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Questions tagged [sshd]

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the secure shell (SSH) daemon

756 questions
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38 votes
6 answers
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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 ...
user17090764's user avatar
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12 votes
2 answers
46k views

I have a server (running openssh 8.1p1-2) with sshd_config configured like this to accept only ed25519 keys: PubkeyAcceptedKeyTypes [email protected],ssh-ed25519 That works great for ...
tien nam's user avatar
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0 votes
1 answer
3k views

Updated openssh to sshd 8.1. Error connecting to server: sshd fatal: Access denied for user A by PAM account configuration [preauth] Configured ldap, authorization by key. I don't understand what's ...
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0 votes
2 answers
287 views

I am trying to monitor my laptop (Debian 8.7) when it is being used by someone else,I want to see what at any time people are running on my system & for this I'm trying to run a terminal command ...
karel's user avatar
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0 votes
1 answer
52 views

I have 2 users and their distinct ssh keys, and a ssh server only accepting keys user_1: a normal account with ssh and sftp accesses. Trusted. It can escape its home and download anything it can read....
Sandrew Cheru's user avatar
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1 vote
1 answer
2k views

Previously asked this question on askubuntu.com but I thought this is rather a general linux question so I'm asking here again: I'm having trouble "sshing" to localhost and getting a ...
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7 votes
2 answers
24k views

I am trying to run a program after enabling X windows port forwarding. My sshd_config file in /etc/ssh/sshd_config is configured such that: X11Forwarding yes X11DisplayOffset 10 X11UseLocalhost yes ...
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3 votes
2 answers
5k views

I am using Rocky Linux 8 and 9 and they use the crypto-policy framework from Red Hat. Now I want to adjust some settings in the policy to forbid sshd to use some specific algorithms. But I can not ...
Blake Mammen's user avatar
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6 votes
1 answer
5k views

I installed OpenSSH on my Windows 7 system so I could tunnel my VNC into it from my Arch machine. However, when I run /usr/sbin/sshd -D on the W7 machine, I get the error: /var/empty must be owned by ...
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0 votes
2 answers
2k views

On a server running SSH I need it to accept some legacy algorithms for 1 particular host for SSH so that I can copy files from the client to the server. I can't change the client side because its old ...
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3 votes
2 answers
28k views

I made the changes in /etc/security/limits.conf test hard maxlogins 2 sftptest hard maxlogins 2 After above entries I have tested below scenarios Open 2 putty sessions ...
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9 votes
2 answers
63k views

Apparently Fedora 35 does not list ssh-rsa in HostKeyAlgorithms or PubkeyAcceptedKeyTypes so trying to ssh from an old CentOS 6 machine yielded an error: $ ssh as1s16.intra.corp.us no hostkey alg So ...
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4 votes
1 answer
661 views

As the title says. Upgraded Bookworm > Trixie, and now ssh is hanging 10 seconds at login, via home local network, when it never used to. 2025-08-17T16:07:29.828339+10:00 debian sshd-session[4260]: ...
Tony Puryer's user avatar
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4 votes
1 answer
4k views

At this moment i have installed freeradius and PAM radius properly. When i create an account on the system and set a password in /etc/raddb/users.conf the user can login. Sudo also works great with ...
Community's user avatar
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1 vote
1 answer
2k views

I connect with my server via ssh and always it shows the last log: Last login: Sat Mar 19 14:05:17 2016 from... but that login is my actual login. What's the utility of this info? It should print the ...
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