The following is a sanitized output from a connection problem I've encountered over the last couple of days. I'm not sure where this issue came from, is it worked Monday, but not last night. This is from a Fedora 9 host to many versions of Netscreen ScreenOS devices, as described in the debug. Can anybody help me find out what's going on from the below? Thanks, Jonathan $ ssh -vvvvv user@xxxxxxx OpenSSH_5.1p1, OpenSSL 0.9.8g 19 Oct 2007 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to 1.1.1.1 [1.1.1.1] port 22. debug1: Connection established. debug1: identity file /home/user/.ssh/identity type -1 debug1: identity file /home/user/.ssh/id_rsa type -1 debug3: Not a RSA1 key file /home/user/.ssh/id_dsa. debug2: key_type_from_name: unknown key type '-----BEGIN' debug3: key_read: missing keytype debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug2: key_type_from_name: unknown key type '-----END' debug3: key_read: missing keytype debug1: identity file /home/user/.ssh/id_dsa type 2 debug1: Remote protocol version 2.0, remote software version NetScreen debug1: no match: NetScreen debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.1 debug2: fd 3 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,ssh-dss debug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc@xxxxxxxxxxxxxx,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@xxxxxxxxxxxxxx,aes128-ctr,aes192-ctr,aes256-ctr debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@xxxxxxxxxxx,hmac-ripemd160,hmac-ripemd160@xxxxxxxxxxx,hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@xxxxxxxxxxx,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: diffie-hellman-group1-sha1 debug2: kex_parse_kexinit: ssh-dss debug2: kex_parse_kexinit: 3des-cbc debug2: kex_parse_kexinit: 3des-cbc debug2: kex_parse_kexinit: hmac-sha1 debug2: kex_parse_kexinit: hmac-sha1 debug2: kex_parse_kexinit: none debug2: kex_parse_kexinit: none 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-sha1 debug1: kex: server->client 3des-cbc hmac-sha1 none debug2: mac_setup: found hmac-sha1 debug1: kex: client->server 3des-cbc hmac-sha1 none debug2: dh_gen_key: priv key bits set: 176/384 debug2: bits set: 531/1024 debug1: sending SSH2_MSG_KEXDH_INIT debug1: expecting SSH2_MSG_KEXDH_REPLY debug3: check_host_in_hostfile: filename /home/user/.ssh/known_hosts debug3: check_host_in_hostfile: match line 5 debug1: Host '1.1.1.1' is known and matches the DSA host key. debug1: Found key in /home/user/.ssh/known_hosts:5 debug2: bits set: 496/1024 debug1: ssh_dss_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: SSH2_MSG_SERVICE_REQUEST sent debug2: service_accept: ssh-userauth debug1: SSH2_MSG_SERVICE_ACCEPT received debug2: key: /home/user/.ssh/id_dsa (0x7fc1f306f4f0) debug2: key: /home/user/.ssh/identity ((nil)) debug2: key: /home/user/.ssh/id_rsa ((nil)) debug1: Authentications that can continue: password debug3: start over, passed a different list password debug3: preferred publickey,keyboard-interactive,password debug3: authmethod_lookup password debug3: remaining preferred: ,keyboard-interactive,password debug3: authmethod_is_enabled password debug1: Next authentication method: password user@xxxxxxx's password: debug3: packet_send2: adding 56 (len 64 padlen 8 extra_pad 64) debug2: we sent a password packet, wait for reply debug1: Authentication succeeded (password). debug1: channel 0: new [client-session] debug3: ssh_session2_open: channel_new: 0 debug2: channel 0: send open debug1: Requesting no-more-sessions@xxxxxxxxxxx debug1: Entering interactive session. debug2: callback start debug2: client_session2_setup: id 0 debug2: channel 0: request pty-req confirm 1 debug3: tty_make_modes: ospeed 38400 debug3: tty_make_modes: ispeed 38400 debug1: Sending environment. debug3: Ignored env SSH_AGENT_PID debug3: Ignored env HOSTNAME debug3: Ignored env SHELL debug3: Ignored env TERM debug3: Ignored env DESKTOP_STARTUP_ID debug3: Ignored env HISTSIZE debug3: Ignored env XDG_SESSION_COOKIE debug3: Ignored env GTK_RC_FILES debug3: Ignored env WINDOWID debug3: Ignored env GTK_MODULES debug3: Ignored env USER debug3: Ignored env LS_COLORS debug3: Ignored env GNOME_KEYRING_SOCKET debug3: Ignored env SSH_AUTH_SOCK debug3: Ignored env SESSION_MANAGER debug3: Ignored env MAIL debug3: Ignored env PATH debug3: Ignored env DESKTOP_SESSION debug3: Ignored env INPUTRC debug3: Ignored env PWD debug1: Sending env LANG = en_US.UTF-8 debug2: channel 0: request env confirm 0 debug3: Ignored env GNOME_KEYRING_PID debug3: Ignored env GDM_LANG debug3: Ignored env GDMSESSION debug3: Ignored env SSH_ASKPASS debug3: Ignored env SHLVL debug3: Ignored env HOME debug3: Ignored env SDL_AUDIODRIVER debug3: Ignored env GNOME_DESKTOP_SESSION_ID debug3: Ignored env LOGNAME debug3: Ignored env DBUS_SESSION_BUS_ADDRESS debug3: Ignored env LESSOPEN debug3: Ignored env DISPLAY debug3: Ignored env G_BROKEN_FILENAMES debug3: Ignored env COLORTERM debug3: Ignored env XAUTHORITY debug3: Ignored env _ debug3: Ignored env OLDPWD debug2: channel 0: request shell confirm 1 debug2: fd 3 setting TCP_NODELAY debug2: callback done debug2: channel 0: open confirm rwindow 2048 rmax 1024 debug1: channel 0: free: client-session, nchannels 1 debug3: channel 0: status: The following connections are open: #0 client-session (t4 r16 i0/0 o0/0 fd 4/5 cfd -1) debug3: channel 0: close_fds r 4 w 5 e 6 c -1 Connection to 1.1.1.1 closed by remote host. Connection to 1.1.1.1 closed. Transferred: sent 1640, received 912 bytes, in 0.1 seconds Bytes per second: sent 15991.6, received 8892.9 debug1: Exit status -1 $