I don't know that I am expecting anything from netstat -- If the output has something other than ESTABLISHED than that may point to other problems, Can you check the config on the Serial->Net plug and tell me what you have set for: Inactivity Timeout: and Inactivity Timer: under the Additl settings? Default is enabled This can cause the plug to drop connections after a timeout period -- and if it does not handle this properly can leave the port on the logging server side in one of the WAIT states that can make the port apear to be used but really is just partally connected.