I'm trying to connect a Linux (CentOS 6.5 x64) server and another server, a Windows Server 2008 R2 running Cygwin, and transfer files daily via SSHD from Linux to Windows, and I will use public keys for authentication. The Windows server is recognized and is a know host in Linux SSH, but when I try to copy the Linux public key to Windows server via scp
command, it returns:
Connection closed by <host IP> lost connection`
In sshd_config
file, there's a line allowing connections as root (commented as default), I uncommented and remained the same. I tried turn off Windows Firewall, but not worked. Is something wrong with my Cygwin/SSHD settings, or Linux SSHD?
ssh -v
output:
ssh -v <Windows server user>@<Host IP>
OpenSSH_5.3p1, OpenSSL 1.0.1e-fips 11 Feb 2013
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to 192.168.1.23 [192.168.1.23] port 22.
debug1: Connection established.
debug1: permanently_set_uid: 0/0
debug1: identity file /root/.ssh/identity type -1
debug1: identity file /root/.ssh/identity-cert type -1
debug1: identity file /root/.ssh/id_rsa type 1
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1
debug1: match: OpenSSH_6.6.1 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.3
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: Host '192.168.1.23' is known and matches the RSA host key.
debug1: Found key in /root/.ssh/known_hosts:1
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Next authentication method: publickey
debug1: Trying private key: /root/.ssh/identity
debug1: Offering public key: /root/.ssh/id_rsa
Connection closed by <Host IP>
-v
option instead if using scp and see if you get any useful errors.ssh
output (resumed, the entire output is too long):debug1: Next authentication method: publickey debug1: Trying private key: /root/.ssh/identity debug1: Offering public key: /root/.ssh/id_rsa Connection closed by <host IP>
Once the port is opened, will be the same output. Looks like something only in the server.entire output is too long
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