How to block Teamviewer using Application Filter

Question

Hi, 
 i try to block Teamviewer applying a specific application filter to my LanToWan rule. 
 I select Teamviewer Conferencing and Teamviewer File Transfer as Application filter criteria. 
 Team Viewer is still working. 
 I check the patterns which are all updated. 
 Searching in Sophos Community i didn't find any indication which can help me. 
 Can someone show to me how can i block Teamviewer? 
 Thank you in advance

Supporto Tecnico1 · Answer

Hi Ian, 
 i find the solutiion visiting the community portal, under this Knowledge Base page: https://community.sophos.com/kb/en-us/123078 
 In the past days i tried to use a logical way of thinking. I have a lan to wan rule and i applied to it the app filter i create. I thought this was the logical way to use the block of applications. 
 The KB i found explain the way is to add a new firewall rule, in which you need to accept and don't deny the use of the application filter. I create this new rule and i give to it the top position. Then i add the filter and i was able to block Teamviewer in my LAN. 
 In this way all my traffic was blocked. So i push the rule at the last position of my rules group and the game is done. 
 Sophos Knowledge Base is a good way to find solutions. Just one suggest for the editorial staff. For me the Community homepage is not friendly and doesn't give access immeditaely to these good informations. 
 Thank you for your help 
 Claudio