After connecting through ssh immediately my connection is getting closed.
C:\WINDOWS>ssh -vvv 10.72.248.117 -l cyg_server OpenSSH_5.7p1, OpenSSL 0.9.8q 2 Dec 2010 debug2: ssh_connect: needpriv 0 debug1: Connecting to 10.72.248.117 [10.72.248.117] port 22. debug1: Connection established. debug1: permanently_set_uid: 0/0 Could not create directory '/home/sarkar/.ssh'. debug1: identity file /home/sarkar/.ssh/id_rsa type -1 debug1: identity file /home/sarkar/.ssh/id_rsa-cert type -1 debug1: identity file /home/sarkar/.ssh/id_dsa type -1 debug1: identity file /home/sarkar/.ssh/id_dsa-cert type -1 debug1: identity file /home/sarkar/.ssh/id_ecdsa type -1 debug1: identity file /home/sarkar/.ssh/id_ecdsa-cert type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.8 debug1: match: OpenSSH_5.8 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.7 debug2: fd 3 setting O_NONBLOCK debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug2: kex_parse_kexinit: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman- group-exchange-s ha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,dif fie-hellman-group1-sha1 debug2: kex_parse_kexinit: ecdsa-sha2-nistp256-cert-...@openssh.com,ecdsa-sha2-nistp384-cert-v01@op enssh.com,ecdsa- sha2-nistp521-cert-...@openssh.com,ssh-rsa-cert-...@openssh.com,ssh-dss- cert-...@openssh.com,ssh-rsa-cert-v00@opens sh.com,ssh-dss-cert-...@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp 384,ecdsa-sha2-nistp521,ssh-rsa,ssh-dss debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-c bc,blowfish-cbc, cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-...@lysator.liu.se debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-c bc,blowfish-cbc, cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-...@lysator.liu.se debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac...@openssh.com,hmac-ripemd160,hmac-ripemd160@ope nssh.com,hmac-sh a1-96,hmac-md5-96 debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac...@openssh.com,hmac-ripemd160,hmac-ripemd160@ope nssh.com,hmac-sh a1-96,hmac-md5-96 debug2: kex_parse_kexinit: none,z...@openssh.com,zlib debug2: kex_parse_kexinit: none,z...@openssh.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: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman- group-exchange-s ha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,dif fie-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-cbc,3des-c bc,blowfish-cbc, cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-...@lysator.liu.se debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-c bc,blowfish-cbc, cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-...@lysator.liu.se debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac...@openssh.com,hmac-ripemd160,hmac-ripemd160@ope nssh.com,hmac-sh a1-96,hmac-md5-96 debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac...@openssh.com,hmac-ripemd160,hmac-ripemd160@ope nssh.com,hmac-sh a1-96,hmac-md5-96 debug2: kex_parse_kexinit: none,z...@openssh.com debug2: kex_parse_kexinit: none,z...@openssh.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: sending SSH2_MSG_KEX_ECDH_INIT debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: Server host key: ECDSA fd:7e:e8:d3:c4:10:5d:74:1a:a1:f3:e2:c2:01:d5:3e The authenticity of host '10.72.248.117 (10.72.248.117)' can't be established. ECDSA key fingerprint is fd:7e:e8:d3:c4:10:5d:74:1a:a1:f3:e2:c2:01:d5:3e. Are you sure you want to continue connecting (yes/no)? yes Failed to add the host to the list of known hosts (/home/sarkar/.ssh/known_hosts). debug1: ssh_ecdsa_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/sarkar/.ssh/id_rsa (0x0) debug2: key: /home/sarkar/.ssh/id_dsa (0x0) debug2: key: /home/sarkar/.ssh/id_ecdsa (0x0) debug1: Authentications that can continue: publickey,password,keyboard-interactive debug3: start over, passed a different list publickey,password,keyboard-interactive 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/sarkar/.ssh/id_rsa debug3: no such identity: /home/sarkar/.ssh/id_rsa debug1: Trying private key: /home/sarkar/.ssh/id_dsa debug3: no such identity: /home/sarkar/.ssh/id_dsa debug1: Trying private key: /home/sarkar/.ssh/id_ecdsa debug3: no such identity: /home/sarkar/.ssh/id_ecdsa debug2: we did not send a packet, disable method debug3: authmethod_lookup keyboard-interactive debug3: remaining preferred: password debug3: authmethod_is_enabled keyboard-interactive debug1: Next authentication method: keyboard-interactive debug2: userauth_kbdint debug2: we sent a keyboard-interactive packet, wait for reply debug1: Authentications that can continue: publickey,password,keyboard-interactive debug3: userauth_kbdint: disable: no info_req_seen debug2: we did not send a packet, disable method debug3: authmethod_lookup password debug3: remaining preferred: debug3: authmethod_is_enabled password debug1: Next authentication method: password cyg_server@10.72.248.117's password: debug3: packet_send2: adding 48 (len 65 padlen 15 extra_pad 64) debug2: we sent a password packet, wait for reply debug1: Authentication succeeded (password). Authenticated to 10.72.248.117 ([10.72.248.117]:22). debug1: channel 0: new [client-session] debug3: ssh_session2_open: channel_new: 0 debug2: channel 0: send open debug1: Requesting no-more-sessi...@openssh.com debug1: Entering interactive session. debug2: callback start debug2: client_session2_setup: id 0 debug2: fd 3 setting TCP_NODELAY debug3: packet_set_tos: set IP_TOS 0x10 debug2: channel 0: request pty-req confirm 1 debug2: channel 0: request shell confirm 1 debug2: callback done debug2: channel 0: open confirm rwindow 0 rmax 32768 debug2: channel_input_status_confirm: type 99 id 0 debug2: PTY allocation request accepted on channel 0 debug2: channel 0: rcvd adjust 2097152 debug2: channel_input_status_confirm: type 99 id 0 debug2: shell request accepted on channel 0 Last login: Wed Feb 9 11:23:40 2011 from 10.73.26.6 debug1: client_input_channel_req: channel 0 rtype exit-status reply 0 debug1: client_input_channel_req: channel 0 rtype e...@openssh.com reply 0 debug2: channel 0: rcvd eow debug2: channel 0: close_read debug2: channel 0: input open -> closed debug2: channel 0: rcvd eof debug2: channel 0: output open -> drain debug2: channel 0: obuf empty debug2: channel 0: close_write debug2: channel 0: output drain -> closed debug2: channel 0: rcvd close debug3: channel 0: will not send data after close debug2: channel 0: almost dead debug2: channel 0: gc: notify user debug2: channel 0: gc: user detached debug2: channel 0: send close debug2: channel 0: is dead debug2: channel 0: garbage collecting debug1: channel 0: free: client-session, nchannels 1 debug3: channel 0: status: The following connections are open: #0 client-session (t4 r0 i3/0 o3/0 fd -1/-1 cc -1) Connection to 10.72.248.117 closed. Transferred: sent 2040, received 1648 bytes, in 2.3 seconds Bytes per second: sent 873.3, received 705.5 debug1: Exit status 1 C:\WINDOWS> -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple