Super User Stack Exchange
Super User Stack Exchange

Questions tagged [known-hosts]

36 questions
130
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
  • 2,971
  • 3
  • 16
  • 10
90
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…
Tim has moved to Codidact
  • 1,003
  • 1
  • 7
  • 8
35
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
  • 453
  • 1
  • 4
  • 5
17
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
  • 273
  • 1
  • 2
  • 6
15
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
  • 1,151
  • 9
  • 18
9
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
  • 141
  • 1
  • 1
  • 6
7
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
  • 193
  • 1
  • 1
  • 7
4
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
  • 439
  • 2
  • 6
  • 11
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
  • 2,117
  • 4
  • 17
  • 22
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
  • 1,578
  • 5
  • 19
  • 31
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
  • 13
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
3
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
  • 12,244
  • 78
  • 161
  • 252
2
votes
1 answer

Known hosts file keeps getting deleted

Have a weird issue where my known_hosts file is getting deleted periodically. Is there any way I can watch the file to see what may be deleting it? Any OSX logs that can be monitored to see what might be ditching it?
sgargan
  • 131
  • 1
  • 3
2
votes
1 answer

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
  • 121
  • 1
  • 4
1
2 3