Openssh 8.4

Posted By admin  On 30.04.21



SSH (Secure Shell) is a protocol which facilitates secure communications between two systems using a client-server architecture and allows users to log in to server host systems remotely. Unlike other remote communication protocols, such as FTP or Telnet, SSH encrypts the login session, rendering the connection difficult for intruders to collect unencrypted passwords. With OpenSSH 8.4, agent forwarding is now available in scp and sftp. Agent Forwarding is the most controversal feature in ssh. What are you thinking. Is this a long awaiting feature or another security risk? Configuring an OpenSSH Server To run an OpenSSH server, you must first make sure that you have the proper RPM packages installed. The openssh-server package is required and is dependent on the openssh package. Openssh-server-8.4p1-41-1-x8664.eopkg: OpenSSH Daemon: Solus Unstable x8664 Official: openssh-server-8.4p1-41-1-x8664.eopkg: OpenSSH Daemon: Ubuntu 20.10 (Groovy. OpenSSH is a freely available version of the Secure Shell (SSH) protocol family of tools for remotely controlling, or transferring files between, computers. Traditional tools used to accomplish these functions, such as telnet or rcp, are insecure and transmit the user’s password in cleartext when used.

Download Page for openssh-server_8.4p1-5_i386.deb on Intel x86 machines

Viewsonic network & wireless cards driver download. If you are running Debian, it is strongly suggested to use a package manager like aptitude or synaptic to download and install packages, instead of doing so manually via this website.

You should be able to use any of the listed mirrors by adding a line to your /etc/apt/sources.list like this:

Replacing ftp.de.debian.org/debian with the mirror in question.

You can download the requested file from the pool/main/o/openssh/ subdirectory at any of these sites:

North America

South America

Asia

Africa

Europe

Oceania

If none of the above sites are fast enough for you, please see our complete mirror list.

Note that in some browsers you will need to tell your browser you want the file saved to a file. For example, in Firefox or Mozilla, you should hold the Shift key when you click on the URL.

More information on openssh-server_8.4p1-5_i386.deb:

Exact Size422120 Byte (412.2 kByte)
MD5 checksum1dd5509964d6fcf5a86eb82576c9bb6e
SHA1 checksumNot Available
SHA256 checksumd498a6e802dae6a6fc020b3f2c29a28745bef0d2571e5852e49601d73cef587e
OpenSSH 8.5 has been released. It includes fixes for a couple of potentialsecurity problems (one of which only applies to Solaris hosts); it alsoenables UpdateHostKeys by default, allowing hosts with insecurekeys to upgrade them without creating scary warnings for users. There area lot of other small changes; see the announcement for details.
From:Damien Miller <djm-AT-cvs.openbsd.org>
To:oss-security-AT-lists.openwall.com
Subject:[oss-security] Announce: OpenSSH 8.5 released
Date:Tue, 02 Mar 2021 18:19:55 -0700
Message-ID:<12510d5a023346ec@cvs.openbsd.org>
Archive-link:Article
Openssh


(Log in to post comments)

OpenSSH 8.5 released

Posted Mar 3, 2021 18:13 UTC (Wed) by josh (subscriber, #17465) [Link]

> * ssh(1): disable CheckHostIP by default. It provides insignificant
> benefits while making key rotation significantly more difficult,
> especially for hosts behind IP-based load-balancers.

I'm excited to see this change.

8.4

> * ssh(1): when prompting the user to accept a new hostkey, display
> any other host names/addresses already associated with the key.

And this one, though it could produce a massive amount of output in some cases.

Openssh 8.4p1 Rpm

OpenSSH 8.5 released

8.4

Posted Mar 3, 2021 23:12 UTC (Wed) by unixbhaskar (subscriber, #44758) [Link]

> * ssh(1): when prompting the user to accept a new hostkey, display
> any other host names/addresses already associated with the key.

This one would be really interesting!

OpenSSH 8.5 released

Posted Mar 4, 2021 1:03 UTC (Thu) by djm (subscriber, #11651) [Link]

> And this one, though it could produce a massive amount of output in some cases.

yeah, if this turns out to be a problem in practice then let us know and we'll add a limit.

OpenSSH 8.5 released

Posted Mar 4, 2021 7:11 UTC (Thu) by josh (subscriber, #17465) [Link]

I'd expect the common case for me to be in the hundreds. That doesn't seem unreasonable, depending on how it's presented.

