SSH 3.2.2 on Solaris 8 with /kernel/drv/random

Ed Phillips ed at UDel.Edu
Fri May 17 23:14:01 EST 2002

On Fri, 17 May 2002, Sean Boran wrote:

> Date: Fri, 17 May 2002 11:03:01 +0200
> From: Sean Boran <sean at>
> To: openssh-unix-dev at
> Subject: SSH 3.2.2 on Solaris 8 with /kernel/drv/random
> Hi,
> I'm like to try a get the new release to work with Sun's new device,
> that can be installed with patch 112438-01.
> I compiled SSL attempting to point it at the random device:
> cd openssl-0.9.6d
> ./Configure solaris-sparcv7-gcc
> make DEVRANDOM="/kernel/drv/random"

Not necessary.  Just do "make".

> And then ran the SSH configure:
> ./configure --prefix=/opt/OBSDssh --with-pam --without-rsh \
> --sysconfdir=/etc/ssh --with-pid-dir=/var/run --disable-suid-ssh \
> --with-tcp-wrappers=../tcp_wrappers_7.6

Also add, --without-rand-helper.

> But am not convinced this is correct.
> and I also tried:
> ./configure --prefix=/opt/OBSDssh --with-pam --without-rsh \
> --sysconfdir=/etc/ssh --with-pid-dir=/var/run --disable-suid-ssh \
> --with-tcp-wrappers=../tcp_wrappers_7.6 \
> --with-prngd-socket=/kernel/drv/random
> And configure says:
>              Random number source: ssh-rand-helper
>      ssh-rand-helper collects from: Unix domain socket
> "/kernel/drv/random"

It'll say "Random number source: OpenSSL internal" or something to that

> But I don't think /kernel/drv/random is a socket, "ls" lists it as a
> normal file.
> ls -alF /kernel/drv/random
> -rwxr-xr-x   1 root     sys        15704 Mar 15 00:33
> /kernel/drv/random*

/kernel/drv/random is the kernel *driver* which is not the random number
"device" file that you want to read.  OpenSSL will automatically use

> If I compile SSH as above and then try to use the random device I get:
> ./ssh-rand-helper
> Couldn't connect to PRNGD socket "/kernel/drv/random": Socket operation
> on non-socket. Entropy collection failed
> So the question: has anyone got SSH to work with Sun's random device and
> if so, how did you do it?

Yep... it works great! ;-)


Ed Phillips <ed at> University of Delaware (302) 831-6082
Systems Programmer III, Network and Systems Services
finger -l ed at for PGP public key

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