search for: kex_exchange_identification

Displaying 13 results from an estimated 13 matches for "kex_exchange_identification".

2023 Jun 21
2
[Bug 3582] New: Confusing error message when using ProxyJump
...Example 1: (Connecting to an invalid host name) When connecting directly, the error message is clear: ssh: Could not resolve hostname invalid.tdl: Name or service not known But when using a jumpserver: channel 0: open failed: connect failed: Name or service not known stdio forwarding failed kex_exchange_identification: Connection closed by remote host Connection closed by UNKNOWN port 65535 Example 2: (sshd not running) Error message without Proxy: ssh: connect to host example.tdl port 22: Connection refused Error message with Proxy: ssh example.tdl channel 0: open failed: connect failed: Connection refu...
2024 Feb 08
12
[Bug 3666] New: sshd crash
...ly we are maintaining dunfell version openssh_8.2p1. Below is the error message we get. How can i resolve this issue? Could you please help here? sshd[27514]: Connection from UNKNOWN port 65535 on UNKNOWN port 65535 sshd[27514]: debug1: Local version string SSH-2.0-OpenSSH_8.2 sshd[27514]: error: kex_exchange_identification: Connection closed by remote host debug1: inetd sockets after dupping: 3, 4 bmt sshd[27580]: Connection from UNKNOWN port 65535 on UNKNOWN port 65535 debug1: Local version string SSH-2.0-OpenSSH_8.2 sshd[27580]: error: kex_exchange_identification: client sent invalid protocol identifier "...
2023 Mar 18
4
Minimize sshd log clutter/spam from unauthenticated connections
...se direct me to it. I haven't found anything in the archives. Any log messages including successful authentication and afterwards are still desired, so changing the log level to above INFO will not help. Additionally, even unauthenticated connections cause messages with levels ERROR ("kex_exchange_identification: Connection closed by remote host") or even CRITICAL ("Timeout before authentication"). As I periodically scan my hosts' syslogs for messages with level WARNING or above, I currently have to filter these messages to keep my inbox from overflowing. Thanks and best regards, Ca...
2024 Sep 06
8
[Bug 3729] New: the new sshd does not work under the supervision of inetd
...Severity: major Priority: P5 Component: sshd Assignee: unassigned-bugs at mindrot.org Reporter: khalid.outaali at nav-timing.safrangroup.com **Bug Description:** When attempting to connect via SSH, I consistently receive the following error message: ``` kex_exchange_identification: read: Connection reset by peer ``` This issue occurs **only when running `sshd` in inetd mode using the `-i` option** (either under `xinetd` or similar super-server configurations). However, when running the `sshd` service independently (via `sshd.service` under systemd or manually), connections...
2020 May 07
6
[Bug 3161] New: ssh -J <public IPv6> <LL IPv6%scopeID> doesn't work as expected
https://bugzilla.mindrot.org/show_bug.cgi?id=3161 Bug ID: 3161 Summary: ssh -J <public IPv6> <LL IPv6%scopeID> doesn't work as expected Product: Portable OpenSSH Version: 8.2p1 Hardware: 68k OS: Mac OS X Status: NEW Severity: enhancement Priority: P5
2024 Nov 21
2
[Bug 3755] New: ssh connection breaks after openssl is upgraded
...rter: gtapase at ddn.com On a el9.3 system, when openssl is upgraded from version 3.0.7-25.el9_3.x86_64 to 3.2.2-6.el9_5, it breaks ssh connection with sshd[39580]: OpenSSL version mismatch. Built against 30000070, you have 30200020 This causes the system to be unavailable for ssh connections. kex_exchange_identification: read: Connection reset by peer -- You are receiving this mail because: You are watching the assignee of the bug.
2024 Nov 21
0
[Bug 3756] New: ssh connection breaks after openssl is upgraded
...rter: gtapase at ddn.com On a el9.3 system, when openssl is upgraded from version 3.0.7-25.el9_3.x86_64 to 3.2.2-6.el9_5, it breaks ssh connection with sshd[39580]: OpenSSL version mismatch. Built against 30000070, you have 30200020 This causes the system to be unavailable for ssh connections. kex_exchange_identification: read: Connection reset by peer -- You are receiving this mail because: You are watching the assignee of the bug.
2024 Aug 30
0
ProxyJump: Connection reset by peer
...s say 15 seconds), the connection is restored. I have tried to debug the issue, but I'm not able to find the root cause. These are the logs, with inline excerpts of the most relevant parts: - local ssh client: https://dpaste.org/8ucke/raw debug1: Local version string SSH-2.0-OpenSSH_9.8 kex_exchange_identification: Connection closed by remote host Connection closed by UNKNOWN port 65535 - local ssh proxy command ([60bc::2]): https://dpaste.org/jxzZv/raw debug3: receive packet: type 91 debug2: channel_input_open_confirmation: channel 0: callback start debug2: channel_input_open_confirmation: channel...
2019 Nov 18
4
[Bug 3095] New: SSH CA-signed key fails when port forwarding
...com IdentityFile ~/.ssh/ssh-rsa-cert With this configuration, I can sign in to the bastion with ssh ssh.uswe2, but when I try to connect to the other server with ssh server2.uswe2 I get the following error: channel 0: open failed: administratively prohibited: open failed stdio forwarding failed kex_exchange_identification: Connection closed by remote host I can still connect directly to the server with ssh server2.uswe2.example.com over the public network though so I know that the CA and cert are being loaded correctly. My next thought was that maybe it was something to do with how the bastion is configured, but i...
2023 Mar 18
1
Minimize sshd log clutter/spam from unauthenticated connections
...39;t found anything in the > archives. > > Any log messages including successful authentication and afterwards are still > desired, so changing the log level to above INFO will not help. Additionally, > even unauthenticated connections cause messages with levels ERROR > ("kex_exchange_identification: Connection closed by remote host") or even > CRITICAL ("Timeout before authentication"). As I periodically scan my hosts' > syslogs for messages with level WARNING or above, I currently have to filter > these messages to keep my inbox from overflowing. > > Than...
2024 Jan 10
1
[Bug 3653] New: ConnectTimeout causes issue when connecting to an host via tsocks
...ssh/id_ed25519_sk-cert type -1 debug1: identity file /home/ago/.ssh/id_xmss type -1 debug1: identity file /home/ago/.ssh/id_xmss-cert type -1 debug1: identity file /home/ago/.ssh/id_dsa type -1 debug1: identity file /home/ago/.ssh/id_dsa-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_9.6 kex_exchange_identification: Connection closed by remote host Connection closed by 127.0.0.1 port 1080 Note that the three actors in this issue run OpenSSH_9.6p1, so since it worked for me in the recent past I started to think that was a recent issue with the OpenSSH_9.6p1 update (I was running 9.5 before), so I downgraded b...
2020 Feb 04
46
[Bug 3117] New: Tracking bug for 8.2 release
https://bugzilla.mindrot.org/show_bug.cgi?id=3117 Bug ID: 3117 Summary: Tracking bug for 8.2 release Product: Portable OpenSSH Version: -current Hardware: All OS: All Status: NEW Keywords: meta Severity: enhancement Priority: P5 Component: Miscellaneous Assignee:
2023 Aug 03
18
[Bug 3598] New: Dead lock of sshd and Defunct of sshd
https://bugzilla.mindrot.org/show_bug.cgi?id=3598 Bug ID: 3598 Summary: Dead lock of sshd and Defunct of sshd Product: Portable OpenSSH Version: 9.1p1 Hardware: ix86 OS: Linux Status: NEW Severity: normal Priority: P5 Component: sshd Assignee: unassigned-bugs at mindrot.org