[fol] SSHで公開鍵の追加登録の仕方は?

["cchikakoo" <cchikakoo@xxxxxxxxxxx>]

宜しくお願い致します。

RedHat9(host1)─WAN─Redhat9(host2)
|
WAN
|
RedHat9(host3)

としています。どのホストもバージョンは

$ rpm -qa | grep ssh
openssh-clients-3.5p1-11
openssh-askpass-gnome-3.5p1-11
openssh-server-3.5p1-11
openssh-3.5p1-11
openssh-askpass-3.5p1-11

で相互にパスワード認証は出来ています。

[user01@xxxxxxxxxxxxxxxx]$ ssh-keygen -t dsa
[user01@xxxxxxxxxxxxxxxx]$ ssh-keygen -t rsa
[user01@xxxxxxxxxxxxxxxx]$ ssh-keygen -t rsa1
[user01@xxxxxxxxxxxxxxxx]$ cat ~/.ssh/id_dsa.pub >> ~/authorized_keys
[user01@xxxxxxxxxxxxxxxx]$ cat ~/.ssh/id_rsa.pub >> ~/authorized_keys
[user01@xxxxxxxxxxxxxxxx]$ cat ~/.ssh/identity.pub >> ~/authorized_keys
[user01@xxxxxxxxxxxxxxxx]$ scp -P 60001
user01@xxxxxxxxxxxxxxxx:~/authorized_keys ~/.ssh/
[user01@xxxxxxxxxxxxxxxx]$ ls -l ~/.ssh/authorized_keys
-rw-------    1 user01   user01       1179  1月  8 11:17
/home/user01/.ssh/authorized_keys
[user01@xxxxxxxxxxxxxxxx]$ ls -alF ~/ | grep ssh
drwx------    2 user01   user01       4096 12月 23 13:06 .ssh/

として

# cat /etc/ssh/sshd_config | grep -v ^# | grep -v ^$
SyslogFacility AUTHPRIV
LogLevel DEBUG3
IgnoreRhosts no
RhostsRSAAuthentication yes
HostbasedAuthentication yes
PasswordAuthentication no
X11Forwarding yes
Subsystem       sftp    /usr/libexec/openssh/sftp-server

[user01@xxxxxxxxxxxxxxxx]$ ssh -l user01 host1.dyndns.net -p 60001
としてアクセスできました。

続いて

[user01@xxxxxxxxxxxxxxxx]$ ssh-keygen -t dsa
[user01@xxxxxxxxxxxxxxxx]$ ssh-keygen -t rsa
[user01@xxxxxxxxxxxxxxxx]$ ssh-keygen -t rsa1
[user01@xxxxxxxxxxxxxxxx]$ cat ~/.ssh/id_dsa.pub >> ~/authorized_keys
[user01@xxxxxxxxxxxxxxxx]$ cat ~/.ssh/id_rsa.pub >> ~/authorized_keys
[user01@xxxxxxxxxxxxxxxx]$ cat ~/.ssh/identity.pub >> ~/authorized_keys
[user01@xxxxxxxxxxxxxxxx]$ scp -P 60001
user01@xxxxxxxxxxxxxxxx:~/authorized_keys ~/other_authorized_keys
[user01@xxxxxxxxxxxxxxxx]$ cat ~/other_authorized_keys >>
~/.ssh/authorized_keys
[user01@xxxxxxxxxxxxxxxx]$ ls -l ~/.ssh/authorized_keys
-rw-------    1 user01   user01       1179  1月  8 11:17
/home/user01/.ssh/authorized_keys
[user01@xxxxxxxxxxxxxxxx]$ ls -alF ~/ | grep ssh
drwx------    2 user01   user01       4096 12月 23 13:06 .ssh/

として追加しました。でも

[user01@xxxxxxxxxxxxxxxx]$ ssh -l user01 host1.dyndns.net -p 60001
Permission denied (publickey,keyboard-interactive,hostbased).

となってしまいます。
どうすればhost3からもアクセス出来るようになるのでしょうか?