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Questions tagged [known-hosts]

36 questions
138
votes
3 answers

Where does Putty store known_hosts information on Windows?

How do I tell if Putty already knows about and has cached credentials for specific ssh servers? Another way to ask this question is what is the Windows/Putty equivalent of a unix/ssh known_hosts file?
Hitesh
  • 3,111
94
votes
1 answer

How do I extract fingerprints from .ssh/known_hosts?

My laptop has a well-populated ~/.ssh/known_hosts file. I'd like to leverage that when connecting to remote hosts from my desktop, since tracking down the fingerprints can be a real chore. However, I can't seem to find a way to ask ssh-keygen or…
I answer wrong - have fun
  • 1,043
46
votes
2 answers

Configure ssh-key path to use for a specific host

When connecting via SSH my terminal wants to use id_rsa by default. I don't want to use that key for this particular server. So I am forced to specify the proper key path when connecting: This works to connect: ssh -i /Users/myuser/.ssh/mykey …
MastaP
  • 563
20
votes
1 answer

Differing SSH known_hosts formats

I've been having issues with my CI server's deployment lately due to the client (CI) rejecting the remote's host key (despite it being present in known_hosts). I was stumped until today, when I realized that SSH was saving host keys in a format that…
caseif
  • 303
16
votes
2 answers

SSH: known host with dynamic address

I need to connect to a host with a dynamic IP address. Every time its IP changes, SSH prompts me the fingerprint validation thing: The authenticity of host '...' can't be established. RSA key fingerprint is .... Are you sure you want to continue…
peoro
  • 1,171
14
votes
3 answers

SSH - How to add host to ssh/known_host file

The known_hosts file looks like this :- [localhost]:8001 ssh-dss AAAAB3NzaC1kc3MAAACBAP1/U4EddRIpU [10.18.60.198]:8001 ssh-dss AAAAB3NzaC1kc3MAAACBAP1/U4EddRIpUt9 // key are trimmed at the end This keys are added via Eclipse IDE, Want to know…
Tarun
  • 191
8
votes
2 answers

How to see the list of known hosts Ubuntu

When I sshed into a remote client, I got a warning : Warning: Permanently added 'xx.xx.xx.xx' (ECDSA) to the list of known hosts. Where can I see the list of known hosts? I tried cat ~/.ssh/known_hosts, but this returns data in some hashed form.…
Roshin Raphel
  • 203
6
votes
3 answers

What are the restrictions to ssh StrictHostKeyChecking=no?

When running ssh with StrictHostKeyChecking=no, it should always accept CHANGED keys. However it does not in my case. This is documented in the man page (ssh-config): StrictHostKeyChecking If this flag is set to yes, ssh(1) will never…
kuga
  • 161
  • 1
  • 1
  • 4
5
votes
0 answers

How to convert Putty registry entry to known_hosts format?

Using Putty, I connected to a remote host. As this was a first time me doing so, as expected, ssh key was added. Google helped me find registry entry, but it is not in a known_hosts format. How can I take that entry and transform it into the…
JAM
  • 489
4
votes
2 answers

Copying known_hosts between computers?

Connect to a server using OpenSSH_5.9p1 OpenSSL 1.0.1, and it stores a .ssh/known_hosts that's of the format: |1|wwwwwwwwwwwwwww=|wwwwwwwwww= ecdsa-sha2-nistp256 AAAAAAAAAA+AAAAA= Then copy that known_hosts file to another PC running OpenSSH_4.5p1…
OJW
  • 2,487
4
votes
3 answers

Can I use ssh host key verification with a round-robin DNS?

I'm logging into a server based on a round-robin DNS hostname -- "login.example.com" could go to any of a number of servers. Ideally, I'd like to be able to update my known_hosts file such that reaching any of the machines is possible without a…
Coderer
  • 1,700
4
votes
2 answers

How to add SSH known host to known host file on Windows?

The known_hosts file does not look trivial. On Windows I see it contains hostname, ip address and some RSA key. On linux I see it contains several keys separated by bar. Who manages this file on Windows? How to add some host as "known" to this file…
Dims
  • 13,414
3
votes
1 answer

known_hosts file doesn't get populated anymore

I had a populated known_hosts file. I was editing it and for a split second I saw a permission error when I saved it. I went to check what the error was and the known_hosts file was blank. Now if I ssh to a host I get something like the…
garg
  • 186
3
votes
1 answer

Is it ok if I deleted the known_hosts file from .ssh folder?

I set up SFTP server in my local PC (Windows 10) but I made a mistake and deleted the "known_hosts" and "known_hosts.old" file in ".ssh" folder. When I check Recycle Bin, only "known_hosts" exists. Is it ok if I deleted the known_hosts file? If I'm…
HuynhMinh
  • 33
3
votes
0 answers

What is this entry in my ssh known_hosts file?

I was taking a look at my ssh known_hosts file, and it only included 2 entries. The first line was the GitHub keys, so nothing weird there. However, the second line had a bunch of Chinese text, which I have no idea where it came from. I…
cruzazulini
  • 31
1
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