topic Re: Can' t run rcp in Operating System - Linux

Can' t run rcp

juno2 — Fri, 18 Jul 2003 23:56:34 GMT

I have newly install a linux (host A) and modify the file /root/.rhosts , I added the line to this file - "ip_address of host B root " , but I still can't use rcp to copy file to host A , can suggest can to solve ?

Re: Can' t run rcp

juno2 — Fri, 18 Jul 2003 23:59:37 GMT

except change the file /root/.rhosts , is there any setting need to change to allow rcp file ? thx.

Re: Can' t run rcp

juno2 — Sat, 19 Jul 2003 00:54:23 GMT

is there any service need to restart ? thx

Re: Can' t run rcp

Jerome Henry — Sat, 19 Jul 2003 06:23:32 GMT

everybody was sleeping !

Here we go :

Your .rhost file, being in root directory, do not need to containt 'root'.
It should contain machine names on which you have accounts, say
host A
host B
host C
and so on. Your machines should be referenced on DNS server, or you can use IP if it's not the case.

This .rhost file should be the same on each computer !!

Check that rlogind is on.

It should work.

J

Re: Can' t run rcp

Caesar_3 — Sat, 19 Jul 2003 15:00:18 GMT

Hello!

All that your $HOME/.rhosts should contain
is the hostnames of the hosts that allow
to made r-commands to this machine without
password.

Caesar

Re: Can' t run rcp

Jerome Henry — Sat, 19 Jul 2003 15:47:25 GMT

Oh, yes, I forgot to precise that. Tks Caesar. I was assuming that you were running rcp being root.

If you use another user's account, then it's in /home/user_name/.rhosts that all this should be written.

Difficulty is that most of the time, even if you have same user name, you don't have same UID and GID, and root is the easiest user to handle as it has all rights.

J

Re: Can' t run rcp

Balaji N — Sat, 19 Jul 2003 16:57:15 GMT

jerome, in which case u end up comprising the system completely.

juno,

1. what is the error u are getting? Permission denied. or u sure it is no firewall issue.

2. what is the user ur are trying to rcp. root? or some other user. are the names same on both the boxes.

3. does rsh or rlogin work. mean to ask, does rsh between the boxes go without a password.

4. is rsh/rcp/rexec enabled.

5. is there a tcp wrappers running and u have disabled access in hosts.allow or hosts.deny

6. is the rhosts file group/world writable. try access permissions of 400 on this file.

just some random thoughts. dont blame me if it doesnt help :-(
-balaji (working in the nights have made me dull)

Re: Can' t run rcp

Jerome Henry — Sun, 20 Jul 2003 05:52:12 GMT

Yes ! You're right Balaji ! That's why I hate r* commands... I prefer ssh... or to walk to the other computer !

How is it that you slept so few hours this week ? To hot ?

J

Re: Can' t run rcp

Steven E. Protter — Sun, 20 Jul 2003 11:43:51 GMT

Simple very useful test.

Shut down whatever firewall two of the machines are using.

service iptables stop

or

service ichains stop

Then re-run the test.

If it works, you know its a simple firewall problem. You can post the configuration here and we will help, or you can work it out yourself. As I recall port 504 is pretty important.

As others have recommended, Openssh is a much better choice. Its easier to configure and its much more secure.

I'm attaching a doc that can help you get password free file transfer and command running in 10 minutes time.

SEP