Is it possible to use a SLIP emulator like TIA or TWinsock with Serv-U?
SLIP/PPP Emulators If you are using a so called ‘SLIP emulator’ like TIA, TWinsock, or Pipeline, there are also a number of things to keep in mind. These emulators are not real Internet connections, and because of the way they have to do their work they have a number of peculiarities. Since the PC has to share the IP number with the host system you will generally not be able to use the default port 21 for Serv-U. Instead, you either have to use a high port number (generally above 8000) or set up ‘port redirection’. Ask you Internet provider for details about the latter. A related problem is that the IP number displayed by Serv-U is not the IP number that clients should use to contact your server. It is merely a dummy to keep the socket stack of the PC happy. For the outside world the IP number of your server is the same as that of the emulator host system, i.e. that of your Internet provider. Another special effect is that clients will not be able to use ‘passive’ mode for data transfe
