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Questions tagged [sshd]

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the secure shell (SSH) daemon

756 questions
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743 votes
32 answers
1.4m views

I'm working from the URL I found here: http://web.archive.org/web/20160404025901/http://jaybyjayfresh.com/2009/02/04/logging-in-without-a-password-certificates-ssh/ My ssh client is Ubuntu 64 bit 11....
Thom's user avatar
  • 7,995
123 votes
2 answers
170k views

I am trying to code a shell-script that uses a ssh-connection for doing "heartbeats". I want to terminate the client- and server-side of that connection after a certain timeout (after the connection ...
Nils's user avatar
  • 18.6k
108 votes
2 answers
397k views

When I type in service sshd restart I get a sshd: unrecognized service error. I do have, in /etc/ssh/ a file sshd_config that I use to set config. I can also putty into the Ubuntu box (it is remote). ...
bharal's user avatar
  • 1,473
105 votes
5 answers
281k views

I can't find my sshd logs in the standard places. What I've tried: Not in /var/log/auth.log Not in /var/log/secure Did a system search for 'auth.log' and found nothing I've set /etc/ssh/sshd_config ...
HXCaine's user avatar
  • 1,277
73 votes
6 answers
306k views

How do we allow certain set of Private IPs to enter through SSH login(RSA key pair) into Linux Server?
Ranjan Kumar's user avatar
  • 939
71 votes
3 answers
135k views

I have a linux fedora21 client laptop behind a corporate firewall (which lets through http and https ports but not ssh 22) and I have a linux fedora21 server at home behind my own router. Browsing ...
MMM's user avatar
  • 835
60 votes
1 answer
36k views

The OpenSSH daemon has many "default" values for its settings. So looking at the sshd_config might not give someone the complete set of active settings. How to display the full sshd configuration (...
Huygens's user avatar
  • 9,895
46 votes
2 answers
115k views

Why does sshd require an absolute path when restarting, e.g /usr/sbin/sshd rather than sshd Are there any security implications? P.S the error message: # sshd sshd re-exec requires execution with ...
daisy's user avatar
  • 55.9k
43 votes
1 answer
4k views

Specifically, why are the first 25 characters of ssh Ed25519 public keys always the same? For example, if I make 5 keys with ssh-keygen -o -a 100 -t ed25519, the first 25 characters are always ...
Morris Cornell-Morgan's user avatar
  • 553
38 votes
6 answers
38k views

Summary: I'm trying to figure out why my tmux session dies when I disconnect from ssh Details: I have tmux installed on an Arch Linux system. When I start a tmux session I can detach from it and ...
Gabriel Southern's user avatar
  • 873
36 votes
6 answers
342k views

I have enabled X forwarding on remote machine where SSH server is running: # grep -i forward /etc/ssh/sshd_config X11Forwarding yes # On local machine, I have started SSH client with -X flag which ...
Martin's user avatar
  • 8,058
30 votes
3 answers
56k views

EDIT The issue as exposed here is solved (about files modes of the .ssh folder. But an other issue persists so I create a new question : > Unable to login with SSH-RSA key I can no longer ...
Rémi B.'s user avatar
  • 975
26 votes
3 answers
126k views

I'm trying to apply the same sshd settings to multiple users. According to the manual, it seems Match User acts like an AND: Introduces a conditional block. If all of the criteria on the Match line ...
IQAndreas's user avatar
  • 10.7k
22 votes
1 answer
25k views

I'm trying to SSH into my remote VPS with Debian onboard. Running sshd in debug mode, I found that: Authentication refused: bad ownership or modes for directory /root I tried setting permissions as I ...
keddad's user avatar
  • 663
22 votes
3 answers
48k views

in /etc/ssh/sshd_config, PAM is enabled by default on Debian 10: UsePAM yes In a situation when I don't want to allow login with password or kerberos, and only want to allow SSH key authentication, ...
Martin Vegter's user avatar
  • 878

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