/dev/tty keeps changing permissions..?

[Thomas Park]

> -----Original Message-----
> From: Matthew D. Fuller [mailto:fullermd at over-yonder.net] 
> 
> On Mon, Jun 09, 2003 at 09:41:01AM -0700 I heard the voice of
> Thomas Park, and lo! it spake thus:
> > 
> > Interesting.  I have access to several FreeBSD 4.6 STABLE boxes, and
> > /dev/tty on each of them looks thusly:
> 
> 4.x doesn't have devfs, so /dev is static.  It's just 
> internally (in the
> kernel) that /dev/tty becomes 'dynamic' pointing to the 
> current tty.  In
> 5.x with devfs, it shows through in /dev.
> 


By God, I see that you're right!

I think the problem arises when I su into another account and try to ssh
outbound.  Which should arguably be possible without having to do arcane
manipulations to the tty device, IMHO..?

For example:

------------------
tpark 09:50:23 [~/drivespeed] ls -l /dev/tty
crw--w----  1 tpark  tty    5,   0 Jun  9 09:53 /dev/tty
tpark 09:56:39 [~/drivespeed] su - dspeed
Password:
dspeed 09:56:44 [~]
dspeed 09:56:44 [~] ssh host.com
Host key verification failed.
dspeed 09:57:04 [~] ssh drivespeed.com
Permission denied, please try again.
Permission denied, please try again.
Permission denied (publickey,password,keyboard-interactive).
------------------


And then the verbose version:

------------------
dspeed 09:57:11 [~] ssh -vv drivespeed.com
OpenSSH_3.6.1p2, SSH protocols 1.5/2.0, OpenSSL 0x0090702f
debug1: Reading configuration data /usr/etc/ssh_config
debug1: Rhosts Authentication disabled, originating port will not be
trusted.
debug2: ssh_connect: needpriv 0
debug1: Connecting to drivespeed.com [66.39.78.245] port 22.
debug1: Connection established.
debug1: identity file /home/dspeed/.ssh/identity type -1
debug1: identity file /home/dspeed/.ssh/id_rsa type -1
debug1: identity file /home/dspeed/.ssh/id_dsa type -1
debug1: Remote protocol version 1.99, remote software version
OpenSSH_3.5p1
debug1: match: OpenSSH_3.5p1 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_3.6.1p2
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-rsa,ssh-dss
debug2: kex_parse_kexinit:
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-c
bc,rijndael-cbc at lysator.liu.se
debug2: kex_parse_kexinit:
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-c
bc,rijndael-cbc at lysator.liu.se
debug2: kex_parse_kexinit:
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-9
6,hmac-md5-96
debug2: kex_parse_kexinit:
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-9
6,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-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit:
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-c
bc,rijndael-cbc at lysator.liu.se
debug2: kex_parse_kexinit:
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-c
bc,rijndael-cbc at lysator.liu.se
debug2: kex_parse_kexinit:
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-9
6,hmac-md5-96
debug2: kex_parse_kexinit:
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-9
6,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: 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 sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug2: dh_gen_key: priv key bits set: 117/256
debug2: bits set: 1571/3191
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Host 'drivespeed.com' is known and matches the RSA host key.
debug1: Found key in /home/dspeed/.ssh/known_hosts:9
debug2: bits set: 1560/3191
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
debug1: Authentications that can continue:
publickey,password,keyboard-interactive
debug1: Next authentication method: publickey
debug1: Trying private key: /home/dspeed/.ssh/identity
debug1: Trying private key: /home/dspeed/.ssh/id_rsa
debug1: Trying private key: /home/dspeed/.ssh/id_dsa
debug2: we did not send a packet, disable method
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
debug2: we did not send a packet, disable method
debug1: Next authentication method: password
debug2: we sent a password packet, wait for reply
debug1: Authentications that can continue:
publickey,password,keyboard-interactive
Permission denied, please try again.
debug2: we sent a password packet, wait for reply
debug1: Authentications that can continue:
publickey,password,keyboard-interactive
Permission denied, please try again.
debug2: we sent a password packet, wait for reply
debug1: Authentications that can continue:
publickey,password,keyboard-interactive
debug2: we did not send a packet, disable method
debug1: No more authentication methods to try.
Permission denied (publickey,password,keyboard-interactive).
debug1: Calling cleanup 0x805e170(0x0)
dspeed 09:57:36 [~]
------------------