Re: Help needed after upgrade Reply Take two and a half.

From	Davey <davey@example.invalid>
Newsgroups	uk.comp.os.linux
Subject	Re: Help needed after upgrade Reply Take two and a half.
Date	2025-04-29 16:05 +0100
Organization	A noiseless patient Spider
Message-ID	<vuqps2$2155f$1@dont-email.me> (permalink)
References	(7 earlier) <vp6uel$2pd63$2@dont-email.me> <vp7epu$2sb9b$1@dont-email.me> <vpd1vp$1pht$1@dont-email.me> <vpf7je$h3kb$1@dont-email.me> <vpfab8$hc0a$1@dont-email.me>

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On Sun, 23 Feb 2025 14:11:52 +0000
Davey <davey@example.invalid> wrote:

> On Sun, 23 Feb 2025 13:27:47 +0000
> Daniel James <daniel@me.invalid> wrote:
> 
> > On 22/02/2025 17:36, Davey wrote:  
> > > I found that ssh would not work, and that I need to write:
> > > ssh -v -oHostKeyAlgorithms=+ssh-rsadavid@192.168.1.164
> > > to get to that PC.    
> > [snip]  
> > > Unable to negotiate with 192.168.1.164 port 22: no matching host
> > > key type found. Their offer: ssh-rsa,ssh-dss rsync: connection
> > > unexpectedly    
> > 
> > 
> > What that means is that you are having to specify explicitly an
> > old, less secure, cipher in order to connect to 192.168.1.164
> > because that machine doesn't (or isn't configured to) support the
> > newer, more secure, ciphers that your ssh client wants to use.
> > 
> > As Richard Kettlewell has said, that suggests strongly that you need
> > to update your server to a version that uses more secure ciphers,
> > rather than trying to force the client to use obsolete ones.
> > 
> > What OS is 192.168.1.164 running? It sounds as though it must be
> > pretty old.
> >   
> 
> It certainly is old:
> Ubuntu 8.04 !!!
> The PC it is on came with Windows Millennium installed. That is now
> long gone, thank goodness.
> 
> It is firstly a Zoneminder PC, but with much spare memory capacity.
> Every time I tried to update it to a newer version it borked the ZM in
> some way or other, so I left it with the system that works. It doesn't
> connect to the Internet, so doesn't worry about lack of updates.
> It is used for the laptop's nightly back-up with rsync.
> But I get the same problem when I try to rsync from the laptop to my
> newish desktop, running Ubuntu 22.04 installed from the same USB stick
> as this laptop's was.
> Is this a confirmation that I should (try to) update to OpenSSH on all
> connected machines?
> When I had Ubuntu 18.04 on the laptop, rsync worked fine with both
> those PCs.
> 
> The original purpose of the new desktop was to have a modern
> up-to-date machine for a new Zoneminder setup, but I could neither
> get the different hardware to work, nor the software, so I abandoned
> that idea after wasting enough time. The desktop is now my backup
> working PC for if the laptop fails (!), and is also another of the
> laptop's nightly backup destinations.
> Thanks for the help.
> 
 I am still looking for a way to include the:
 
ssh -v-oHostKeyAlgorithms=+ssh-rsadavid@192.168.1.164 

string into my rsync instructions.  I use the machine as a data
backup for my daily running PC, it is always on anyway, so
is the perfect depository for daily backup files. Although the updated,
but years apart, OpenSSH updates allow the newer PCs to SSH between
themselves, I still can only SSH into the ~~.164 machine using the
above string. But I cannot find how to incorporate that string into an
rsync instruction, so I have to SSH in and then update files manually,
as opposed to letting rsync do it automatically. I refuse to upgrade
the ~~.164's OS, as I am sure that it will ruin the perfectly happily
working Zoneminder installation on that machine, and if it ain't broke,
don't fix it. As I related elsewhere, I tried to use new Zoneminder and
a new input card on my new Desktop, with zero success. Zoneminder now
has so many bells ans whistles that you can't see the basic stuff.
Anybody want a used 4-channel PCIe camera input card?

Any help with this rsync/ssh problem much appreciated.

-- 
Davey.

