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ln -s /etc/rc.d/ /usr/etc/rc.d
cd /usr/ports/security/openssh-portable
make PREFIX=/usr ETCSSH=/etc/ssh install
To trace the work of the SSH daemon you may run in console of the server:
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/usr/sbin/sshd -ddd -p 65535
After that you will need to connect to the server using port 65535 from your PC.
Ones you do that in the console of the server you will see debug information of the SSH daemon's work. Something like that:
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# /usr/sbin/sshd -ddd -p 65535
debug2: load_server_config: filename /etc/ssh/sshd_config
debug2: load_server_config: done config len = 206
debug2: parse_server_config: config /etc/ssh/sshd_config len 206
debug3: /etc/ssh/sshd_config:19 setting Port 65321
debug3: /etc/ssh/sshd_config:28 setting Protocol 2
debug3: /etc/ssh/sshd_config:47 setting PermitRootLogin yes
debug3: /etc/ssh/sshd_config:119 setting Subsystem sftp /usr/libexec/sftp-server
debug1: sshd version OpenSSH_5.2p1 FreeBSD-openssh-portable-5.2.p1_2,1
debug3: Not a RSA1 key file /etc/ssh/ssh_host_rsa_key.
debug1: read PEM private key done: type RSA
debug1: private host key: #0 type 1 RSA
debug3: Not a RSA1 key file /etc/ssh/ssh_host_dsa_key.
debug1: read PEM private key done: type DSA
debug1: private host key: #1 type 2 DSA
debug1: rexec_argv[0]='/usr/sbin/sshd'
debug1: rexec_argv[1]='-ddd'
debug1: rexec_argv[2]='-p'
debug1: rexec_argv[3]='65535'
debug2: fd 3 setting O_NONBLOCK
debug1: Bind to port 65535 on 0.0.0.0.
Server listening on 0.0.0.0 port 65535.
debug1: fd 4 clearing O_NONBLOCK
debug1: Server will not fork when running in debugging mode.
debug3: send_rexec_state: entering fd = 7 config len 206
debug3: ssh_msg_send: type 0
debug3: send_rexec_state: done
debug1: rexec start in 4 out 4 newsock 4 pipe -1 sock 7
debug1: inetd sockets after dupping: 3, 3
debug1: res_init()
Connection from 217.144.69.37 port 35270
debug1: Client protocol version 2.0; client software version OpenSSH_5.3
debug1: match: OpenSSH_5.3 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.2p1 FreeBSD-openssh-portable-5.2.p1_2,1
debug2: fd 3 setting O_NONBLOCK
debug2: Network child is on pid 99047
debug3: preauth child monitor started
debug3: mm_request_receive entering
debug3: privsep user:group 22:22
debug1: permanently_set_uid: 22/22
debug1: list_hostkey_types: ssh-rsa,ssh-dss
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-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected]
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,[email protected]
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,[email protected],hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,[email protected],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: 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-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected]
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,[email protected]
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,[email protected],hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,[email protected],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: mac_setup: found hmac-md5
debug1: kex: client->server aes128-ctr hmac-md5 none
debug2: mac_setup: found hmac-md5
debug1: kex: server->client aes128-ctr hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST received
debug3: mm_request_send entering: type 0
debug3: mm_choose_dh: waiting for MONITOR_ANS_MODULI
debug3: mm_request_receive_expect entering: type 1
debug3: mm_request_receive entering
debug3: monitor_read: checking request 0
debug3: mm_answer_moduli: got parameters: 1024 1024 8192
debug3: mm_request_send entering: type 1
debug2: monitor_read: 0 used once, disabling now
debug3: mm_request_receive entering
debug3: mm_choose_dh: remaining 0
debug1: SSH2_MSG_KEX_DH_GEX_GROUP sent
debug2: dh_gen_key: priv key bits set: 125/256
debug2: bits set: 517/1024
debug1: expecting SSH2_MSG_KEX_DH_GEX_INIT
debug2: bits set: 515/1024
debug3: mm_key_sign entering
debug3: mm_request_send entering: type 4
debug3: mm_key_sign: waiting for MONITOR_ANS_SIGN
debug3: mm_request_receive_expect entering: type 5
debug3: mm_request_receive entering
debug3: monitor_read: checking request 4
debug3: mm_answer_sign
debug3: mm_answer_sign: signature 0x80183a150(271)
debug3: mm_request_send entering: type 5
debug2: monitor_read: 4 used once, disabling now
debug1: SSH2_MSG_KEX_DH_GEX_REPLY sent
debug3: mm_request_receive entering
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: KEX done
debug3: Trying to reverse map address 217.144.69.37.
