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From: giuseppe <atirairam18 AT libero DOT it>
Subject:  Re: sshd problems
Date: Sat, 16 Apr 2005 09:16:36 +0000 (UTC)
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dear larry
thanks  a lot for your answer;
I don't understand very well your suggestion:

I wrote:
-$ nedit .ssh/known_hosts
-
-here I canceled lines rlative to cygwin machine and tried again:
-
-$ ssh user@***************
-ssh: connect to host ************ port 22: Connection timed out
-$ ssh user@***************
-ssh: connect to host ************ port 22: Connection timed out
-$
-
-Please, have you got any idea???

You answered:

"Is sshd still running? If you were running 
it in debug mode, it won't be
now. Restart it. If it is running, I suggest 
stopping it and adding
debug flags (-d -d -d) to the sshd service 
and restarting. This will
generate debug information in the log that 
should be helpful."

-Yes sshd was running(i also tried today)
I do not understand te secon suggestion(I'm not 
an expert):
how can I know I'm running sshd in debug mode?
how do I add debug flags to the service?



Anyway i got some debug info in another way(-v flag):

here I try ssh from cygwin machine to itself:

ssh -v localhost
OpenSSH_4.0p1, OpenSSL 0.9.7f 22 mar  2005
debug1: Reading configuration data /etc/ssh_config
debug1: Connecting to localhost [127.0.0.1] port 22.
debug1: Connection established.
debug1: identity file /home/user/.ssh/identity type -1
debug1: identity file /home/user/.ssh/id_rsa type -1
debug1: identity file /home/user/.ssh/id_dsa type -1
debug1: Remote protocol version 1.99, remote software 
version OpenSSH_4.0
debug1: match: OpenSSH_4.0 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_4.0
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-cbc hmac-md5 none
debug1: kex: client->server aes128-cbc 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 'localhost' is known and matches the 
RSA host key.
debug1: Found key in /home/user/.ssh/known_hosts:2
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: /home/user/.ssh/identity
debug1: Trying private key: /home/user/.ssh/id_rsa
debug1: Trying private key: /home/user/.ssh/id_dsa
debug1: Next authentication method: keyboard-interactive
debug1: Authentications that can continue: publickey,
password,keyboard-interactive
debug1: Next authentication method: password
user AT localhost's password:
debug1: Authentication succeeded (password).
debug1: channel 0: new [client-session]
debug1: Entering interactive session.
Last login: **************** from *************



that's what happens when I try ssh from 
linux machine (LM)  to the cygwin machine(CM)

ssh  -v user AT ip_cgwin machine
OpenSSH_3.9p1, OpenSSL 0.9.7a Feb 19 2003
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to ip_cgwin machine 
[ip_cgwin machine] port 22.
debug1: connect to address ip_cgwin machine port 22: 
Connection timed out
ssh: connect to host ip_cgwin machine port 22: 
Connection timed out

I also add the ssh from the CM to ip_CM

ssh -v ip_cgwin machine
OpenSSH_4.0p1, OpenSSL 0.9.7f 22 mar  2005
debug1: Reading configuration data /etc/ssh_config
debug1: Connecting to ip_cgwin machine [ip_cgwin machine] 
port 22.
debug1: Connection established.
debug1: identity file /home/user/.ssh/identity type -1
debug1: identity file /home/user/.ssh/id_rsa type -1
debug1: identity file /home/user/.ssh/id_dsa type -1
debug1: Remote protocol version 1.99, remote software 
version OpenSSH_4.0
debug1: match: OpenSSH_4.0 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_4.0
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-cbc hmac-md5 none
debug1: kex: client->server aes128-cbc 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 'ip_cygwin_machine' is known and matches 
the RSA host key.
debug1: Found key in /home/user/.ssh/known_hosts:3
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: /home/user/.ssh/identity
debug1: Trying private key: /home/user/.ssh/id_rsa
debug1: Trying private key: /home/user/.ssh/id_dsa
debug1: Next authentication method: 
keyboard-interactive
debug1: Authentications that can continue: publickey,
password,keyboard-interactive
debug1: Next authentication method: password
user AT ip_cygwin_machine password:
debug1: Authentication succeeded (password).
debug1: channel 0: new [client-session]
debug1: Entering interactive session.
Last login: **************** from *************



I also add the ssh from the CM to LM:


ssh -v ip_LM
OpenSSH_4.0p1, OpenSSL 0.9.7f 22 mar  2005
debug1: Reading configuration data /etc/ssh_config
debug1: Connecting to ip_LM [ip_LM] port 22.
debug1: Connection established.
debug1: identity file /home/user/.ssh/identity type -1
debug1: identity file /home/user/.ssh/id_rsa type -1
debug1: identity file /home/user/.ssh/id_dsa type -1
debug1: Remote protocol version 1.99, remote software 
version OpenSSH_3.9p1
debug1: match: OpenSSH_3.9p1 pat OpenSSH_3.*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_4.0
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-cbc hmac-md5 none
debug1: kex: client->server aes128-cbc 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 'ip_LM' is known and matches the RSA 
host key.
debug1: Found key in /home/user/.ssh/known_hosts:4
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,
gssapi-with-mic,password
debug1: Next authentication method: publickey
debug1: Trying private key: /home/user/.ssh/identity
debug1: Trying private key: /home/user/.ssh/id_rsa
debug1: Trying private key: /home/user/.ssh/id_dsa
debug1: Next authentication method: password
*****@ip_LM password:
debug1: Authentication succeeded (password).
debug1: channel 0: new [client-session]
debug1: Entering interactive session.
Last login: **************** from *************

what do you think? 
why ssh does not work fine as server on CM?
ssh works fine on LM both as client that as server  
(I proved it several times with other LM).
other LM can't connect to CM via ssh too.
Of course i can give other information if you need it.
thans again
best regards

giuseppe


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