> That is certainly > some rather odd behaviour... The fact that the other ports remained > makes it likely an application (modbus) problem.
Yes, I thought it was interesting. I really wish I didn't fry the thing as I'd like to have eliminated the possibility it was something funny on my end. So far, not a great record - these things seems about as robust as network printers, which is to say, not very. > Was it an ethernet > to rs232 converter? (I obviously didn't look up the part number). RS-485 to Ethernet. > Did you happen to catalogue the 'crud' which you sent prior to > failure? I wish I had; but it was nothing unusual. I like to start out by scanning and hammering these devices with common tools, so I used nmap, nessus and amap. If I had to pick something, it would be setting amap on 502/tcp overnight that did it. > I know particular header options have unexpected results a > great deal of control systems. I also know particular vendor's ip > stack implementations have been known to be produced some very things, > eg, odd ip options (off the top of my head the AB series of PLCs). Yes indeed, I can not wait to get my hands on some real PLCs, and not just these little converters or more modern pieces. > Now I'm curious, what other devices are you testing? 2 more devices arrived yesterday: - i.Board i.CanDoIt embedded webserver (http://www.csimn.com/CSI_pages/iboard.html) which is built similar to the Kohler in that it uses an embedded ethernet module, but this time from Digi (http://www.digi.com/products/embeddedsolutions/digiconnectme.jsp) - ADAM-4572 (http://www.ucs.co.uk/index.php?pid=948) - Lantronix MSS485-T (http://www.lantronix.com/device-networking/external-device-servers/mss485-t.html) - Phoenix Contact FL IL 24 BK-PAC (http://tinyurl.com/2c6x96) - DLI Ethernet DIN Relay (http://www.digital-loggers.com/din.html) _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
