I have used the Lantronix UDS1100 for Ethernet/RS232
bridging....maybe too pricey new, but available on ePay
The older models (LRS-1, LRS-2, UDS10, etc.) also work fine. If you have more than one
terminal, look at a small terminal server. There are a few terminal server models that go
for serious money (e.g. DECserver 700s, for some reason) but most of them cost more to
ship than to buy!
Thanks,
Jonathan