Date: Fri, 22 May 1998 08:45:54 -0400 (EDT) From: CyberPeasant <djv@bedford.net> To: vincentf@graphnet.com (vincent) Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Problems with Rcp Message-ID: <199805221245.IAA18998@lucy.bedford.net> In-Reply-To: <3562E35C.9DF4B24A@graphnet.com> from vincent at "May 20, 98 02:06:20 pm"
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vincent wrote:
> I' ve recently changed my OS (windows .... sorry) to install
> FreeBSD 2.2.5.
> I' ve 2 PC. One with FreeBSD and one with RedHat Linux
>
> I tried to make a RCP from my FreeBSD to Linux and I've always the same
> problem
> ACCESS DENIED
> I' ve configured the .rhosts file on the 2 PC and when I do the same on
> my Linux PC I can transmit files by RCP but not from the BSD to Linux
>
> I also configured my BSD like a DNS server and all is ok, but I can' t
> make a rcp transmission from the BSD to linux or from the Linux to BSD
>
> Could you tell me how I could do If you've got idees to help me, because
> I'm block in front of my PC
The problem is that you can transfer files from either machine in
either direction with rcp:
bsd $ rcp foo linux:/tmp/foo
bsd $ rcp linux:/tmp/foo bar
linux $ rcp baz bsd:/tmp/baz
linux $ rcp bsd:/tmp/wazoo ./yipee
Well, you can even get three machines in the act:
bsd $ rcp linux:/etc/passwd irix:/tmp/hacker
rcp has a way of being broken on Linux. For one thing, the man
pages lie about important things -- don't believe them on Linux,
particularly RedHat or other PAM versions. The last set I saw were
just BSD pages, but the Linuxboyz /have been busy with the code/.
No one has checked their work, either.
OK:
.rhosts must be owned by user or root and have permissions
like rw------- i.e. no group or world access.
For a non-root user /etc/hosts.equiv comes into play.
To diagnose the problem:
Insure that the appropriate lines in /etc/inetd.conf are active
on the "remote" machine. rcp runs through the rsh protocol.
The germane line on BSD is:
shell stream tcp nowait root /usr/libexec/rshd rshd
On Linux, this line is usually different, having a tcp wrapper, and
looks like:
shell stream tcp nowait root /usr/sbin/tcpd rshd -L -a
Or something like that.
As root:
bsd # rcp foo linux:/tmp/foo
If this succeeds, the .rhosts on the linux machine is working.
If it fails, then /ask on a linux list/ -- Linux does /not/ use
BSD authentication mechanisms, in particular most of the r- commands
are screwed up, and interact with an abomination called PAM.
A good list to ask on is linux-admin@vger.rutgers.edu. They will
want to see the .rhosts, ls -l .rhosts, and /etc/pam.conf, maybe
also /etc/inetd.conf and /etc/hosts.allow /etc/hosts.equiv and
/etc/hosts.deny. If you can't get relief there, ask me off-the-list.
bsd # rcp linux:/tmp/foo bar
Check this to see if it works. This also tests the /linux/ authentication.
Now repeat those tests as non-root. If they fail, examine /etc/hosts.equiv
on the linux box. (also hosts.allow and hosts.deny, also pam.conf).
Now login as root on Linux box. do
linux # rcp foo bsd:/tmp/foo
If that fails, check .rhosts on the bsd box. If you're using the
optional tcp wrappers on BSD, then check hosts.allow and hosts.deny.
Login as non-root:
linux $ rcp foo bsd:/tmp/foo
for failure, check .rhosts on the bsd box, and /etc/hosts.equiv. etc.
IF you have trouble, let's see the /specific/ command that failed.
Dave
--
Unix System 7:
an improvement on all other Unix releases, previous and subsequent.
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