http方式连接不上ssas

[Timsole]

服务器环境：win2008 server ,sqlserver 2008r2
防火墙上已开通入站本地TCP端口2382

配置好IIS以后，通过http方式http://ip/olap/msmdpump.dll会提示msmdpump.dll文件的下载；
SQL Server Management Studio通过http地址连接 analysis service报错,提示信息如下：

Cannot connect to http://10.82.129.201/olap/msmdpump.dll.
ADDITIONAL INFORMATION:

The connection either timed out or was lost. (Microsoft.AnalysisServices.AdomdClient)

------------------------------

远程服务器返回错误: (405) 不允许的方法。 (System)

------------------------------