All Questions
48
questions
0
votes
0
answers
16
views
kex_exchange_identification or banner exchange causing time out issue while ssh into amazon ec2
I am trying to ssh into a amazon linux 2023. My colleague can log in fine using the same private key. It seems like it initially connects then times out. This is the command and output:
% ssh -i my-...
- 131
10
votes
4
answers
23k
views
Error in libcrypto connecting RHEL 9 server to Centos 6 via SFTP/SSH
I am trying to connect from a new RHEL9 server to an older Centos 6 server to SFTP files from the older server to the new one for an upgrade, but when connecting from 9 to 6 I get the following error:
...
- 109
0
votes
0
answers
1k
views
Different SSH versions and behaviors, public key failing
I got 2 Ubuntu machines, a new A and old B. The ssh configuration files are identical, but versions are different, as expected:
→ ssh -v localhost
A:
OpenSSH_8.9p1 Ubuntu-3, OpenSSL 3.0.2 15 Mar 2022
...
- 103
0
votes
1
answer
501
views
Understanding SSH Public Key Auth Ciphers
I have a technical recommendation for SSH that states we should only use the following algorithms for Public Key authentication. Unfortunately the guide does not mention the exact names of ciphers as ...
- 17
0
votes
1
answer
1k
views
vagrant ssh fails with OpenSSL version mismatch
I've been troubleshooting an issue with Vagrant,
$ vagrant ssh
OpenSSL version mismatch. Built against 100020ef, you have 1000106f
$
but if I build the corresponding ssh command manually with the ...
- 366
1
vote
1
answer
4k
views
Upgrade to openssh 8.3 (server) on debian 10 buster
Have a fairly vanilla Debian Buster (10) latest stable.
PCI Scan (sysnet/qualsys/worldpay) shows a PCI Compliance = NO vulnerability identified as CVE-2019-16905 https://security-tracker.debian.org/...
- 135
1
vote
2
answers
5k
views
Generating ssh-keys not creating key in PKCS1 format
I am attempting to create a public/private key pair using ssh-keygen. I need the key to be in PKCS1 format so that it states "BEING RSA PRIVATE KEY". No matter what I try it appears to only ...
- 210
87
votes
17
answers
747k
views
What causes SSH error: kex_exchange_identification: Connection closed by remote host?
I setup a SSH server online that is publicly accessible by anyone. Therefore, I get a lot of connections from IPs all over the world. Weirdly, none actually try to authenticate to open a session.
I ...
- 972
0
votes
1
answer
1k
views
Auditing user activity when using SSH Certificates
I have been reading a lot lately on SSH Certificates and i love the advantages it brings.
Before investing time in building my own POC, i wanted to know how (if at all) would it be possible to audit ...
- 161
50
votes
3
answers
116k
views
ssh on windows - Corrupted MAC on input
I've installed OpenSSH on Windows.
I can successfully connect to my remote server via ssh with Putty from this Windows machine.
But when opening a PowerShell, and trying
ssh [email protected]
I've got ...
- 691
1
vote
3
answers
801
views
Accidentally unlinked /usr/lib/libcrypt.a. Is there a way to recover from this?
I have been upgrading OpenSSH and OpenSSL and I have accidentally deleted the file /usr/lib/libcrypt.a and now most features in AIX just doesn't work. Is back-up/restore the only way to recover from ...
- 11
0
votes
1
answer
1k
views
OpenSSL upgrade to 3.0.0 and now OpenSSH fails in AIX 7.1
I have recently upgraded the built-in OpenSSL to 3.0.0. All testing after upgrade was working fine but on reboot to finalize changes SFTP and SSH have failed to initiate. I was no longer able to re-...
- 11
1
vote
0
answers
3k
views
SFTP client connects, but stops at OpenSSH version
I have a weird situation which I have been unable to determine the root cause for. I have a service I need to connect via SFTP to on the internet. When connecting via SFTP this is what I see when ...
- 43
0
votes
1
answer
440
views
Setting up openssh-server never end
I've a really annoying issue that impeach to install any package with dpkg.
$ dpkg --configure -a
Setting up openssh-server (1:6.6p1-2ubuntu2.13) ...
...never end.
This is a remote server and I'm ...
- 101
0
votes
1
answer
242
views
Google Compute Engine Ubuntu - OpenSSL 1.1.1a
After performing apt-get upgrade on my Ubuntu 18.04.1 LTS server running on Google Compute Engine I was unable to connect to my server via the WEB SSH. The window is stuck with the following message:
...
google-compute-engine