tokens: ['with', 'HTTP', 'CONNECT', 'use', 'port', '', 'or', '', 'and', 'look', 'like', 'HTTPHTTPS', 'The', 'high', 'level', 'coverage', 'and', 'overlap', 'of', 'FSFIRE', 'and', 'SMURF', 'is', 'shown', 'in', 'Figure', '', '', 'Figure', '', 'FSFIRE', 'and', 'SMURF', 'overview', 'and', 'overlap', 'While', 'an', 'FSFIRE', 'solution', 'may', 'or', 'may', 'not', 'fulfill', 'the', 'SMURF', 'requirements', 'a', 'solution', 'fulfilling', 'the', 'SMURF', 'requirements', 'also', 'fulfills', 'the', 'FSFIRE', 'requirements', 'at', 'least', 'for', 'GPP', 'UEs', 'The', 'possible', 'outcomes', 'from', 'the', 'FSFIRESMURF', 'work', 'items', 'are', 'FSFIRE', 'and', 'SMURF', 'are', 'specified', 'independently', 'and', 'therefore', 'overlap', 'when', 'it', 'comes', 'to', 'IMS', 'services', 'for', 'GPP', 'UEs', 'The', 'SMURF', 'solution', 'is', 'used', 'by', 'GPP', 'UEs', 'to', 'access', 'all', 'services', 'both', 'IMS', 'and', 'nonIMS', 'FSFIRE', 'is', 'focused', 'to', 'solve', 'the', 'firewall', 'traversal', 'problem', 'for', 'fixed', 'IMS', 'UEs', 'accessing', 'IMS', 'services', 'From', 'the', 'analysis', 'it', 'is', 'clear', 'that', 'the', 'work', 'items', 'are', 'largely', 'overlapping', 'In', 'general', 'overlapping', 'solutions', 'should', 'be', 'avoided', 'as', 'this', 'increases', 'both', 'the', 'work', 'effort', 'and', 'the', 'complexity', 'FSFIRE', 'and', 'SMURF', 'should', 'therefore', 'be', 'studied', 'together', 'However', 'it']