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"Connection closed by remote host"

Hi guys,

When i try to do everything like push, pull or clone i always get this error:

"Connection to bitbucket.org closed by remote host."

I set up anything but i still can't user SSH.

Here is the "ssh -v git@bitbucket.org" output:

OpenSSH_8.4p1 Ubuntu-6ubuntu2.1, OpenSSL 1.1.1l 24 Aug 2021
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: include /etc/ssh/ssh_config.d/*.conf matched no files
debug1: /etc/ssh/ssh_config line 21: Applying options for *
debug1: Connecting to bitbucket.org [104.192.141.1] port 22.
debug1: Connection established.
debug1: identity file /home/medhit/.ssh/id_rsa type 0
debug1: identity file /home/medhit/.ssh/id_rsa-cert type -1
debug1: identity file /home/medhit/.ssh/id_dsa type -1
debug1: identity file /home/medhit/.ssh/id_dsa-cert type -1
debug1: identity file /home/medhit/.ssh/id_ecdsa type -1
debug1: identity file /home/medhit/.ssh/id_ecdsa-cert type -1
debug1: identity file /home/medhit/.ssh/id_ecdsa_sk type -1
debug1: identity file /home/medhit/.ssh/id_ecdsa_sk-cert type -1
debug1: identity file /home/medhit/.ssh/id_ed25519 type -1
debug1: identity file /home/medhit/.ssh/id_ed25519-cert type -1
debug1: identity file /home/medhit/.ssh/id_ed25519_sk type -1
debug1: identity file /home/medhit/.ssh/id_ed25519_sk-cert type -1
debug1: identity file /home/medhit/.ssh/id_xmss type -1
debug1: identity file /home/medhit/.ssh/id_xmss-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_8.4p1 Ubuntu-6ubuntu2.1
debug1: Remote protocol version 2.0, remote software version conker_7dc144d26a 619f72b56309
debug1: no match: conker_7dc144d26a 619f72b56309
debug1: Authenticating to bitbucket.org:22 as 'git'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256@libssh.org
debug1: kex: host key algorithm: rsa-sha2-512
debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ssh-rsa SHA256:zzXQOXSRBEiUtuE8AikJYKwbHaxvSc0ojez9YXaGp1A
debug1: Host 'bitbucket.org' is known and matches the RSA host key.
debug1: Found key in /home/medhit/.ssh/known_hosts:1
debug1: rekey out after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey in after 134217728 blocks
debug1: Will attempt key: /home/medhit/.ssh/id_rsa RSA SHA256:q+2j3LsaItXbg4jfEHTqt7vWH3JLzN4BVfqtAZZdiOo agent
debug1: Will attempt key: medhit@medhit-ThinkStation-P350 RSA SHA256:cdzCBMfl5BFlXKBkmriFKpjdY2AWXePjIlbUG8Fx+EY agent
debug1: Will attempt key: /home/medhit/.ssh/id_dsa
debug1: Will attempt key: /home/medhit/.ssh/id_ecdsa
debug1: Will attempt key: /home/medhit/.ssh/id_ecdsa_sk
debug1: Will attempt key: /home/medhit/.ssh/id_ed25519
debug1: Will attempt key: /home/medhit/.ssh/id_ed25519_sk
debug1: Will attempt key: /home/medhit/.ssh/id_xmss
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ecdsa-sha2-nistp256-cert-v01@openssh.com,ssh-rsa,rsa-sha2-256,ssh-dss,ssh-rsa-cert-v01@openssh.com,ssh-dss-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,rsa-sha2-512,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ecdsa-sha2-nistp384-cert-v01@openssh.com>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Offering public key: /home/medhit/.ssh/id_rsa RSA SHA256:q+2j3LsaItXbg4jfEHTqt7vWH3JLzN4BVfqtAZZdiOo agent
debug1: Server accepts key: /home/medhit/.ssh/id_rsa RSA SHA256:q+2j3LsaItXbg4jfEHTqt7vWH3JLzN4BVfqtAZZdiOo agent
debug1: Authentication succeeded (publickey).
Authenticated to bitbucket.org ([104.192.141.1]:22).
debug1: channel 0: new [client-session]
debug1: Entering interactive session.
debug1: pledge: network
debug1: Sending environment.
debug1: Sending env LANG = it_IT.UTF-8
debug1: channel 0: free: client-session, nchannels 1
Connection to bitbucket.org closed by remote host.
Transferred: sent 3188, received 2084 bytes, in 20.1 seconds
Bytes per second: sent 158.5, received 103.6
debug1: Exit status -1

1 answer

0 votes
Caroline R Atlassian Team Mar 04, 2022

Hi, @medhit, thank you for reaching out to Atlassian Community.

It's hard to say what's happening because there are roughly 20 lines of more verbose output missing that would tell us details about network settings that could potentially cause the connection to close. In this case, could you please share a verbose using -vvv with us? 

If you could also share the extra verbose output of a clone operation, this could help us to identify what is happening here. Just please remember to remove any private information before posting it here. 

For testing purposes, can you connect the device you are using to a different network, e.g. 4G, and see if you can connect to Bitbucket? And is the connection failing only when using the SSH method or is the same happens when you use the HTTPS as well? 

Thank you. 

Kind regards,
Caroline

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