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Help needed after upgrade Davey <davey@example.invalid> - 2025-02-14 16:27 +0000
  Re: Help needed after upgrade Theo <theom+news@chiark.greenend.org.uk> - 2025-02-14 17:57 +0000
    Re: Help needed after upgrade Davey <davey@example.invalid> - 2025-02-14 19:56 +0000
      Re: Help needed after upgrade Reply Take two. Davey <davey@example.invalid> - 2025-02-16 19:10 +0000
        Re: Help needed after upgrade Reply Take two. Daniel James <daniel@me.invalid> - 2025-02-16 23:35 +0000
          Re: Help needed after upgrade Reply Take two. Davey <davey@example.invalid> - 2025-02-17 08:46 +0000
            Re: Help needed after upgrade Reply Take two. Daniel James <daniel@me.invalid> - 2025-02-17 16:59 +0000
              Re: Help needed after upgrade Reply Take two. Davey <davey@example.invalid> - 2025-02-17 17:50 +0000
              Re: Help needed after upgrade Reply Take two. Davey <davey@example.invalid> - 2025-02-20 09:59 +0000
                Re: Help needed after upgrade Reply Take two. Daniel James <daniel@me.invalid> - 2025-02-20 14:41 +0000
                Re: Help needed after upgrade Reply Take two. Davey <davey@example.invalid> - 2025-02-20 17:45 +0000
                Re: Help needed after upgrade Reply Take two. Davey <davey@example.invalid> - 2025-02-20 17:46 +0000
                Re: Help needed after upgrade Reply Take two. Davey <davey@example.invalid> - 2025-02-22 17:36 +0000
                Re: Help needed after upgrade Reply Take two. Richard Kettlewell <invalid@invalid.invalid> - 2025-02-22 21:11 +0000
                Re: Help needed after upgrade Reply Take two. Davey <davey@example.invalid> - 2025-02-22 22:47 +0000
                Re: Help needed after upgrade Reply Take two. Davey <davey@example.invalid> - 2025-02-23 12:45 +0000
                Re: Help needed after upgrade Reply Take two. Richard Kettlewell <invalid@invalid.invalid> - 2025-02-23 13:43 +0000
                Re: Help needed after upgrade Reply Take two. Davey <davey@example.invalid> - 2025-02-23 14:16 +0000
                Re: Help needed after upgrade Reply Take two. Daniel James <daniel@me.invalid> - 2025-02-23 13:27 +0000
                Re: Help needed after upgrade Reply Take two. Davey <davey@example.invalid> - 2025-02-23 14:11 +0000
                Re: Help needed after upgrade Reply Take two. Richard Kettlewell <invalid@invalid.invalid> - 2025-02-23 17:06 +0000
                Re: Help needed after upgrade Reply Take two. Davey <davey@example.invalid> - 2025-02-23 17:34 +0000
                Re: Help needed after upgrade Reply Take two. Daniel James <daniel@me.invalid> - 2025-02-23 19:40 +0000
                Re: Help needed after upgrade Reply Take two. Davey <davey@example.invalid> - 2025-02-23 22:04 +0000
                Re: Help needed after upgrade Reply Take two. Daniel James <daniel@me.invalid> - 2025-02-24 16:52 +0000
                Re: Help needed after upgrade Reply Take two. Davey <davey@example.invalid> - 2025-02-24 17:17 +0000
                Re: Help needed after upgrade Reply Take two. Daniel James <daniel@me.invalid> - 2025-02-23 19:33 +0000
                Re: Help needed after upgrade Reply Take two. Richard Kettlewell <invalid@invalid.invalid> - 2025-02-23 23:23 +0000
                Re: Help needed after upgrade Reply Take two. Daniel James <daniel@me.invalid> - 2025-02-24 16:31 +0000
                Re: Help needed after upgrade Reply Take two. Richard Kettlewell <invalid@invalid.invalid> - 2025-02-24 20:20 +0000
                Re: Help needed after upgrade Reply Take two and a half. Davey <davey@example.invalid> - 2025-04-29 16:05 +0100
                Re: Help needed after upgrade Reply Take two and a half. Daniel James <daniel@me.invalid> - 2025-04-29 17:40 +0100
                Re: Help needed after upgrade Reply Take two and a half. Davey <davey@example.invalid> - 2025-04-29 17:44 +0100
                Re: Help needed after upgrade Reply Take two and a half. Java Jive <java@evij.com.invalid> - 2025-04-29 18:29 +0100
                Re: Help needed after upgrade Reply Take two and a half. Richard Kettlewell <invalid@invalid.invalid> - 2025-04-29 20:33 +0100
                Re: Help needed after upgrade Reply Take two and a half. Java Jive <java@evij.com.invalid> - 2025-04-29 22:16 +0100
                Re: Help needed after upgrade Reply Take two and a half. Richard Kettlewell <invalid@invalid.invalid> - 2025-04-29 23:17 +0100
                Re: Help needed after upgrade Reply Take two and a half. Java Jive <java@evij.com.invalid> - 2025-04-29 23:23 +0100
                Re: Help needed after upgrade Reply Take two and a half. Richard Kettlewell <invalid@invalid.invalid> - 2025-04-30 08:12 +0100
                Re: Help needed after upgrade Reply Take two and a half. Java Jive <java@evij.com.invalid> - 2025-04-30 17:08 +0100
                Re: Help needed after upgrade Reply Take two and a half. Davey <davey@example.invalid> - 2025-05-04 17:14 +0100
                Re: Help needed after upgrade Reply Take two and a half. Davey <davey@example.invalid> - 2025-05-05 07:56 +0100
                Re: Help needed after upgrade Reply Take two. Gordon <Gordon@leaf.net.nz> - 2025-05-24 08:00 +0000
                Re: Help needed after upgrade Reply Take two. Richard Kettlewell <invalid@invalid.invalid> - 2025-05-24 10:55 +0100
            Re: Help needed after upgrade Reply Take two. Gordon <Gordon@leaf.net.nz> - 2025-05-24 07:50 +0000
  Re: Help needed after upgrade Test post Davey <davey@example.invalid> - 2025-02-16 19:08 +0000

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