topic Re: can't use rcp in Operating System - Linux

can't use rcp

peterchu — Tue, 31 Aug 2004 01:36:13 GMT

I have setup a new RH Linux ( host B ) , I can't use "rcp" to copy file from host A to it , I have already setup the ~userid/.rhosts ( hosts IP ) , what services or setting that I need to set at host B ? thx

Re: can't use rcp

peterchu — Tue, 31 Aug 2004 02:17:45 GMT

I have already setup the /etc/securetty , and add rcp rsh to it , but still not work

Re: can't use rcp

Stuart Browne — Tue, 31 Aug 2004 02:26:56 GMT

Is the 'rsh' service running ('chkconfig --list rsh'), and is the firewall allowing the traffic in (use 'iptables -nvL' to check) ?

Re: can't use rcp

Andrew Bruce — Tue, 31 Aug 2004 18:35:08 GMT

As Stuart says, check you have the rsh daemons running (rsh supports rlogin, rcp, and remsh, but I don't think the RPM is installed by default):

rpm -q rsh

should tell you.

However, bear in mind that rcp is insecure.

You may be better of setting up ssh on the processor and using 'scp' instead. It is a secure replacement for rcp (the usage is identical with the exception that if your target host doesn't 'know' the machine initiating the scp, you get prompted for a password (conpared with the rcp simply failing with an authentication error).

It takes a little extra effort to get ssh set up, but once it is, it is far more flexible and easier to use (oh, and more secure! :-)

HTH.

A.

Re: can't use rcp

dirk dierickx — Wed, 01 Sep 2004 01:05:29 GMT

don't use rcp, but use scp instead.

all r* commands are unsafe.

Re: can't use rcp

Vitaly Karasik_1 — Wed, 01 Sep 2004 02:06:03 GMT

if rsh is up and rcp doesn't work, check

- .rhosts sysntax and permission.
- DNS resolution
- do you use the same userid on both systems?

Re: can't use rcp

Ross Minkov — Mon, 06 Sep 2004 19:35:55 GMT

make sure that .rhosts perms are set to 600

and use ssh/scp instead of rsh/rcp.

Re: can't use rcp

Muthukumar_5 — Mon, 06 Sep 2004 22:40:18 GMT

Did you setup the .rhosts on both end of hostA and hostB?

Can you execute rsh between these two?
what did you get during rcp issuing so that to find the issue.

Is hosts IP resolvable on both end's? Check it with nslookup command? Is remshd running to service rcp on hostB or not??

check remshd on remote hosts else start it and check