rlogin & telnet

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# 1  
Old 10-16-2001
rlogin & telnet


what is the main difference between rlogin and telnet? Or they are synonymous

# 2  
Old 10-16-2001

The main difference is that telnet allows you to log into a machine by specifying a user/password and rlogin doesn't require a user/password to be specified.

Both rlogin and telnet should be avoided wherever possible and replaced by more secure login techniques, i.e. ssh etc.

Andy H
# 3  
Old 10-24-2001
I dont think so, that rlogin doesn't require username and password. since i used to work with rlogin for running some applications from server or other systems in a network.

rlogin IPaddress
username : anent
password : ************

Let me know your opinion.
# 4  
Old 10-24-2001

Sorry I was wrong in saying that with rlogin you don't need to enter a username/password.

You may need to specify a username if:
1 you want to use a different username to your current username 2 you are using a rlogin client program in windows

However you may or may not be required to specify a login password depending on if the ~/.rhosts file in the remote machine you want to login into is configure correctly.

Thanks for correcting me, I should have said that ~/.rhosts needs to be configured to allow password less logins.

# 5  
Old 10-25-2001
rlogin and telnet use different ports to connect as well.

You can disable the telnet port, or just disable telnet. Same for rlogin.

However as pointed out previously rlogin is configurable via the .rhosts file. You can use this file to allow, or disallow users, or hosts

Telnet is either allowed or not allowed. Nothing special..

# 6  
Old 10-29-2001
Well and Thanks, in windows system /.rhosts file has to be configured for user/passwd less entry.
Is it possible in Unix workstations ie., I am using HPUX system. Is it possible to rlogin from one to the other without passwd. since i used to rlogin using the password of the other client only.
If so, how to do it.

# 7  
Old 10-30-2001

It's possible to rlogin from one host to another host without a PASSWORD. (It's a bit confusing)
1) On the host you want to rlogin just create a ./rhosts file in the user's home directory to whom you want to rlogin and in that .rhosts file you specify the ip address or the hostname of the m/c from where you want to rlogin and the username from where you want to run rlogin.
for e.g user "me" on host A wants to rlogin to user "you" on host B without a password. Then user "you" on host B should create a .rhosts file in his/her home directory with the hostname and username entry i.e A me.

For more info refer the man rlogin or man rsh or man rcp or man rhosts
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