Close the 135 port under widower 2008: First, the 135 port under Windows system is mainly used to use RPC (Remote Procedure Call) protocol and provide DCOM (Distributed Component Object Model) service, which can ensure that the program running on one computer can successfully execute the code on the remote computer; Using DCOM, we can communicate directly through the network and transmit across various networks including HTTP protocol. Port vulnerability: I believe that many users who used Windows 2000/Windows XP and Windows 2008 were infected with the "Shockwave" virus last year, which used RPC vulnerabilities to attack computers. There are loopholes in RPC itself when dealing with message exchange through TCP/IP, which is caused by improper handling of messages with incorrect format. This vulnerability will affect the interface between RPC and DCOM, which listens on port 135. Operation suggestion: In order to avoid the attack and destruction of the above-mentioned "shock wave" virus, it is recommended that you close the port. 1. Click Start-Run, enter dcomcnfg, and click OK to open the component service. 2. In the Component Services dialog box that pops up, select the Computer option. Third, on the right side of the "Computer" option, right-click "My Computer" and select "Properties". 4. In the Default Properties tab of the My Computer Properties dialog box that appears, uncheck Enable Distributed COM on this computer. 5. Select the Default Protocol tab, select connection-oriented TCP/IP, and then click Delete. 6. Click "OK" button to complete the setting. After restarting, you can close the port 135.