(1. Block IPC empty connection 2. Block At command 3. Disable HyperTerminal service 4. Disable SSDPDiscoverService service 5. Disable RemoteRegistry service 6. Disable NetBIOS over TCP/IP7. Disable DCOM service 8. Change the permissions of shared files from "everyone" "group changed to "authorized users" 9, revoke other unnecessary services 10, change the TTL value 11, account security 12, revoke the display of the last logged in user 13, delete the default share 14, disable LanManager authentication)