5.4: Can't start ssh due to entropy source blocking?

Stephane Raimbault stephane at enertiasoft.com
Thu Sep 1 15:40:54 PDT 2005


Thanks for the suggestion, but it doesn't seem to be the case in my  
situation.

However I did notice things like nslookup and host are now reporting  
this error after attempting to start /etc/rc.d/sshd start

# host www.freebsd.org
Entropy device is blocking.

# nslookup www.freebsd.org
Entropy device is blocking.


I confirmed by rebooting the server and making sure sshd didn't try  
to start on bootup nslookup and host are working, as soon as I try to  
start sshd, I start getting the errors.

I am baffled as to what is going on.

Thank you,
Stephane Raimbault, Systems Administrator

Enertiasoft, a Premier Technologies Company
230n, 3015 5th Avenue NE Calgary, AB, Canada T2A 6T8
toll free. 866 ENE RTIA (363 7842)
office. 403 228 9292
fax. 403 228 8993

On 1-Sep-05, at 2:58 PM, Kurt Buff wrote:

> I ran into it just yesterday.
>
> I was walking a newb in our IT department through setting up a  
> server, and
> he used all caps for the domain.tld portion of the server name -
> testbed.ZETRON.COM.
>
> Had the same problem as you describe. Edited the /etc/rc.conf, had him
> reboot and try again, and it worked just fine.
>
> Kurt
>
>
>> -----Original Message-----
>> From: owner-freebsd-stable at freebsd.org
>> [mailto:owner-freebsd-stable at freebsd.org]On Behalf Of
>> Stephane Raimbault
>> Sent: Thursday, September 01, 2005 13:18
>> To: Vivek Khera
>> Cc: freebsd-stable at freebsd.org
>> Subject: Re: 5.4: Can't start ssh due to entropy source blocking?
>>
>>
>> yes sorry I wasn't more clear.  I tried putting a bunch of junk on
>> the screen as well as just left it blank and the result was the
>> same.  Is it possible I didn't provide enough junk?  I haven't seen
>> this behavior before?
>>
>> Thanks,
>> Stephane
>>
>> On 1-Sep-05, at 2:07 PM, Vivek Khera wrote:
>>
>>
>>>
>>> On Sep 1, 2005, at 1:29 PM, Stephane Raimbault wrote:
>>>
>>>
>>>
>>>> Type a full screenful of random junk to unblock
>>>> it and remember to finish with <enter>. This will
>>>> timeout in 300 seconds, but waiting for
>>>> the timeout without typing junk may make the
>>>> entropy source deliver predictable output.
>>>>
>>>> Just hit <enter> for fast+insecure startup.
>>>>
>>>>
>>>>
>>>
>>> so what did you do, just hit enter or did you follow the
>>> instructions and type a screenful of junk?
>>>
>>>
>>> Vivek Khera, Ph.D.
>>> +1-301-869-4449 x806
>>>
>>>
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>>>
>>
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>
>
>
>
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