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Server Fault

Questions tagged [ssh]

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Secure Shell (SSH) is a protocol primarily for encrypted shell connections. This tag is also used for questions about sshd and openssh, the two standard applications for using SSH.

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4votes
1answer
626views

How to distinguish sftp session in PAM?

I installed Debian 13 and lastlog2 to see when someone last logged in. Unfortunately, changes in Debian 13 mean that, unlike before, sftp logins are also included in the lastlog database. My goal is ...
Karol's user avatar
0votes
0answers
43views

why do my ssh connections keep timing out with `mux_client_request_session`?

I’ve been running into a frustrating issue with SSH connections lately and could use some advice or insight. When I SSH into a few of our servers, the connection drops with an error like:...
Roberto_1986's user avatar
0votes
0answers
74views

SSH (sometimes) hangs before logging in

I have a ssh server running (OpenSSH_9.9p2, OpenSSL 3.0.16 from freebsd, UseDNS set to no), but I sometimes randomly have issues logging in. As in, ssh doesn't even get to the auth state. What could ...
J. Aarts's user avatar
0votes
0answers
106views

smokeping: remote fping graph not updated

I'm running smokeping on my gateway. For direct pings (started from the gateway itself) all graphs work fine. They contain data.Yet if I use the RemoteFPing probe, the graphs stay empty (I waited a ...
Folkert van Heusden's user avatar
0votes
0answers
91views

fail2ban replacement for server behind NAT

I have a server with sshd running behind NAT(port forwarded via iptables through another server).All ssh connections from outside shown as connection from forwarding server IP.So fail2ban won't ...
Yuri Dolotkazin's user avatar
0votes
1answer
46views

SSHD drops connection after first successful login

I have an issue with sshd and connection drops. I can successfully ssh from my laptop to my cloud server once. After disconnecting and reconnecting my ssh logins are dropped. The only way to make it ...
32u-nd's user avatar
1vote
0answers
56views

SSH Python Script to Windows Server Connection

I am trying to connect to a Windows Server using SSH in a python script.I am able to connect with my username and password, but connecting with an SSH key fails with:Check username, key file path, ...
Safa Kashif-Naim's user avatar
1vote
1answer
89views

multiple login methods sshd_config

I have several Linux servers. Most are configured to only accept logins with SSH keys, but for some servers, I need to be able to log in with both key and user/pass. The problem is that users who use ...
4votes
1answer
178views

Understanding the ChallengeResponseAuthentication setting with PAM and login.conf

When using ChallengeResponseAuthentication, it is important to understand how it interacts with the Pluggable Authentication Modules (PAM) system and related configuration files.When ...
Seonglee's user avatar
4votes
1answer
399views

How to generate reproducible ssh key?

I want to set up a local docker dev environment for ansible (semaphore ui container) and a dev docker container for testing tasks.To avoid storing the ssh key somewhere I thought I create a ...
John Doe's user avatar
1vote
1answer
135views

Make a chain (Port forwarding) of local open ssh ports and open after on a new port

I have to to ssh connections (connected via ssh to two seperate servers) bind with option -D to port 1080 and 1081 on localhost.Now I want to make a chain so that the traffic first routes to port ...
JörgBanda's user avatar
1vote
1answer
40views

ssh key login does not work after enabling DISA STIGs

After enabling the STIGs, SSH keys have stopped working. You present the key and it still asks for a password. Things I've tried:Confirmed I'm using RSA with SHA2 which is acceptedConfirmed that ...
Grant Curell's user avatar
3votes
1answer
180views

How can I troubleshoot a systemd socket not connecting to ssh?

I have a user data script that changes the SSH port on an EC2 machine to 9000 to make way for a podman bastion container on port 22. This worked fine for several months, until today when it didn't. ...
lopass's user avatar
0votes
1answer
288views

ansible ssh remote login failing to google compute engine VM

Just starting to work with ansible.I have a private ssh key on my local system, and a public ssh key in ~/.ssh/authorized_keys on the remote host.For test purposes, I have set the following ...
1vote
0answers
35views

Can't figure out the good ssh config via a jump host (ProxyJump) with private key only on the jump host

ASCII representation of the workflow[Local Machine] | | SSH ProxyJump / ProxyCommand v ----------------- | Jump Host | <- Private key here | xxx | ------...
Gilles Quénot's user avatar

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