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Date: Wed, 28 Jul 2010 16:50:31 -0700
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Subject: SSH Multiplexing - mux_client_request_session: read from master 	failed: Connection reset by peer
From: Dennis Ordanov <daodennis AT gmail DOT com>
To: cygwin AT cygwin DOT com
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Hi,

I'm trying to get SSH multiplexing on this very recent Cygwin install
and I get this error:

mux_client_request_session: read from master failed: Connection reset by peer

I found this info by searching the mailing list archives, but that was
back in 2005.  Maybe something has changed?

http://sourceware.org/ml/cygwin/2005-10/msg00672.html
http://sourceware.org/ml/cygwin/2005-11/msg00732.html


Anyone else see this or know how I can get around this?

Key-auth can be done on those hosts that it's feasible for all other
laziness I'll have to try to see if I can get this work....

Thanks Cygwin,

Dennis O.

Below is my -vvv output, anyone have any ideas

$ ssh root AT client DOT net -vvv
OpenSSH_5.5p1, OpenSSL 0.9.8o 01 Jun 2010
debug1: Reading configuration data /home/dennis/.ssh/config
debug1: Applying options for *
debug1: auto-mux: Trying existing master
debug2: fd 3 setting O_NONBLOCK
debug2: mux_client_hello_exchange: master version 4
debug3: mux_client_request_forwards: requesting forwardings: 0 local, 0 remote
debug3: mux_client_request_session: entering
debug3: mux_client_request_alive: entering
debug3: mux_client_request_alive: done pid = 8472
debug3: mux_client_request_session: session request sent
mux_client_request_session: read from master failed: Connection reset by peer
debug2: ssh_connect: needpriv 0
debug1: Connecting to client.net [209.197.69.2] port 22.
debug1: Connection established.
debug1: identity file /home/dennis/.ssh/id_rsa type -1
debug1: identity file /home/dennis/ssh/id_rsa-cert type -1
debug1: identity file /home/dennis/.ssh/id_dsa type -1
debug1: identity file /home/dennis/.ssh/id_dsa-cert type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_4.3
debug1: match: OpenSSH_4.3 pat OpenSSH_4*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.5
debug2: fd 4 setting O_NONBLOCK
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit:
diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit:
ssh-rsa-cert-v00 AT openssh DOT com,ssh-dss-cert-v00 AT openssh DOT com,ssh-rsa,ssh-dss
debug2: kex_parse_kexinit:
aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc AT lysator DOT liu DOT se
debug2: kex_parse_kexinit:
aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc AT lysator DOT liu DOT se
debug2: kex_parse_kexinit:
hmac-md5,hmac-sha1,umac-64 AT openssh DOT com,hmac-ripemd160,hmac-ripemd160 AT openssh DOT com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit:
hmac-md5,hmac-sha1,umac-64 AT openssh DOT com,hmac-ripemd160,hmac-ripemd160 AT openssh DOT com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib AT openssh DOT com,zlib
debug2: kex_parse_kexinit: none,zlib AT openssh DOT com,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:
diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit:
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc AT lysator DOT liu DOT se,aes128-ctr,aes192-ctr,aes256-ctr
debug2: kex_parse_kexinit:
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc AT lysator DOT liu DOT se,aes128-ctr,aes192-ctr,aes256-ctr
debug2: kex_parse_kexinit:
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 AT openssh DOT com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit:
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 AT openssh DOT com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib AT openssh DOT com
debug2: kex_parse_kexinit: none,zlib AT openssh DOT com
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug2: mac_setup: found hmac-md5
debug1: kex: server-client aes128-ctr hmac-md5 none
debug2: mac_setup: found hmac-md5
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
debug2: dh_gen_key: priv key bits set: 122/256
debug2: bits set: 509/1024
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug3: check_host_in_hostfile: host client.net filename
/home/dennis/.ssh/known_hosts
debug3: check_host_in_hostfile: host client.net filename
/home/dennis/.ssh/known_hosts
debug3: check_host_in_hostfile: match line 1
debug3: check_host_in_hostfile: host 209.197.69.2 filename
/home/dennis/.ssh/known_hosts
debug3: check_host_in_hostfile: host 209.197.69.2 filename
/home/dennis/.ssh/known_hosts
debug3: check_host_in_hostfile: match line 1
debug1: Host 'client.net' is known and matches the RSA host key.
debug1: Found key in /home/dennis/.ssh/known_hosts:1
debug2: bits set: 526/1024
debug1: ssh_rsa_verify: signature correct
debug2: kex_derive_keys
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: /home/dennis/.ssh/id_rsa (0x0)
debug2: key: /home/dennis/.ssh/id_dsa (0x0)
debug1: Authentications that can continue: publickey,gssapi-with-mic,password
debug3: start over, passed a different list publickey,gssapi-with-mic,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: Trying private key: /home/dennis/.ssh/id_rsa
debug3: no such identity: /home/dennis/.ssh/id_rsa
debug1: Trying private key: /home/dennis/.ssh/id_dsa
debug3: no such identity: /home/dennis/.ssh/id_dsa
debug2: we did not send a packet, disable method
debug3: authmethod_lookup password
debug3: remaining preferred: ,password
debug3: authmethod_is_enabled password
debug1: Next authentication method: password
root AT client DOT net's password:

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