https://community.cisco.com/t5/network-security/blocking-ultrasurf-application/m-p/2888794#M1030852 <P>Hello,</P> <P>Please verify the Ultrasurf application version that you are trying to block.</P> <P>We have a known bug for the specific versions.</P> <P>Here is the bug details:-</P> <P>https://bst.cloudapps.cisco.com/bugsearch/bug/CSCze93202/?reffering_site=dumpcr</P> <P>Rate if this answer helps you.</P> <P>Regards</P> <P>Jetsy</P> <P></P> Mon, 09 May 2016 07:26:00 GMT Jetsy Mathew 2016-05-09T07:26:00Z https://community.cisco.com/t5/network-security/blocking-ultrasurf-application/m-p/2888793#M1030850 <P>Other competitor firewall is doing SSL inspection first then Access Rule Policy. When I tried by our ASA5506 with Firepower 6.0, creating SSL decryption with Internal CA, then applied that SSL Policy to Access Rule, unfortunately still it cannot be block. Our AMP for endpoint can successfully block Ultrasurf Apps.</P> Tue, 12 Mar 2019 13:00:27 GMT https://community.cisco.com/t5/network-security/blocking-ultrasurf-application/m-p/2888793#M1030850 jolape 2019-03-12T13:00:27Z https://community.cisco.com/t5/network-security/blocking-ultrasurf-application/m-p/2888794#M1030852 <P>Hello,</P> <P>Please verify the Ultrasurf application version that you are trying to block.</P> <P>We have a known bug for the specific versions.</P> <P>Here is the bug details:-</P> <P>https://bst.cloudapps.cisco.com/bugsearch/bug/CSCze93202/?reffering_site=dumpcr</P> <P>Rate if this answer helps you.</P> <P>Regards</P> <P>Jetsy</P> <P></P> Mon, 09 May 2016 07:26:00 GMT https://community.cisco.com/t5/network-security/blocking-ultrasurf-application/m-p/2888794#M1030852 Jetsy Mathew 2016-05-09T07:26:00Z