debug1: userauth-request for user root service ssh-connection method none
debug1: attempt 0 failures 0
debug3: mm_getpwnamallow entering
debug3: mm_request_send entering: type 6
debug3: mm_getpwnamallow: waiting for MONITOR_ANS_PWNAM
debug3: mm_request_receive_expect entering: type 7
debug3: mm_request_receive entering
debug3: monitor_read: checking request 6
debug3: mm_answer_pwnamallow
debug3: Trying to reverse map address 217.144.69.37.
debug2: parse_server_config: config reprocess config len 206
debug3: mm_answer_pwnamallow: sending MONITOR_ANS_PWNAM: 1
debug3: mm_request_send entering: type 7
debug2: monitor_read: 6 used once, disabling now
debug3: mm_request_receive entering
debug2: input_userauth_request: setting up authctxt for root
debug3: mm_start_pam entering
debug3: mm_request_send entering: type 45
debug3: monitor_read: checking request 45
debug3: mm_inform_authserv entering
debug1: PAM: initializing for "root"
debug3: mm_request_send entering: type 3
debug2: input_userauth_request: try method none
debug1: PAM: setting PAM_RHOST to "zone3000.kharkov.ua"
debug2: monitor_read: 45 used once, disabling now
debug3: mm_request_receive entering
debug3: monitor_read: checking request 3
debug3: mm_answer_authserv: service=ssh-connection, style=
debug2: monitor_read: 3 used once, disabling now
debug3: mm_request_receive entering
debug1: userauth-request for user root service ssh-connection method publickey
debug1: attempt 1 failures 0
debug2: input_userauth_request: try method publickey
debug1: test whether pkalg/pkblob are acceptable
debug3: mm_key_allowed entering
debug3: mm_request_send entering: type 20
debug3: mm_key_allowed: waiting for MONITOR_ANS_KEYALLOWED
debug3: mm_request_receive_expect entering: type 21
debug3: mm_request_receive entering
debug3: monitor_read: checking request 20
debug3: mm_answer_keyallowed entering
debug3: mm_answer_keyallowed: key_from_blob: 0x801839440
debug1: trying public key file /root/.ssh/authorized_keys
debug1: fd 4 clearing O_NONBLOCK
debug3: secure_filename: checking '/root/.ssh'
debug3: secure_filename: checking '/root'
debug3: secure_filename: terminating check at '/root'
debug1: matching key found: file /root/.ssh/authorized_keys, line 1
Found matching RSA key: e5:9d:ed:f6:fa:7b:5f:ec:e1:6f:41:35:62:2a:8b:b3
debug3: mm_answer_keyallowed: key 0x801839440 is allowed
debug3: mm_request_send entering: type 21
debug3: mm_request_receive entering
debug2: userauth_pubkey: authenticated 0 pkalg ssh-rsa
Postponed publickey for root from 217.144.69.37 port 35270 ssh2
debug1: userauth-request for user root service ssh-connection method publickey
debug1: attempt 2 failures 0
debug2: input_userauth_request: try method publickey
debug3: mm_key_allowed entering
debug3: mm_request_send entering: type 20
debug3: mm_key_allowed: waiting for MONITOR_ANS_KEYALLOWED
debug3: mm_request_receive_expect entering: type 21
debug3: mm_request_receive entering
debug3: monitor_read: checking request 20
debug3: mm_answer_keyallowed entering
debug3: mm_answer_keyallowed: key_from_blob: 0x801839440
debug1: trying public key file /root/.ssh/authorized_keys
debug1: fd 4 clearing O_NONBLOCK
debug3: secure_filename: checking '/root/.ssh'
debug3: secure_filename: checking '/root'
debug3: secure_filename: terminating check at '/root'
debug1: matching key found: file /root/.ssh/authorized_keys, line 1
Found matching RSA key: e5:9d:ed:f6:fa:7b:5f:ec:e1:6f:41:35:62:2a:8b:b3
debug3: mm_answer_keyallowed: key 0x801839440 is allowed
debug3: mm_request_send entering: type 21
debug3: mm_request_receive entering
