![]() ![]() ![]() = LG bit: Globally unique address (factory default) Why is it different? Below are expanded dissections, perhaps someone could tell me how to craft the connection establishment so that the client will not RST immediately? Can it be that the client uses some primitive os fingerprint to cut off non-windows clients? Keep it short, its also a good idea to gzip it to make it even smaller, as Wireshark can open gzipped files automatically. That is, I send SYN but receive RST,ACK (whereas the captured terminal sends SYN and receives the normal SYN,ACK): XXX - Add a simple example capture file to the SampleCaptures page and link from here. When I tried echo -e 'LON\r' | nc 192.168.100.100 9004 under Linux (or just opening the connection via nc), the connection closes right away. I could also do this connection using telnet client under Windows (or puttty or ncat). Then user analyzes individual packet to get username and password. There is initial connection establishment (as far as I see), then the client sends LON\r (laser on, presumably) and the sensor returns 5678\r (that is the value read from the bar code which is in the front of the sensor). After successful login, wireshark captures telnet packets. I could talk to it with the provided (windows-only) app called AutoID Terminal and ontained wireshark dump of those 6 packets exchanged. I have a barcode sensor (Keyence SR-2000) which is able to talk a simple plaintext-based protocol. ![]()
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