cctr119@csc.canterbury.ac.nz (Ray Jans, Network Consultant, R.Jans@Canterbury.AC.NZ) (02/25/91)
I am having a problem using NCSA Telnet v2.3beta14 with an Emulex PK4000 type terminal servers configured for reverse telnet connections. The problem I have is two fold. Problem 1: We have a GA8830 computer for our library database that does not have an ethernet controller. It has a large number of serial ports. Hence we have used an emulex terminal server configured for reverse TCP so that PCs running NCSA Telnet can access the GA. However, Telnet sends a carriage return (CR) followed by a linefeed (LF) which is interpreted by the GA as two ends of records. I want to be able to configure NCSA Telnet to send a carriage return followed by a null instead. The crmap=4.3BSDCRNUL in config.tel doesn't seem to do it. The line set key \13 13 in the keyboard mapping file doesn't do it either. Do I need to modify the source code? If so, where is the code that needs to be changed? I have the source for NCSA Telnet and a Turbo C compiler. Do I need anything else (eg an assembler) to regenerate the telbin.exe file? Any suggestions as to which make (command) files I should look at to recompile all source files and link all object files? Problem 2: NCSA Telnet tries to negotiate connection modes with the terminal server when establishing a connection but the terminal server doesn't interpret the codes it receives from NCSA Telnet. Instead it sends them onto the terminal port so that the host connected to the terminal server echoes back the codes. The host only has RS232 ports and does not understand anything about TCP/IP or Telnet. In particular the following codes are echoed back by the host to the PC: [Sent: Do Echo] [Sent: Will Suppress GA] [Sent: Do Supress GA] [Recd: Do Echo] [Sent: Wont Echo] [Recd: Do Supress GA] [Recd: Will ??] [Sent: Dont ??] [Recd: Wont Echo] [Recd: Do Suppress GA] [Recd: Will Suppress GA] [Recd; Dont Echo] Does anyone know how to set up reverse telnet on an emulex server to work properly with NSCA Telnet? Alternatively, is there a way of turning off the mode negotiation at connect time in NCSA Telnet? Thanks in advance Ray Jans Network Consultant Computer Services Centre University of Canterbury Christchurch New Zealand Email: r.jans@canterbury.ac.nz fax: CHCH 642-999