similar to: [Bug 1788] New: simple option to ignore known_hosts

On 14/02/2024 11:42, Chris Green wrote: > Is there any way to remove old entries from the known_hosts file? With > the hashed 'names' one can't easily see which entries are which. I > have around 150 lines in my known hosts but in reality I only ssh to a > dozen or so systems. All the redundant ones are because I have a > mixed population of Raspberry Pis and such on

https://bugzilla.mindrot.org/show_bug.cgi?id=2738 Bug ID: 2738 Summary: UpdateHostKeys does not check keys in secondary known_hosts files Product: Portable OpenSSH Version: 7.4p1 Hardware: amd64 OS: Linux Status: NEW Severity: minor Priority: P5 Component: ssh

https://bugzilla.mindrot.org/show_bug.cgi?id=1654 Darren Tucker <dtucker at dtucker.net> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED --- Comment #7 from Darren Tucker <dtucker at

Scenario: I have access to a semi-public (about 30 users) server where I keep my webpage. Occasionally, especially if I'm on the road. I use this as a bounce point to get to "secured" systems which only allow ssh from certian IP's. (Ignoring the discussion on spoofing, since we have host keys) But host keys are the problem. If anyone gets root on this hypothetical

On 18/8/23 18:37, Jochen Bern wrote: > On 18.08.23 07:39, Darren Tucker wrote: >> On Fri, 18 Aug 2023 at 15:25, Stuart Longland VK4MSL <me at vk4msl.com> >> wrote: >> [...] >>> The crux of this is that we cannot assume the local IPv4 address is >>> unique, since it's not (and in many cases, not even static). >> >> If the IP address is

On Sun, Oct 04, 2020 at 10:50:32PM +1100, Damien Miller wrote: > On Sun, 4 Oct 2020, Matthieu Herrb wrote: > > > On Sun, Oct 04, 2020 at 09:24:12PM +1100, Damien Miller wrote: > > > On Sun, 4 Oct 2020, Damien Miller wrote: > > > > > > > No - I think you've stumbled on a corner case I hadn't anticipated. > > > > Does your configuration

Hi folks, maybe I am too blind to see, but would it be possible to avoid extra entries in known_hosts, if the remote host has a signed public key matching a @cert-authority line? Something like Host * HashKnownHosts unsigned This could help to keep the known_hosts file small and yet get all the unsigned public keys in. Just a suggestion, of course. Regards Harri

Brian Candler wrote: > Chris Green wrote: > > ... redundant ones are because I have a mixed population of > > Raspberry Pis and such on my LAN and they get rebuilt fairly > > frequently and thus, each time, get a new entry in known_hosts. > ...many useful tips... > To disable host key checking altogether for certain domains and/or networks, > you can put this in

Hi list members, just tried to get some old records out of my known_hosts, which is 'HashKnownHosts yes'. Is there a way to unhash host names and/or IPs? Google tells about, how to add hosts, but not the opposite, may be I miss some thing. Is this does not work at all, is there a best practice for cleaning old hosts and keys out? Thanks, Martin! -- Martin GnuPG Key Fingerprint, KeyID

On 18.08.23 07:39, Darren Tucker wrote: > On Fri, 18 Aug 2023 at 15:25, Stuart Longland VK4MSL <me at vk4msl.com> wrote: > [...] >> The crux of this is that we cannot assume the local IPv4 address is >> unique, since it's not (and in many cases, not even static). > > If the IP address is not significant, you can tell ssh to not record > them ("CheckHostIP

https://bugzilla.mindrot.org/show_bug.cgi?id=1993 Bug #: 1993 Summary: ssh tries to add keys to ~/.ssh/known_hosts though StrictHostKeyChecking yes is set Classification: Unclassified Product: Portable OpenSSH Version: 5.9p1 Platform: All OS/Version: All Status: NEW Severity: normal

Is there any way to remove old entries from the known_hosts file? With the hashed 'names' one can't easily see which entries are which. I have around 150 lines in my known hosts but in reality I only ssh to a dozen or so systems. All the redundant ones are because I have a mixed population of Raspberry Pis and such on my LAN and they get rebuilt fairly frequently and thus, each time,

https://bugzilla.mindrot.org/show_bug.cgi?id=1654 Darren Tucker <dtucker at dtucker.net> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |dtucker at dtucker.net --- Comment #5 from Darren Tucker <dtucker at dtucker.net> --- Created attachment

https://bugzilla.mindrot.org/show_bug.cgi?id=1993 --- Comment #8 from Damien Miller <djm at mindrot.org> --- The hostkeys-00 at openssh.com extension has to be explicitly enabled via UpdateHostKeys=yes|ask The OP's question is the CheckHostIP option updating addresses for hostnames it already knows about. We could probably clarify the documentation for this behaviour, but if you want

On Tue, 29 Sep 2020 at 23:16, Nico Kadel-Garcia <nkadel at gmail.com> wrote: [...] > I gave up on $HOME/.ssh/known_hosts a *long* time ago, because if > servers are DHCP distributed without static IP addresses they can wind > up overlapping IP addresses with mismatched hostkeys You can set CheckHostIP=no in your config. As long as the names don't change it'll do what you

https://bugzilla.mindrot.org/show_bug.cgi?id=1993 --- Comment #9 from Christoph Anton Mitterer <calestyo at scientia.net> --- (replies to all your comments in one) Hey. Sorry for the delay. (In reply to Darren Tucker from comment #5) > > $ ssh -o StrictHostKeyChecking=no someHost > > Warning: Permanently added the ECDSA host key for IP address > >

It would be useful to allow matching HostName entries against Host entries. That's to say, I would find it very convenient to have an ssh_config like: Host zeus HostName zeus.greek.gods User hades Host hera HostName hera.greek.gods # [ ... ] Host *.greek.gods User poseidon UserKnownHostsFile ~/.ssh/known_hosts.d/athens # [ Default settings for *.greek.gods ] where I

https://bugzilla.mindrot.org/show_bug.cgi?id=1654 --- Comment #4 from Vincent Fortier <vincent.fortier at canada.ca> --- If I can add, I just came accross a clear case where this feature is lacking for me which forces me to redirect to /dev/null: I need to access multiple hosts from various management networks accross multiple locations. Management IP are often the same at every location

https://bugzilla.mindrot.org/show_bug.cgi?id=2631 Bug ID: 2631 Summary: Hostkey update and rotation - No IP entries added to known_hosts Product: Portable OpenSSH Version: 7.3p1 Hardware: amd64 OS: Linux Status: NEW Severity: enhancement Priority: P5 Component: ssh

Hi Damien/all, Since github etc use a potentially large number of IP addresses (albeit with a small number of keys), I'd like more granular oversight over their entries in my known_hosts. Eg, here is a simplified stanza from my current ssh config: Host github gitlab User git Hostname %h.com UserKnownHostsFile ~/.ssh/known_hosts.d/git There doesn't seem to be a good way to filter only