Help: How to use RSH to login machines without password?

Hi,

I have 4 PCs in LAN, IP are 192.168.0.1~192.168.0.4, and the first machine
is server, so I wanna use rsh to login other 3 machines. Nut I don't wanna
type password every time.

My server's OS is RHEL 3 Linux, others' is FC6.
Which files and service should I operate?

Thank you very much~

Regards,

Amy Lee

Amy Lee wrote:
> Hi,
>
> I have 4 PCs in LAN, IP are 192.168.0.1~192.168.0.4, and the first machine
> is server, so I wanna use rsh to login other 3 machines. Nut I don't wanna
> type password every time.
>
> My server's OS is RHEL 3 Linux, others' is FC6.
> Which files and service should I operate?

Use ssh and login using Public Key Authentication (so your computer
shares a secret with the other machines that it wants to log into).

"man ssh" tells you how.

Robert
>
> Thank you very much~
>
> Regards,
>
> Amy Lee

On Sat, 15 Sep 2007 11:53:51 +0000, Robert Harris wrote:

> Amy Lee wrote:
>> Hi,
>>
>> I have 4 PCs in LAN, IP are 192.168.0.1~192.168.0.4, and the first machine
>> is server, so I wanna use rsh to login other 3 machines. Nut I don't wanna
>> type password every time.
>>
>> My server's OS is RHEL 3 Linux, others' is FC6.
>> Which files and service should I operate?
>
> Use ssh and login using Public Key Authentication (so your computer
> shares a secret with the other machines that it wants to log into).
>
> "man ssh" tells you how.
>
> Robert
>>
>> Thank you very much~
>>
>> Regards,
>>
>> Amy Lee

Thank you sir. However, I've known how to configurate ssh without
password, I wanna know the same function in rsh.

Amy Lee wrote:
> On Sat, 15 Sep 2007 11:53:51 +0000, Robert Harris wrote:
>
>> Amy Lee wrote:
>>> Hi,
>>>
>>> I have 4 PCs in LAN, IP are 192.168.0.1~192.168.0.4, and the first machine
>>> is server, so I wanna use rsh to login other 3 machines. Nut I don't wanna
>>> type password every time.
>>>
>>> My server's OS is RHEL 3 Linux, others' is FC6.
>>> Which files and service should I operate?
>> Use ssh and login using Public Key Authentication (so your computer
>> shares a secret with the other machines that it wants to log into).
>>
>> "man ssh" tells you how.
>>
>> Robert
>>> Thank you very much~
>>>
>>> Regards,
>>>
>>> Amy Lee
>
> Thank you sir. However, I've known how to configurate ssh without
> password, I wanna know the same function in rsh.
>
>
Ah. Well, on my computer, rsh is a symlink to ssh and if you configure
one, then you also configure the other. However, if you want to use the
traditional rsh with the traditional insecure method of logging in, then
create a file called ".rhosts" in your home directory of each of the
machines that you want to log into containing the line:

yourusername yourhostname

where yourusername and yourhostname are replaced by your user name and
host name respectively. Check with rlogin that you can log into your
other hosts without a password.

Robert

Amy Lee wrote:
> I have 4 PCs in LAN, IP are 192.168.0.1~192.168.0.4, and the first machine
> is server, so I wanna use rsh to login other 3 machines. Nut I don't wanna
> type password every time.
>
> My server's OS is RHEL 3 Linux, others' is FC6.
> Which files and service should I operate?

Doing this with rsh isn't a recommended practice.
If you have to do it, .rhosts is preferable to hosts.equiv.

Robert Harris <robert.f.harris@blueyonder.co.uk> wrote:
> However, if you want to use the
> traditional rsh with the traditional insecure method of logging in, then
> create a file called ".rhosts" in your home directory of each of the
> machines that you want to log into containing the line:

> yourusername yourhostname

I think you'll find it should be the other way round (remote-host
remote-user).

Also, another gotcha is that the remote-host part must be an exact match
for the name (or IP address) that the target host sees the originating
host as. If you don't use /etc/hosts or DNS, now would be a good time
to start.

# This is /etc/hosts
127.0.0.1 localhost loopback
192.168.0.1 somehost.my.domain somehost
192.168.0.2 anotherhost.my.domain anotherhost
etc.

Chris