BSD tty security, part 3: How to Fix It

[Rahul Dhesi]

In <19281 at rpp386.cactus.org> jfh at rpp386.cactus.org (John F Haugh II) writes:

>Can I change my baud rate while waiting for the SAK sequence?  Of
>course there's a need to turn off the SAK key - how long is a UUCP
>packet this week?

A secure attention key sequence, to be secure, must use an out-of-band
channel.  As an analogous example, the DTR line to a modem is
out-of-band and cannot be defeated no matter what you send on the data
lines.
--
Rahul Dhesi <dhesi at cirrus.COM>
UUCP:  oliveb!cirrusl!dhesi