similar to: client host certificates and receiving host configuration

On 17/06/20, Damien Miller (djm at mindrot.org) wrote: > > Firstly, given a host CA signing key on the sshagentca server, would an > > appropriately constructed host certificate added to a forwarded agent > > replace the necessity for a '@cert-authority' line in a user's known_hosts > > file? > > I'm not sure I want to add yet another path (the agent)

On 07/12/23, Philip Prindeville (philipp_subx at redfish-solutions.com) wrote: > We have a CLI that certain users get dropped into when they log in. One of the things they can go is generate certificates (actually .p12 key/certificate bundles) that they will then scp out of the box from another host. Off topic, and assuming the .p12 bundles need to be post-processed by clients for use by ssh,

G'day, In our infrastructure we're trying to be more diligent about switching to sk keys (and/or certs backed by sk keys.) However, there are some services like Gerrit and Jenkins which are written in java and I guess they will never support sk keys, or at least, it seems like it won't happen any time soon. For such services, typical practices at the moment include putting

Hi, We have a CLI that certain users get dropped into when they log in. One of the things they can go is generate certificates (actually .p12 key/certificate bundles) that they will then scp out of the box from another host. Problem is that if their default shell isn't sh, ash, dash, bash, zsh, etc. then things break. Is there a workaround to allow scp/sftp to continue to work even for

On Tue, Mar 7, 2023, at 3:25 AM, Rory Campbell-Lange wrote: > On 07/03/23, Darren Tucker (dtucker at dtucker.net) wrote: >> On Tue, 7 Mar 2023 at 05:26, Andy Lutomirski <luto at kernel.org> wrote: >> [...] >> > ssh_config contains a Match ... exec [command to refresh the certificate]. >> > This sort of works, except that it runs the command far too

On 07/03/23, Darren Tucker (dtucker at dtucker.net) wrote: > On Tue, 7 Mar 2023 at 05:26, Andy Lutomirski <luto at kernel.org> wrote: > [...] > > ssh_config contains a Match ... exec [command to refresh the certificate]. > > This sort of works, except that it runs the command far too frequently. > > For example, ssh -O exit [name] refreshes the certificate, and it

On Thu, Jan 30, 2020 at 7:11 AM Christian, Mark <mark.christian at intel.com> wrote: > > On Thu, 2020-01-30 at 12:27 +0000, Brian Candler wrote: > > As a concrete example: I want Alice to be able to login as "alice" > > and > > "www" to machines in group "webserver" (only). Also, I want Bob to > > be > > able to login as

Hi, We're developing an open source project that uses SSH certificates. We issue short lived certificates (few minutes) to execute commands on behalf of users. We have a use case where we need to issue certificates with 10 days validity and store them, so we put a command inside them: ssh-keygen -s ca-key -I certN -n user -O force-command="wget something" -V +10d user-key.pub and

Wondering if it would make sense to have more granular control of trustedUserCAkeys? I have 1 key used to sign root certs, the key is shortlived, and is rotated daily. And I have a 2nd key to sign non- privileged user certs. The non-privileged certs have a longer validity period, and the signing keys are not rotated as frequently. It would be nice to ensure this second signing key's

Dear All, I am trying to use the hostcertificate to do the hostbaed authentication with the steps in the regress/cert-hostkey.sh But it seems that it can not login with the hostcertificate.: Here is debug message from the ssh client : ssh -2 -oUserKnownHostsFile=/opt/ssh/etc/known_hosts-cert \ > -oGlobalKnownHostsFile=/opt/ssh/etc/known_hosts-cert sshia3 -p 1111 -vvv debug1: checking

I am trying to find out how I can use the new self-signed certificates So what I read in the man pages, it should be something like: client: 1) ssh-keygen -f ca_rsa # generate a ssh keypair for use as a certificate Server(s): 2) make sure your /etc/ssh/sshd_config has TrustedUserCAKeys assigned TrustedUserCAKeys /etc/ssh/sshcakeys # or whatever name or location you like 3) edit

Hi, I'm experimenting with certificates for users, giving access via the TrustedUserCAKeys mechanism. Unfortunately, there seems to be a limit of one certificate per SSH key on the user's side, which prevents using the same key for hosts using different TrustedUserCAKeys. Is there a clean way around this? To make the above clearer, consider the following situation: A collection of hosts

On Fri, Mar 15, 2019 at 09:10:26AM +0000, Jochen Bern wrote: > Imagine sysadminning a boatload of VMs getting IPs from a dynamic pool, a la > > $ for ADDR in $CUSTOMER_1_RANGE $CUSTOMER_2_RANGE... ; do > > ping -c 1 -w 2 $ADDR >/dev/null 2>&1 && ssh root@$ADDR do_urgent_fix > > done > > , and it mightn't be that much of a niche anymore ... And

Hi, I'm experimenting with host certificates in 5.4p1 and seem to have hit a usability issue. I've generated a host certificate, added the HostCertificate option to the sshd_config and restarted sshd. I've replaced the system's ssh_known_hosts file with one that has a single entry of the form: @cert-authority *.example.domain ssh-rsa ... This works provided that I use the

Hi, I am using acts_as_athenticated plugin for my rails application. That plugin is using "SHA1" algorithm to encrypt password & stroe it into database. Now in future suppose user requsted his password through email, hhow should I decrypt that password in my application & for sending it through mail? Please help me. I am trying this since last 2 days. But still not

https://bugzilla.mindrot.org/show_bug.cgi?id=1777 Summary: KnownHostsCommand Product: Portable OpenSSH Version: 5.5p1 Platform: All OS/Version: All Status: NEW Severity: normal Priority: P2 Component: ssh AssignedTo: unassigned-bugs at mindrot.org ReportedBy: dkg at fifthhorseman.net A

Hi, There are a few minor tweaks I would like to suggest regrading the recently added TrustedUserCAKeys section in sshd_config(5). TrustedUserCAKeys Specifies a file containing public keys of certificate authorities that are trusted sign user certificates for authentication. Keys are listed one per line, empty lines and comments starting with

Hello, OpenSSH-wizards. In our company, we have looked into SSH-HostKey-signing in order to realize automated access without the need to accept the server's hostkey, manually. I got it to work with the HostCertificate-directive inside the sshd_config. Now, I was wondering whether it is possible to have multiple signatures, so I can, for example, sign the hostkey once with a

Hello, I am trying to work out the best way to issue SSH certificates in such way that they only allow access to specific usernames *and* only to specific groups of host. As a concrete example: I want Alice to be able to login as "alice" and "www" to machines in group "webserver" (only). Also, I want Bob to be able to login as "bob" and

Hello, Currently OpenSSH has a fixed order on how the key authenticates the user: at first it tries to authenticate against TrustedUserCAKeys, afterwards it does it against the output keys from the AuthorizedKeysCommand and finally against the files as set in AuthorizedKeysFile. I have an use-case where this order is not ideal. This is because in my case the command fetches keys from the cloud