I have recently purchased a Cisco PIX 501 firewall and I have connected to the console port with a serial port USB adapter. After doing this I open up my terminal and start minicom. Here are my configurations for minicom:


After verifying the configurations I exit out of the configuration window and power on my firewall. After doing this I get this output in my terminal:

Terminal Output

I get this text continuously.

In addition to this, I have tried to connect to another Cisco device but I receive the same output

How do I resolve this?


1 Answer 1


Your config looks ok. I use screen for this, never quite got minicom working fine. Supposing the usb adapter is

$ ls -l /dev/ttyUSB0
crw-rw----. 1 root dialout 188, 0 Apr 20 20:37 /dev/ttyUSB0


screen /dev/tty 9600,-cstop,-cs8,-parenb

so 9600 baud, one stop bit, 8 data bits, no parity.

If your user is not member of the dialout group (or group indicated on the output of ls), run it as root.

  • Thanks for the reply, I still cannot see text even when using screen. The cursor jumps around but thats all that happens.
    – NSPredator
    Apr 20, 2016 at 18:53
  • have you tried with another switch/router? Just to make sure your usb adapter is ok? Apr 20, 2016 at 19:01
  • Hello, I have tried another Cisco device and get the same results
    – NSPredator
    Apr 20, 2016 at 19:02
  • ok, and does it by any chance work ok from a pc running Windows? I think nowadays people use putty because hyperterminal is no longer available (not sure, I just believe I overheard someone say it) Apr 20, 2016 at 19:08

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