https://bugzilla.mindrot.org/show_bug.cgi?id=3777
Bug ID: 3777
Summary: error: kex_exchange_identification: Connection closed
by remote host
Product: Portable OpenSSH
Version: 9.2p1
Hardware: amd64
OS: Linux
Status: NEW
Severity: normal
Priority: P5
Component: ssh
Assignee: unassigned-b...@mindrot.org
Reporter: jvishwanat...@gmail.com
The following error log has been continuously reported in
/var/log/auth.log
Dec 31 04:50:08 devnode-host sshd[19205]: error:
kex_exchange_identification: Connection closed by remote host
Dec 31 04:50:08 devnode-host sshd[19205]: Connection closed by
10.203.0.4 port 45196
Dec 31 04:50:21 devnode-host sshd[19277]: error:
kex_exchange_identification: Connection closed by remote host
Dec 31 04:50:21 devnode-host sshd[19277]: Connection closed by
10.203.0.4 port 45258
Dec 31 04:50:33 devnode-host sshd[19385]: error:
kex_exchange_identification: Connection closed by remote host
Dec 31 04:50:33 devnode-host sshd[19385]: Connection closed by
10.203.0.4 port 45294
Dec 31 04:50:44 devnode-host sshd[19458]: error:
kex_exchange_identification: Connection closed by remote host
Dec 31 04:50:44 devnode-host sshd[19458]: Connection closed by
10.203.0.4 port 45332
Dec 31 04:50:56 devnode-host sshd[19558]: error:
kex_exchange_identification: Connection closed by remote host
Dec 31 04:50:56 devnode-host sshd[19558]: Connection closed by
10.203.0.4 port 45374
OS:
Debian 12.8
Kernel:
6.6.68
List of SSH Packages
/home/admin# dpkg -l | grep "ssh"
ii libssh2-1:amd64 1.10.0-3+b1
amd64 SSH2 client-side library
ii openssh-client 1:9.2p1-2+deb12u3
amd64 secure shell (SSH) client, for secure access to remote
machines
ii openssh-server 1:9.2p1-2+deb12u3
amd64 secure shell (SSH) server, for secure access from remote
machines
ii openssh-sftp-server 1:9.2p1-2+deb12u3
amd64 secure shell (SSH) sftp server module, for SFTP access
from remote machines
ii python3-paramiko 2.12.0-2
all Make ssh v2 connections (Python 3)
ii ssh 1:9.2p1-2+deb12u3
all secure shell client and server (metapackage)
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