OpenSSH 8.5 released

8.5

Posted Mar 4, 2021 10:36 UTC (Thu) by johill (subscriber, #25196) [Link]

I think they meant *host* key, not *client* key, here? At least that's how I read it? Hmm, maybe not?

OpenSSH 8.5 released

Posted Mar 4, 2021 11:33 UTC (Thu) by nye (guest, #51576) [Link]

8.3
As in you're re-using the same host key on hundreds of machines, or you're connecting to the same machine via hundreds of aliases? Both of these seem like pretty niche use cases that I'd only expect to see in some kind of automated environment (probably involving throwaway test systems in the first case, given the risk involved in reusing a key).

OpenSSH 8.5 released

Posted Mar 4, 2021 11:37 UTC (Thu) by Cyberax (✭ supporter ✭, #52523) [Link]

No, reusing the same IP for different throwaway hosts.

OpenSSH 8.5 released

Posted Mar 4, 2021 12:21 UTC (Thu) by nye (guest, #51576) [Link]

Openssh 8.4 Ubuntu

Well unless those hosts are reusing the same host key then there won't be any 'other host names/addresses already associated with the key', so you can't end up with a list containing hundreds of entries.

(And if they *are* reusing the same key, then you still won't end up with such a list unless you connect via a new throwaway DNS name for each one instead of using a fixed hostname or the unchanging IP address.)

OpenSSH 8.5 released

Posted Mar 4, 2021 22:06 UTC (Thu) by Cyberax (✭ supporter ✭, #52523) [Link]

Uh, the hosts will have different keys but the same IP. So you get the dreaded 'WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED' message from SSH each time you try to connect.

OpenSSH 8.5 released

Posted Mar 4, 2021 16:16 UTC (Thu) by josh (subscriber, #17465) [Link]

Same virtual machine, same host key, no hostname, different IPs.

OpenSSH 8.5 released

Posted Mar 4, 2021 17:43 UTC (Thu) by nye (guest, #51576) [Link]

Now I'm *really* curious. What's the application here? No worries if it's something you can't/don't want to go into.

OpenSSH 8.5 released

Posted Mar 4, 2021 22:06 UTC (Thu) by josh (subscriber, #17465) [Link]

Virtual machine instances that are regularly shut down and brought back up, and don't have or need a static IP. Start instance, get IP for instance, SSH to instance, work with instance, shut down instance.

OpenSSH 8.5 released

Posted Mar 7, 2021 12:21 UTC (Sun) by vadim (subscriber, #35271) [Link]

You can configure a DHCP server to hand out leases for a long time, like a month or even a year.

Openssh 8.4 Download

Then you'll have a lot less of this happening, as each VM will end up using the same address virtually all the time.

Download Openssh For Windows 10

OpenSSH 8.5 released

Posted Mar 7, 2021 15:12 UTC (Sun) by Cyberax (✭ supporter ✭, #52523) [Link]

> Then you'll have a lot less of this happening, as each VM will end up using the same address virtually all the time.
Then you'll run out of addresses, since VMs are disposable and each new VM gets a new MAC.

OpenSSH 8.5 released

Posted Mar 8, 2021 0:22 UTC (Mon) by josh (subscriber, #17465) [Link]

Cloud providers don't typically do this in their DHCP servers. (And I think it makes sense that they don't, for a variety of reasons, not least of which that it's better to show people very quickly that IPs will change, rather than let them experience breakage later on.)

My use case: one hundred systems with the same ssh host key

Posted Mar 8, 2021 17:13 UTC (Mon) by emmi3 (guest, #62443) [Link]

I have the following setup: nearly one hundred thin clients for home office use ('Telearbeit' / tele work) running from the same live linux image.

Openssh Client Windows10

The (cutomized) images are built using live-build form debian-live. Normally live-build would delete the ssh host key during build time and live-config would create a new ssh host key on every startup. This was undesirable since ssh would complain about the changed host key after every reboot of the thin client. Therefore I baked one predefined host key directly into the image.

The thin clients are connected to our university environment via wireguard using a 10-something private subnet. Thus we have nearly one hundred different physical hosts (with different but fixed IPs and hostnames) using the same ssh host key.

Openssh 8.4 Rpm

I don't see anything wrong with this setup and I think this is a valid use case. If my ssh client starts complaining about all those hosts having the same host key, I will have to start creating separate keys for every client and distributing them like I do with the wireguard preshared keys and other client specific data right now. No big deal, but I don't really see any benefit from this.