Re: z/OS 1.12 ssh to LInux

2021-04-08 Thread Kirk Wolf

I should have been more clear:

The newer linux openssh server *could* support host key algorithms like 
ssh-rsa, ssh-dsa, but it doesn't have any of those configured.


Kirk Wolf
Dovetailed Technologies
http://dovetail.com

On 4/8/21 8:09 AM, Kirk Wolf wrote:
The linux server is pretty new (OpenSSH 8.4) and only supports the 
following host key algorithms:


debug2: kex_parse_kexinit:
rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519

an old OpenSSH 5.0 client won't support any of these.

Kirk Wolf
Dovetailed Technologies
http://dovetail.com

On 3/25/21 8:07 AM, John McKown wrote:

debug2: kex_parse_kexinit:
rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519


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Re: z/OS 1.12 ssh to LInux

2021-04-08 Thread Kirk Wolf
The linux server is pretty new (OpenSSH 8.4) and only supports the 
following host key algorithms:


debug2: kex_parse_kexinit:
rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519

an old OpenSSH 5.0 client won't support any of these.

Kirk Wolf
Dovetailed Technologies
http://dovetail.com

On 3/25/21 8:07 AM, John McKown wrote:

debug2: kex_parse_kexinit:
rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519


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Re: z/OS 1.12 ssh to LInux

2021-03-25 Thread John McKown
On Thu, Mar 25, 2021 at 8:18 AM John McKown 
wrote:

> On Thu, Mar 25, 2021 at 8:14 AM Dave Jousma <
> 01a0403c5dc1-dmarc-requ...@listserv.ua.edu> wrote:
>
>> only a guess.  But couldnt find an encryption cipher in common?   You
>> might need to enable less secure ciphers in your linux system?
>>
>
> I think you're right. Now I'm trying to track down how to do that. I need
> "ssh for complete idiots".
>

How is it that just a few minutes after posting a question here, I find the
answer on the web??? On FC33, I had to issue the command (as root):

update-crypto-policies --set LEGACY

and then reboot.

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Re: z/OS 1.12 ssh to LInux

2021-03-25 Thread John McKown
On Thu, Mar 25, 2021 at 8:14 AM Dave Jousma <
01a0403c5dc1-dmarc-requ...@listserv.ua.edu> wrote:

> only a guess.  But couldnt find an encryption cipher in common?   You
> might need to enable less secure ciphers in your linux system?
>

I think you're right. Now I'm trying to track down how to do that. I need
"ssh for complete idiots".



>
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Re: z/OS 1.12 ssh to LInux

2021-03-25 Thread Dave Jousma
only a guess.  But couldnt find an encryption cipher in common?   You might 
need to enable less secure ciphers in your linux system?

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