Avocent / Cyclades boxes have ACL capability (they run Linux) and can be used with EV-DO/GSM modems. They may not be the lowest cost solution, but there is a central management system and a wide range of serial interface units from single port to at least 32 ports.
Jon Full disclosure: I was a member of their Customer Advisory Board On Wed, Mar 10, 2010 at 10:06 PM, R. Benjamin Kessler <r...@mnsginc.com> wrote: > >>On Mar 10, 2010, at 3:17 PM, 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. > >>We use SENA PS110 boxes ( >>http://www.sena.com/products/device_servers/hd_ps_x10.php ). They work >>very well, have various ACL features (dunno if it supports 5 named IP > or >not), and other configurables. > >>Caleb > > On a similar topic, any good solutions for out-of-band serial > console/Ethernet solutions that use EV-DO/GSM wireless Internet? > >