Re: SSH fail to login due to hang over after authenticated.

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Hi Tanmay,

The server is not responsive for different accounts. But the client
can access different servers. Thus, I am sure it is something wrong in
server side. Since we can not login server for now, thus, we can not
check the error log in server. Do you have some clues to debug this
problem? Thanks for your help.

Best regards,
Jin

On Mon, Oct 24, 2016 at 11:22 AM, Tanmay Tiwari <tnmy44@xxxxxxxxx> wrote:
> Can you confirm if the problem is specific to the ssh client, or the ssh
> server? (Try to ssh into the same server from different client, and to some
> different server from the same client)
>
> On Mon, Oct 24, 2016 at 9:41 PM, Jin Li <lijin.abc@xxxxxxxxx> wrote:
>>
>> Hi OpenSSH,
>>
>> I encountered that SSH will hang over after I input the password.
>> Could you help show me how to resolve this problem? Thanks for your
>> help.
>>
>> Please find the ssh debug info and my ssh version as below.
>>
>> $ ssh -vvv user1@remote_host
>> OpenSSH_6.9p1, LibreSSL 2.1.8
>> debug1: Reading configuration data /Users/user1/.ssh/config
>> debug1: /Users/user1/.ssh/config line 36: Applying options for remote_host
>> debug1: Reading configuration data /etc/ssh/ssh_config
>> debug1: /etc/ssh/ssh_config line 20: Applying options for *
>> debug1: /etc/ssh/ssh_config line 102: Applying options for *
>> debug2: ssh_connect: needpriv 0
>> debug1: Connecting to remote_host port 22.
>> debug1: Connection established.
>> debug1: identity file /Users/user1/.ssh/id_rsa type 1
>> debug1: key_load_public: No such file or directory
>> debug1: identity file /Users/user1/.ssh/id_rsa-cert type -1
>> debug1: key_load_public: No such file or directory
>> debug1: identity file /Users/user1/.ssh/id_dsa type -1
>> debug1: key_load_public: No such file or directory
>> debug1: identity file /Users/user1/.ssh/id_dsa-cert type -1
>> debug1: key_load_public: No such file or directory
>> debug1: identity file /Users/user1/.ssh/id_ecdsa type -1
>> debug1: key_load_public: No such file or directory
>> debug1: identity file /Users/user1/.ssh/id_ecdsa-cert type -1
>> debug1: key_load_public: No such file or directory
>> debug1: identity file /Users/user1/.ssh/id_ed25519 type -1
>> debug1: key_load_public: No such file or directory
>> debug1: identity file /Users/user1/.ssh/id_ed25519-cert type -1
>> debug1: Enabling compatibility mode for protocol 2.0
>> debug1: Local version string SSH-2.0-OpenSSH_6.9
>> debug1: Remote protocol version 2.0, remote software version
>> OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.8
>> debug1: match: OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.8 pat OpenSSH_6.6.1*
>> compat 0x04000000
>> debug2: fd 3 setting O_NONBLOCK
>> debug1: Authenticating to remote_host as 'user1'
>> debug3: hostkeys_foreach: reading file "/Users/user1/.ssh/known_hosts"
>> debug3: record_hostkey: found key type ECDSA in file
>> /Users/user1/.ssh/known_hosts:3
>> debug3: load_hostkeys: loaded 1 keys from remote_host
>> debug3: order_hostkeyalgs: prefer hostkeyalgs:
>>
