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rcp permission

Posted on 2000-04-13
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Last Modified: 2013-12-27

I have two solaris machines A, and, B, both have the account "accnt" established.

The .rhosts at A:~accnt has the following line:

    B.powertv.com  accnt

The .rhosts at B:~accnt has the following line:

    B.powertv.com accnt

I am able to do the following on A

     rcp test.txt B:~accnt

But if I try the corresponding one on B

     rcp test.txt A:~accnt

I got "permission denied"

Any idea where to look for the configuration problem ?

Thanks !!

Vincent

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Question by:vincentlue
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by:tfewster
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> The .rhosts at A:~accnt has the >following line:  B.powertv.com  accnt
- So A trusts rcp/rlogin from B

> The .rhosts at B:~accnt has the >following line: B.powertv.com accnt
- So B trusts B (Why?)

>I am able to do the following on A
>rcp test.txt B:~accnt
- As B hasn't been setup to trust A by .rhosts, it must have been set up in B's /etc/hosts.equiv

>But if I try the corresponding one on >B: rcp test.txt A:~accnt
>I got "permission denied"
- If just the .rhosts is set, this should work. However, if B has been specified as UNtrusted in A's /etc/hosts.equiv with -B, the .rhosts file won't override it.

Further, rcp/rlogin to A may have been disabled in /etc/inetd.conf

Another possibility is if the hostnames of the machines are just A & B instead of ?.powertv.com - I can't remember if rcp authentication goes on the hostname or the IP address



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Expert Comment

by:encilar
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tfewster is right !!! For simplicity, just do this entry for both .rhosts of both machines...

The .rhosts at A:~accnt should have the following line:
B.powertv.com  accnt

The .rhosts at B:~accnt should have the following line:
A.powertv.com accnt

I'm pretty sure this would work for rcp, rsh, rlogin, etc.
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Accepted Solution

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jacquesc030600 earned 50 total points
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Hi,

you should edit two files in each system

On system A

nodename of machine A and B

vi /etc/hosts



exemple

ComputerA   192.9.200.1
ComputerB   192.9.200.2

And in the file /.rhosts on each one the nodename of the other computer

On the computer A

vi /.rhosts

computerB

On the computer B

vi /.rhosts

computerA

It should work


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by:tfewster
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jaquesc, /.rhosts is the file to allow rlogin by root (which is NOT usually a good idea). Please convert your answer to a comment.

vincentlue, one additional test is to try rlogin from B to A; If you are prompted for your password, but then allowed in, this would confirm that there are no other networking/security issues, e.g. if the hosts are on opposite sides of a firewall. Also, double check .rhosts is owned by user accnt.

BTW, I may have been wrong about .rhosts not over-riding /etc/hosts.equiv - It does under HP-UX!
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by:vincentlue
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Sorry to take that long to respond to
your help.

There is a typo my original question.
It should read as:

The .rhosts at B:~accnt has the following line:

    A.powertv.com accnt

As many of you have figure out.

I checked inetd.conf and hosts, both machines are pretty much the same. There is no host.equiv setting.

I try "rlogin", yes, one goes through
without asking password and the other
does ask password and allowed in afterwards.
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by:tfewster
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Hi Vincent - that SHOULD work! Just to restate & summarise the other tests:

(A trusts B - but B$ rcp test.txt A:~accnt fails)

Check ~accnt/.rhosts on A is owned by user accnt.

Are there any "-" entries in /etc/hosts.equiv on A? (Even so, the Solaris
7 man page for hosts.equiv says .rhosts should override this)

As a temporary test, edit /etc/hosts.equiv on A to put B.powertv.com as
the first line in there.

(Forget what I said about inetd.conf, if rsh and rlogin were commented out
you'd get a "Connection refused" error instead - Sorry!)

Try "pulling" the file, instead of "pushing" it by doing:
B$ rcp A:~accnt/test.txt .
to make sure it's not a write permission problem.
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by:ianB
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