Hola
Forum instructions:
https://www-secure.symantec.com/connect/forums/how-block-applications-sep-using-md5
https://www-secure.symantec.com/connect/articles/most-detailed-way-block-ultrasurf
Symantec article:
http://service1.symantec.com/SUPPORT/ent-security.nsf/2326c6a13572aeb788257363002b62aa/7049d06ba3c9e86f802573620054d9c2?OpenDocument