>> ecdsa-sha2-nistp256-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp384-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp521-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
>> debug1: SSH2_MSG_KEXINIT sent
>> debug1: SSH2_MSG_KEXINIT received
>> debug2: kex_parse_kexinit:
>>
>> curve25519-sha256@xxxxxxxxxx,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
>> debug2: kex_parse_kexinit:
>>
>> ecdsa-sha2-nistp256-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp384-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp521-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519-cert-v01@xxxxxxxxxxx,ssh-rsa-cert-v01@xxxxxxxxxxx,ssh-dss-cert-v01@xxxxxxxxxxx,ssh-rsa-cert-v00@xxxxxxxxxxx,ssh-dss-cert-v00@xxxxxxxxxxx,ssh-ed25519,ssh-rsa,ssh-dss
>> debug2: kex_parse_kexinit:
>>
>> chacha20-poly1305@xxxxxxxxxxx,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@xxxxxxxxxxx,aes256-gcm@xxxxxxxxxxx,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@xxxxxxxxxxxxxx
>> debug2: kex_parse_kexinit:
>>
>> chacha20-poly1305@xxxxxxxxxxx,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@xxxxxxxxxxx,aes256-gcm@xxxxxxxxxxx,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@xxxxxxxxxxxxxx
>> debug2: kex_parse_kexinit:
>>
>> umac-64-etm@xxxxxxxxxxx,umac-128-etm@xxxxxxxxxxx,hmac-sha2-256-etm@xxxxxxxxxxx,hmac-sha2-512-etm@xxxxxxxxxxx,hmac-sha1-etm@xxxxxxxxxxx,umac-64@xxxxxxxxxxx,umac-128@xxxxxxxxxxx,hmac-sha2-256,hmac-sha2-512,hmac-sha1,hmac-md5-etm@xxxxxxxxxxx,hmac-ripemd160-etm@xxxxxxxxxxx,hmac-sha1-96-etm@xxxxxxxxxxx,hmac-md5-96-etm@xxxxxxxxxxx,hmac-md5,hmac-ripemd160,hmac-ripemd160@xxxxxxxxxxx,hmac-sha1-96,hmac-md5-96
>> debug2: kex_parse_kexinit:
>>
>> umac-64-etm@xxxxxxxxxxx,umac-128-etm@xxxxxxxxxxx,hmac-sha2-256-etm@xxxxxxxxxxx,hmac-sha2-512-etm@xxxxxxxxxxx,hmac-sha1-etm@xxxxxxxxxxx,umac-64@xxxxxxxxxxx,umac-128@xxxxxxxxxxx,hmac-sha2-256,hmac-sha2-512,hmac-sha1,hmac-md5-etm@xxxxxxxxxxx,hmac-ripemd160-etm@xxxxxxxxxxx,hmac-sha1-96-etm@xxxxxxxxxxx,hmac-md5-96-etm@xxxxxxxxxxx,hmac-md5,hmac-ripemd160,hmac-ripemd160@xxxxxxxxxxx,hmac-sha1-96,hmac-md5-96
>> debug2: kex_parse_kexinit: none,zlib@xxxxxxxxxxx,zlib
>> debug2: kex_parse_kexinit: none,zlib@xxxxxxxxxxx,zlib
>> debug2: kex_parse_kexinit:
>> debug2: kex_parse_kexinit:
>> debug2: kex_parse_kexinit: first_kex_follows 0
>> debug2: kex_parse_kexinit: reserved 0
>> debug2: kex_parse_kexinit:
>>
>> curve25519-sha256@xxxxxxxxxx,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
>> debug2: kex_parse_kexinit: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256
>> debug2: kex_parse_kexinit:
>>
>> aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@xxxxxxxxxxx,aes256-gcm@xxxxxxxxxxx,chacha20-poly1305@xxxxxxxxxxx,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@xxxxxxxxxxxxxx
>> debug2: kex_parse_kexinit:
>>
>> aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@xxxxxxxxxxx,aes256-gcm@xxxxxxxxxxx,chacha20-poly1305@xxxxxxxxxxx,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@xxxxxxxxxxxxxx
>> debug2: kex_parse_kexinit:
>>
>> hmac-md5-etm@xxxxxxxxxxx,hmac-sha1-etm@xxxxxxxxxxx,umac-64-etm@xxxxxxxxxxx,umac-128-etm@xxxxxxxxxxx,hmac-sha2-256-etm@xxxxxxxxxxx,hmac-sha2-512-etm@xxxxxxxxxxx,hmac-ripemd160-etm@xxxxxxxxxxx,hmac-sha1-96-etm@xxxxxxxxxxx,hmac-md5-96-etm@xxxxxxxxxxx,hmac-md5,hmac-sha1,umac-64@xxxxxxxxxxx,umac-128@xxxxxxxxxxx,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@xxxxxxxxxxx,hmac-sha1-96,hmac-md5-96
