The Brother HL-2280DW (network printer) listens on port 23, but I can't get a working telnet session going. Telnet option negotiation seems to take place, but I get no login or any other sort of prompt. Pressing enter a few times, with or without typing random text, eventually results in the remote host disconnecting.
Here's a netcat dump of a session where I repeatedly press enter until disconnection: < 00000000 1b 5b 32 4a 1b 5b 31 3b 31 66 # .[2J.[1;1f < 0000000a ff fb 01 ff fb 03 ff fd 03 # ......... > 00000000 0a # . < 00000013 ff fb 01 ff fb 03 ff fd 03 # ......... < 0000001c 0d 0a # .. > 00000001 0a # . < 0000001e 0d 0a # .. > 00000002 0a # . < 00000020 0d 0a # .. > 00000003 0a # . < 00000022 0d 0a # .. > 00000004 0a # . < 00000024 0d 0a # .. > 00000005 0a # . If I understand this correctly, the first few lines are telnet option negotiation, but nothing after that. nmap reports: 23/tcp open telnet Brother/HP printer telnetd but I don't know if it's just assuming that daemon, since the machine is listening on port 23 and it's a Brother, or if it is actually managing to connect The documentation for this model doesn't seem to say anything about telnet access, and I can find no mention of it in the web management interface, which does list the other open ports / services, including FTP, SNMP, POP3 and SMTP. I have tried connecting to these other services, and they seem to work. So what do we have here? Some sort of broken, half-baked telnet service running, or am I doing something wrong? Celejar -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20131227000046.04498c2ebce89c8a4e97e...@gmail.com
