Business requirements: the project need to internal and external web server for file synchronization, due to the information security cannot be accessed via IP, open only the specified port Problem: use the default port 875 can be synchronized, but after modify the configuration file specified port, the client is not an error but no response; The configuration file: Use chroot=false Strict modes=false Hosts allow=* Max connections=10 Port=135 Motd file=rsyncd. Motd The log file=rsyncd. Log The pid file=rsyncd. Pid Transfer logging=yes [test] Path=/cygdrive/d/test Read only=false Transfer logging=yes Read only=yes The list=no Hosts allow=192.168.31.46 Hosts deny=* Uid=0 Gid=0 Lock the file=rsyncd. Lock