[CentOS] ssh issues with centos 6

Gordon Messmer
Tue, 01 Mar 2016 18:12:14 -0000

On 02/29/2016 02:07 PM, Warren Young wrote:
>> so i enacted   rngd -r /dev/urandom -o /dev/random
> That?s essentially bogus.  If /dev/random is blocking due to insufficient
entropy, feeding false entropy in from urandom buys you nothing, other than to
fool /dev/random into thinking it has more entropy than it actually does.
>
> On a typical Linux system, /dev/random and /dev/urandom get their entropy
from the same source, so feeding pseudorandom numbers from one to the other is
essentially lying to the kernel; it will get its revenge on you for that lie,
eventually.

Indeed, the correct solution is to use /dev/urandom instead of /dev/random.