>> debug2: kex_parse_kexinit:
>>
>> hmac-md5-etm@xxxxxxxxxxx,hmac-sha1-etm@xxxxxxxxxxx,umac-64-etm@xxxxxxxxxxx,umac-128-etm@xxxxxxxxxxx,hmac-sha2-256-etm@xxxxxxxxxxx,hmac-sha2-512-etm@xxxxxxxxxxx,hmac-ripemd160-etm@xxxxxxxxxxx,hmac-sha1-96-etm@xxxxxxxxxxx,hmac-md5-96-etm@xxxxxxxxxxx,hmac-md5,hmac-sha1,umac-64@xxxxxxxxxxx,umac-128@xxxxxxxxxxx,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@xxxxxxxxxxx,hmac-sha1-96,hmac-md5-96
>> debug2: kex_parse_kexinit: none,zlib@xxxxxxxxxxx
>> debug2: kex_parse_kexinit: none,zlib@xxxxxxxxxxx
>> debug2: kex_parse_kexinit:
>> debug2: kex_parse_kexinit:
>> debug2: kex_parse_kexinit: first_kex_follows 0
>> debug2: kex_parse_kexinit: reserved 0
>> debug1: kex: server->client chacha20-poly1305@xxxxxxxxxxx <implicit> none
>> debug1: kex: client->server chacha20-poly1305@xxxxxxxxxxx <implicit> none
>> debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
>> debug1: Server host key: ecdsa-sha2-nistp256
>> SHA256:EmPTWh360hkSprEQER26MTB5HcjJW6lGfmeFFMyRU2w
>> debug3: hostkeys_foreach: reading file "/Users/user1/.ssh/known_hosts"
>> debug3: record_hostkey: found key type ECDSA in file
>> /Users/user1/.ssh/known_hosts:3
>> debug3: load_hostkeys: loaded 1 keys from remote_host
>> debug3: hostkeys_foreach: reading file "/Users/user1/.ssh/known_hosts"
>> debug3: record_hostkey: found key type ECDSA in file
>> /Users/user1/.ssh/known_hosts:3
>> debug3: load_hostkeys: loaded 1 keys from 165.91.209.220
>> debug1: Host 'remote_host is known and matches the ECDSA host key.
>> debug1: Found key in /Users/user1/.ssh/known_hosts:3
>> debug2: set_newkeys: mode 1
>> debug1: SSH2_MSG_NEWKEYS sent
>> debug1: expecting SSH2_MSG_NEWKEYS
>> debug2: set_newkeys: mode 0
>> debug1: SSH2_MSG_NEWKEYS received
>> debug1: Roaming not allowed by server
>> debug1: SSH2_MSG_SERVICE_REQUEST sent
>> debug2: service_accept: ssh-userauth
>> debug1: SSH2_MSG_SERVICE_ACCEPT received
>> debug2: key: /Users/user1/.ssh/id_rsa (0x7ff939e000c0),
>> debug2: key: /Users/user1/.ssh/id_dsa (0x0),
>> debug2: key: /Users/user1/.ssh/id_ecdsa (0x0),
>> debug2: key: /Users/user1/.ssh/id_ed25519 (0x0),
>> debug3: input_userauth_banner
>> debug1: Authentications that can continue: publickey,password
>> debug3: start over, passed a different list publickey,password
>> debug3: preferred publickey,keyboard-interactive,password
>> debug3: authmethod_lookup publickey
>> debug3: remaining preferred: keyboard-interactive,password
>> debug3: authmethod_is_enabled publickey
>> debug1: Next authentication method: publickey
>> debug1: Offering RSA public key: /Users/user1/.ssh/id_rsa
>> debug3: send_pubkey_test
>> debug2: we sent a publickey packet, wait for reply
>>
>> $ ssh -V
>> OpenSSH_6.9p1, LibreSSL 2.1.8
>>
>> Best regards,
>> Jin
>> _______________________________________________
>> openssh-unix-dev mailing list
>> openssh-unix-dev@xxxxxxxxxxx
>> https://lists.mindrot.org/mailman/listinfo/openssh-unix-dev
>
>
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