Cant login using ssh; no password prompt

Ansar Mohammed ansarm at gmail.com
Fri Nov 18 15:01:51 GMT 2005


Greetings Mauricio,
I have gotten this problem lots o times with new installs of FreeBSD. 

SSH times out trying to do a reverse lookup on the IP connecting to it. This
is not a FreeBSD problem but an OpenSSH "issue"(not really an issue).
My solution has always been to point the FreeBSD machine to an internal DNS
server that has both the FreeBSD machine and the client's name->IP address
mapping in DNS.

So check your /etc/resolv.conf and see what entries you are using. If you
are using 127.0.0.1 and you don't have DNS running locally then that can be
your problem. 

Good luck!


> -----Original Message-----
> From: owner-freebsd-questions at freebsd.org [mailto:owner-freebsd-
> questions at freebsd.org] On Behalf Of Mauricio Brunstein
> Sent: November 18, 2005 9:50 AM
> To: freebsd-questions at freebsd.org
> Subject: Cant login using ssh; no password prompt
> 
> Hi!
> 
> I've installed a new box with FreeBSD 6.0 (workbench) and cant login
> to it by means of ssh from the internal or external network. The box
> is installed from the release version, and worked fine using the
> console. I also had accessed other hosts form there using ssh. I did
> not patch the box in any way, is just the 6.0 release version. I can
> not login to that box form a local OpenBSD 3.7 box, a 5.4 box (as
> shown below) or using putty 0.57 from the Internet (the putty window
> closes after some time without asking me for a password) .
> 
> Anybody have and idea of what could be happening?
> 
> Thank you in advance,
> Mauro
> 
> Form a 5.4 Box,
> 
> mauro at Server:~> uname -a
> FreeBSD Server.blstar 5.4-RELEASE-p8 FreeBSD 5.4-RELEASE-p8 #0: Sun
> Oct 16 04:00:03 ART 2005     mauro@:/usr/obj/usr/src/sys/GENERIC  i386
> 
> I issue the following command:
> 
> mauro at Server:~> ssh -vvv workbench
> OpenSSH_3.8.1p1 FreeBSD-20040419, OpenSSL 0.9.7e-p1 25 Oct 2004
> debug1: Reading configuration data /etc/ssh/ssh_config
> debug2: ssh_connect: needpriv 0
> debug1: Connecting to workbench.blstar [192.168.1.34] port 22.
> debug1: Connection established.
> debug1: identity file /home/mauro/.ssh/identity type -1
> debug1: identity file /home/mauro/.ssh/id_rsa type -1
> debug1: identity file /home/mauro/.ssh/id_dsa type -1
> debug1: Remote protocol version 2.0, remote software version
> OpenSSH_4.2p1 FreeBSD-20050903
> debug1: match: OpenSSH_4.2p1 FreeBSD-20050903 pat OpenSSH*
> debug1: Enabling compatibility mode for protocol 2.0
> debug1: Local version string SSH-2.0-OpenSSH_3.8.1p1 FreeBSD-20040419
> debug1: SSH2_MSG_KEXINIT sent
> debug1: SSH2_MSG_KEXINIT received
> debug2: kex_parse_kexinit:
> diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
> debug2: kex_parse_kexinit: ssh-dss,ssh-rsa
> debug2: kex_parse_kexinit:
> aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-
> cbc,rijndael-cbc at lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr
> debug2: kex_parse_kexinit:
> aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-
> cbc,rijndael-cbc at lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr
> debug2: kex_parse_kexinit:
> hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-
> 96,hmac-md5-96
> debug2: kex_parse_kexinit:
> hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-
> 96,hmac-md5-96
> debug2: kex_parse_kexinit: none,zlib
> debug2: kex_parse_kexinit: none,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-dss
> debug2: kex_parse_kexinit:
> aes128-cbc,3des-cbc,blowfish-cbc,cast128-
> cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-
> cbc at lysator.liu.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.liu.se,aes128-ctr,aes192-ctr,aes256-ctr
> debug2: kex_parse_kexinit:
> hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-
> 96,hmac-md5-96
> debug2: kex_parse_kexinit:
> hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-
> 96,hmac-md5-96
> debug2: kex_parse_kexinit: none,zlib at openssh.com
> debug2: kex_parse_kexinit: none,zlib at 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_init: found hmac-md5
> debug1: kex: server->client aes128-cbc hmac-md5 none
> debug2: mac_init: found hmac-md5
> 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
> debug2: dh_gen_key: priv key bits set: 129/256
> debug2: bits set: 536/1024
> debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
> debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
> debug3: check_host_in_hostfile: filename /home/mauro/.ssh/known_hosts
> debug3: check_host_in_hostfile: match line 3
> debug1: Host 'workbench.blstar' is known and matches the DSA host key.
> debug1: Found key in /home/mauro/.ssh/known_hosts:3
> debug2: bits set: 497/1024
> 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/mauro/.ssh/identity (0x0)
> debug2: key: /home/mauro/.ssh/id_rsa (0x0)
> debug2: key: /home/mauro/.ssh/id_dsa (0x0)
> debug1: Authentications that can continue: publickey,keyboard-interactive
> debug3: start over, passed a different list publickey,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/mauro/.ssh/identity
> debug3: no such identity: /home/mauro/.ssh/identity
> debug1: Trying private key: /home/mauro/.ssh/id_rsa
> debug3: no such identity: /home/mauro/.ssh/id_rsa
> debug1: Trying private key: /home/mauro/.ssh/id_dsa
> debug3: no such identity: /home/mauro/.ssh/id_dsa
> 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
> Connection closed by 192.168.1.34
> mauro at Server:~>
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