After building -current on Feb 25, I noticed when I attempted to use S/Key remotely, that it was not a permitted authentication style. (I use S/Key when publc key authentication is not available, so it may have nothing to do with recent changes to how sshd_config Match works, and may be something else entirely, I have not used S/Key in a few weeks.)
Trying to recreate the problem, I ran sshd in debug mode, and ssh -vvv; it looks like the authentication method isn't viable. I'm hoping someone can quickly come to an "ah-hah!!" by looking at this output and my config files. If not, perhaps recreate the problem? (I used -p 222 to override the default port while collecting debug output.) debug1: private host key: #0 type 0 RSA1 debug1: read PEM private key done: type RSA debug1: private host key: #1 type 1 RSA debug1: read PEM private key done: type DSA debug1: private host key: #2 type 2 DSA debug1: rexec_argv[0]='/usr/sbin/sshd' debug1: rexec_argv[1]='-d' debug1: rexec_argv[2]='-p' debug1: rexec_argv[3]='222' debug1: Bind to port 222 on 0.0.0.0. Server listening on 0.0.0.0 port 222. Generating 768 bit RSA key. RSA key generation complete. debug1: fd 5 clearing O_NONBLOCK debug1: Server will not fork when running in debugging mode. debug1: rexec start in 5 out 5 newsock 5 pipe -1 sock 8 debug1: inetd sockets after dupping: 4, 4 Connection from 127.0.0.1 port 46616 debug1: Client protocol version 2.0; client software version OpenSSH_4.5 debug1: match: OpenSSH_4.5 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-1.99-OpenSSH_4.5 debug1: permanently_set_uid: 27/27 debug1: list_hostkey_types: ssh-rsa,ssh-dss debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: client->server aes128-cbc hmac-md5 none debug1: kex: server->client aes128-cbc hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST received debug1: SSH2_MSG_KEX_DH_GEX_GROUP sent debug1: expecting SSH2_MSG_KEX_DH_GEX_INIT debug1: SSH2_MSG_KEX_DH_GEX_REPLY sent debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: KEX done debug1: userauth-request for user j:skey service ssh-connection method none debug1: attempt 0 failures 0 Connection closed by 127.0.0.1 debug1: do_cleanup debug1: do_cleanup ---- ssh output ---- OpenSSH_4.5, OpenSSL 0.9.7j 04 May 2006 debug1: Reading configuration data /etc/ssh/ssh_config debug2: ssh_connect: needpriv 0 debug1: Connecting to localhost [127.0.0.1] port 222. debug1: Connection established. debug1: identity file /home/j/.ssh/identity type -1 debug1: identity file /home/j/.ssh/id_rsa type -1 debug1: identity file /home/j/.ssh/id_dsa type -1 debug1: Remote protocol version 1.99, remote software version OpenSSH_4.5 debug1: match: OpenSSH_4.5 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_4.5 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,ssh-dss debug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,[EMAIL PROTECTED],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,[EMAIL PROTECTED],aes128-ctr,aes192-ctr,aes256-ctr debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,[EMAIL PROTECTED],hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,[EMAIL PROTECTED],hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: none,[EMAIL PROTECTED],zlib debug2: kex_parse_kexinit: none,[EMAIL PROTECTED],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-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,[EMAIL PROTECTED],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,[EMAIL PROTECTED],aes128-ctr,aes192-ctr,aes256-ctr debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,[EMAIL PROTECTED],hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,[EMAIL PROTECTED],hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: none,[EMAIL PROTECTED] debug2: kex_parse_kexinit: none,[EMAIL PROTECTED] 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: 134/256 debug2: bits set: 517/1024 debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug3: put_host_port: [127.0.0.1]:222 debug3: put_host_port: [localhost]:222 debug3: check_host_in_hostfile: filename /home/j/.ssh/known_hosts debug3: check_host_in_hostfile: filename /etc/ssh/ssh_known_hosts debug1: checking without port identifier debug3: check_host_in_hostfile: filename /home/j/.ssh/known_hosts debug3: check_host_in_hostfile: match line 1 debug1: Host 'localhost' is known and matches the RSA host key. debug1: Found key in /home/j/.ssh/known_hosts:1 debug1: found matching key w/out port debug2: bits set: 516/1024 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: SSH2_MSG_SERVICE_REQUEST sent debug2: service_accept: ssh-userauth debug1: SSH2_MSG_SERVICE_ACCEPT received debug2: key: /home/j/.ssh/identity (0x0) debug2: key: /home/j/.ssh/id_rsa (0x0) debug2: key: /home/j/.ssh/id_dsa (0x0) debug1: Authentications that can continue: publickey debug3: start over, passed a different list publickey 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/j/.ssh/identity debug3: no such identity: /home/j/.ssh/identity debug1: Trying private key: /home/j/.ssh/id_rsa debug3: no such identity: /home/j/.ssh/id_rsa debug1: Trying private key: /home/j/.ssh/id_dsa debug3: no such identity: /home/j/.ssh/id_dsa debug2: we did not send a packet, disable method debug1: No more authentication methods to try. Permission denied (publickey). ---- sshd_config ---- # based on: # $OpenBSD: sshd_config,v 1.74 2006/07/19 13:07:10 dtucker Exp $ # local modifications: PermitRootLogin no PasswordAuthentication no ClientAliveInterval 15 ClientAliveCountMax 3 X11Forwarding yes AddressFamily inet # override default of no subsystems Subsystem sftp /usr/libexec/sftp-server ---- ssh_config ---- # this is: # $OpenBSD: ssh_config,v 1.22 2006/05/29 12:56:33 dtucker Exp $ # 100% comments.
