from the drop down list next to Block and Log to disable this signature.
In order to block Skype new signatures has been added: