ファームウェア Ver.1.42 へ ssh

LS-VL の sshd_config の修正

標準ファームの HDD を LS-QL に USB で接続

root@qube:~# tail -f /var/log/messages
	:
	:
Jun 16 21:17:33 qube kernel: usb 1-1: new high speed USB device using ehci_marvell and address 2
Jun 16 21:17:34 qube kernel: usb 1-1: configuration #1 chosen from 1 choice
Jun 16 21:17:34 qube kernel: scsi2 : SCSI emulation for USB Mass Storage devices
Jun 16 21:17:39 qube kernel: scsi 2:0:0:0: Direct-Access     ViPowER  VP-89118(SD1)    2.10 PQ: 0 ANSI: 4
Jun 16 21:17:39 qube kernel: sd 2:0:0:0: [sdc] 488283264 512-byte hardware sectors (250001 MB)
Jun 16 21:17:39 qube kernel: sd 2:0:0:0: [sdc] Write Protect is off
Jun 16 21:17:39 qube kernel: sd 2:0:0:0: [sdc] 488283264 512-byte hardware sectors (250001 MB)
Jun 16 21:17:39 qube kernel: sd 2:0:0:0: [sdc] Write Protect is off
Jun 16 21:17:39 qube kernel: sdc: sdc1 sdc2 sdc3 sdc4 sdc5 sdc6
Jun 16 21:17:39 qube kernel: sd 2:0:0:0: [sdc] Attached SCSI disk
Jun 16 21:17:39 qube kernel: sd 2:0:0:0: Attached scsi generic sg2 type 0

マウントする

root@qube:~# mkdir /tmp/root
root@qube:~# mount /dev/sdc2 /tmp/root
root@qube:~# ls /tmp/root
bin  boot  dev  etc  home  initrd  lib  lost+found  mnt  proc  root  sbin  sys  tmp  usr  var  www
root@qube:~#

sshd_config の編集

root@qube:~# cd /tmp/root/etc/
root@qube:/tmp/root/etc# mv sshd_config{,.orig}
root@qube:/tmp/root/etc# cp sshd_config{.orig,}
root@qube:/tmp/root/etc# vi sshd_config
	:
	:
root@qube:/tmp/root/etc# !cp:s/cp/diff -u/
diff -u sshd_config{.orig,}
--- sshd_config.orig    2010-07-28 20:54:51.000000000 +0900
+++ sshd_config 2011-06-16 21:19:42.000000000 +0900
@@ -20,7 +20,7 @@
 # HostKeys for protocol version 2
 #HostKey /etc/ssh_host_rsa_key
 #HostKey /etc/ssh_host_dsa_key
-HostKey /etc/apache/server.key
+#HostKey /etc/apache/server.key

 # Lifetime and size of ephemeral version 1 server key
 #KeyRegenerationInterval 1h
@@ -35,7 +35,7 @@

 #LoginGraceTime 2m
 #PermitRootLogin yes
-PermitRootLogin no
+PermitRootLogin yes
 #StrictModes yes

 #RSAAuthentication yes
@@ -55,6 +55,7 @@
 # To disable tunneled clear text passwords, change to no here!
 #PasswordAuthentication yes
 #PermitEmptyPasswords no
+PermitEmptyPasswords yes

 # Change to no to disable s/key passwords
 #ChallengeResponseAuthentication yes
@@ -71,7 +72,7 @@
 # Set this to 'yes' to enable PAM authentication (via challenge-response)
 # and session processing. Depending on your PAM configuration, this may
 # bypass the setting of 'PasswordAuthentication'
-UsePAM yes
+UsePAM no

 #AllowTcpForwarding yes
 #GatewayPorts no
root@qube:/tmp/root/etc#

shadow の確認

root@qube:/tmp/root/etc# grep root shadow
root::14895:0:99999:7:::
root@qube:/tmp/root/etc#

アンマウント

root@qube:/tmp/root/etc# cd /
root@qube:/# sync
root@qube:/# sync
root@qube:/# sync
root@qube:/# umount /tmp/root
root@qube:/#

LS-XHL の sshd_config の修正

HDD を LS-VL に戻す

LS-VL を起動

LS-VL に ssh

yasunari@sil:~$ ssh -l root vl
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that the RSA host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
e2:24:93:d6:92:f0:20:92:39:7a:67:ff:97:38:71:b2.
Please contact your system administrator.
Add correct host key in /home/yamasita/yasunari/.ssh/known_hosts to get rid of this message.
Offending key in /home/yamasita/yasunari/.ssh/known_hosts:1
RSA host key for vl has changed and you have requested strict checking.
Host key verification failed.
yasunari@sil:~$ rm -fr ~/.ssh/
yasunari@sil:~$ ssh -l root vl
The authenticity of host 'vl (192.168.2.55)' can't be established.
RSA key fingerprint is e2:24:93:d6:92:f0:20:92:39:7a:67:ff:97:38:71:b2.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'vl,192.168.2.55' (RSA) to the list of known hosts.
root@LS-VL815:~#

LS-XHL も

yasunari@sil:~$ ssh -l root brick
The authenticity of host 'brick (192.168.2.49)' can't be established.
RSA key fingerprint is 19:4c:85:45:08:31:3a:46:02:6b:2e:7f:c1:e5:48:2f.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'brick,192.168.2.49' (RSA) to the list of known hosts.
Last login: Wed Jun 15 22:15:57 2011 from sil.yamasita.jp
root@LS-XHL8DF:~#

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