[Info-vax] SSH/SCP sessions hanging for 7 minutes while reading from "/dev/random"

Scott Dorsey kludge at panix.com
Thu Sep 30 18:41:33 EDT 2021


=?UTF-8?Q?Arne_Vajh=c3=b8j?=  <arne at vajhoej.dk> wrote:
>I am puzzled about why it tries to read from /dev/random
>on VMS - it should try and get some random bytes via
>SYS$GETJPIW, SYS$GETSYI and SUS$GETDVIW - or something
>like that.

What he is seeing is the result of a printf statement that is activated
only when the debug flag is set.

So it is likely doing exactly what you describe, but nobody has changed 
the printf statement in the source accordingly.  Exactly what it's doing 
you'd have to look in the source for, but a grep on "/dev/random" ought 
to get you to the right place.

Note that this is a very ancient, perhaps historical version of ssh and
it doesn't support any modern encryption.
--scott
-- 
"C'est un Nagra. C'est suisse, et tres, tres precis."



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