Opened 5 years ago

Closed 5 years ago

#1368 closed help (fixed)

Problem with SSH into Puma

Reported by: ih280 Owned by: um_support
Component: PUMA Keywords:
Cc: Platform: PUMA
UM Version: <select version>

Description

Hello,

I am unable to login to PUMA from my work station with the following error message:

$ ssh -X ih280@…
ssh_exchange_identification: Connection closed by remote host

On another machine, I can establish a ssh connection. I have run ssh -v ih280@… on the two different machines and get the following output:
My workstation:

$ ssh -v ih280@puma.nerc.ac.uk
OpenSSH_5.9p1 Debian-5ubuntu1.4, OpenSSL 1.0.1 14 Mar 2012
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to puma.nerc.ac.uk [134.225.0.17] port 22.
debug1: Connection established.
debug1: identity file /home/ih280/.ssh/id_rsa type -1
debug1: identity file /home/ih280/.ssh/id_rsa-cert type -1
debug1: identity file /home/ih280/.ssh/id_dsa type -1
debug1: identity file /home/ih280/.ssh/id_dsa-cert type -1
debug1: identity file /home/ih280/.ssh/id_ecdsa type -1
debug1: identity file /home/ih280/.ssh/id_ecdsa-cert type -1
ssh_exchange_identification: Connection closed by remote host

The machine where I can login to PUMA:

$ ssh -v ih280@puma.nerc.ac.uk
OpenSSH_5.9p1 Debian-5ubuntu1.4, OpenSSL 1.0.1 14 Mar 2012
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to puma.nerc.ac.uk [134.225.0.17] port 22.
debug1: Connection established.
debug1: identity file /home/ih280/.ssh/id_rsa type -1
debug1: identity file /home/ih280/.ssh/id_rsa-cert type -1
debug1: identity file /home/ih280/.ssh/id_dsa type -1
debug1: identity file /home/ih280/.ssh/id_dsa-cert type -1
debug1: identity file /home/ih280/.ssh/id_ecdsa type -1
debug1: identity file /home/ih280/.ssh/id_ecdsa-cert type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.1
debug1: match: OpenSSH_5.1 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.9p1 Debian-5ubuntu1.4
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr hmac-md5 none
debug1: kex: client->server aes128-ctr hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Server host key: RSA 31:c3:fa:0c:b7:a3:55:ec:97:b0:aa:4d:64:68:60:ad
debug1: Host 'puma.nerc.ac.uk' is known and matches the RSA host key.
debug1: Found key in /home/ih280/.ssh/known_hosts:7
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: Roaming not allowed by server
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received

***************************** WARNING ******************************
This is a private computer facility.  Access for any reason must be
specifically authorized by the owner
********************************************************************

debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Next authentication method: publickey
debug1: Trying private key: /home/ih280/.ssh/id_rsa
debug1: Trying private key: /home/ih280/.ssh/id_dsa
debug1: Trying private key: /home/ih280/.ssh/id_ecdsa
debug1: Next authentication method: keyboard-interactive
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Next authentication method: password
ih280@puma.nerc.ac.uk's password: 

The two machines are different and I got this information from the University's local IT support:
From the machine where it does not work:

telnet puma.nerc.ac.uk 22
Trying 134.225.0.17...
Connected to puma.nerc.ac.uk.
Escape character is '^]'.
Connection closed by foreign host.

From the machine where the connection can be established:

telnet puma.nerc.ac.uk 22
Trying 134.225.0.17...
Connected to puma.nerc.ac.uk.
Escape character is '^]'.
SSH-2.0-OpenSSH_5.1

Please let me know, whether there is more information you need from me or the University's local IT support.

Thank you for your help.
Best wishes,
Ines

Change History (1)

comment:1 Changed 5 years ago by andy

  • Resolution set to fixed
  • Status changed from new to closed

Dear Ines,

You had got your password wrong ten or more times from the server 131.111.185.38 and so all logins were blocked from this server. I have now allowed the server access again.

Regards
Andy


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