On Wed, Mar 10, 2010 at 15:17:53PM -0500, Michael Holstein wrote:
Can anyone recommend a cheap Ethernet to Serial (RS232/422/485) converter with functionality like the Lantronix boxes .. except one that supports access lists (nothing complicated .. maybe a list of 5 approved hosts). I need a bunch of single port devices, not an access-server for a rack.
I could build one out of a Pogoplug + USB/serial dongle .. (~$120 total) but would rather not re-invent the wheel.
All the "secure" ones I see involve encrypting com port redirectors for the host PC .. I don't care about encrypting data in flight, I just want to restrict who can connect to the COM port on the other side of the IP device. It needs to work like the Lantronics ones do (take tcp/(port) and spit it out as rs232).
I may not understand your query, but I think the Perle IOLAN serial/terminal ethernet mini-servers can do that. They pop up on ebay in various shades of slightly-used, for around $40. Similar devices are Comtrol DeviceMasters, which are less featureful (and even cheaper). -- Henry Yen Aegis Information Systems, Inc. Senior Systems Programmer Hicksville, New York