debug3: mm_key_verify entering
debug3: mm_request_send entering: type 22
debug3: mm_key_verify: waiting for MONITOR_ANS_KEYVERIFY
debug3: mm_request_receive_expect entering: type 23
debug3: monitor_read: checking request 22
debug3: mm_request_receive entering
debug1: ssh_rsa_verify: signature correct
debug3: mm_answer_keyverify: key 0x801839440 signature verified
debug3: mm_request_send entering: type 23
debug3: mm_request_receive_expect entering: type 46
debug2: userauth_pubkey: authenticated 1 pkalg ssh-rsa
debug3: mm_request_receive entering
debug3: mm_do_pam_account entering
debug3: mm_request_send entering: type 46
debug3: mm_request_receive_expect entering: type 47
debug3: mm_request_receive entering
debug1: do_pam_account: called
debug3: PAM: do_pam_account pam_acct_mgmt = 0 (success)
debug3: mm_request_send entering: type 47
Accepted publickey for root from 217.144.69.37 port 35270 ssh2
debug3: mm_do_pam_account returning 1
debug1: monitor_child_preauth: root has been authenticated by privileged process
debug3: mm_get_keystate: Waiting for new keys
debug3: mm_request_receive_expect entering: type 24
debug3: mm_request_receive entering
debug3: mm_send_keystate: Sending new keys: 0x80184a1a0 0x80184a040
debug3: mm_newkeys_to_blob: converting 0x80184a1a0
debug3: mm_newkeys_to_blob: converting 0x80184a040
debug3: mm_send_keystate: New keys have been sent
debug3: mm_send_keystate: Sending compression state
debug3: mm_request_send entering: type 24
debug3: mm_send_keystate: Finished sending state
debug3: mm_newkeys_from_blob: 0x801812900(122)
debug2: mac_setup: found hmac-md5
debug3: mm_get_keystate: Waiting for second key
debug3: mm_newkeys_from_blob: 0x801812900(122)
debug2: mac_setup: found hmac-md5
debug3: mm_get_keystate: Getting compression state
debug3: mm_get_keystate: Getting Network I/O buffers
debug3: mm_share_sync: Share sync
debug3: mm_share_sync: Share sync end
debug1: PAM: establishing credentials
debug3: PAM: opening session
debug2: set_newkeys: mode 0
debug2: set_newkeys: mode 1
debug1: Entering interactive session for SSH2.
debug2: fd 4 setting O_NONBLOCK
debug2: fd 5 setting O_NONBLOCK
debug1: server_init_dispatch_20
debug1: server_input_channel_open: ctype session rchan 0 win 1048576 max 16384
debug1: input_session_request
debug1: channel 0: new [server-session]
debug2: session_new: allocate (allocated 0 max 10)
debug3: session_unused: session id 0 unused
debug1: session_new: session 0
debug1: session_open: channel 0
debug1: session_open: session 0: link with channel 0
debug1: server_input_channel_open: confirm session
debug1: server_input_global_request: rtype [email protected] want_reply 0
debug1: server_input_channel_req: channel 0 request x11-req reply 0
debug1: session_by_channel: session 0 channel 0
debug1: session_input_channel_req: session 0 req x11-req
debug1: server_input_channel_req: channel 0 request pty-req reply 1
debug1: session_by_channel: session 0 channel 0
debug1: session_input_channel_req: session 0 req pty-req
debug1: Allocating pty.
debug1: session_pty_req: session 0 alloc /dev/ttyp0
debug1: Ignoring unsupported tty mode opcode 37 (0x25)
debug1: Ignoring unsupported tty mode opcode 52 (0x34)
debug1: Ignoring unsupported tty mode opcode 71 (0x47)
debug1: server_input_channel_req: channel 0 request shell reply 1
debug1: session_by_channel: session 0 channel 0
debug1: session_input_channel_req: session 0 req shell
debug2: fd 3 setting TCP_NODELAY
debug2: channel 0: rfd 8 isatty
debug2: fd 8 setting O_NONBLOCK
debug3: fd 6 is O_NONBLOCK
debug1: Setting controlling tty using TIOCSCTTY.
