I need to get data from a serial device (a weather station) over our network where it'll be processed by a Unix host (using custom software). I was able to compile remserial which makes the remote serial device act like a tty. Remserial was designed for Linux but should work on OS X (which I'm using) and FreeBSD.
What is not clear to me, though, is if a serial-to-ethernet adapter or serial server uses some sort of standard protocol for how it communicates via a network socket, or if every brand is different. More to the point, can I buy any serial-to-ethernet adapter and expect remserial to work with it, and if not, are there any you'd recommend (or other pieces of software glue I should consider)?