03-19-2008
Problems using rsh
Hi,
I have a server which I've configured to allow an rsh trust from a csm server. However, of the 3 vlans on the target server, I can only rsh to one of them without being prompted for the password.
On lpar1
$ ifconfig -a
en2: flags=1e080863,480<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT,CHECKSUM_OFFLOAD( ACTIVE),CHAIN>
inet 10.162.73.138 netmask 0xffffff80 broadcast 10.162.73.255
tcp_sendspace 262144 tcp_recvspace 262144 rfc1323 1
en3: flags=5e080863,c0<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT,CHECKSUM_OFFLOAD(A CTIVE),PSEG,LARGESEND,CHAIN>
inet 10.162.70.71 netmask 0xffffffc0 broadcast 10.162.70.127
en5: flags=1e080863,80<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT,CHECKSUM_OFFLOAD(A CTIVE),CHAIN>
inet 10.162.73.11 netmask 0xffffff80 broadcast 10.162.73.127
tcp_sendspace 262144 tcp_recvspace 262144 rfc1323 1
On csm server
csms01:/ $ rsh 10.162.70.71
root's Password:
csms01:/ $ rsh 10.162.73.11
root's Password:
csms01:/ $ rsh 10.162.73.138
Last login: Wed Mar 19 12:51:07 GMT 2008 on /dev/pts/0 from csms01-tsm
root@lpar1:/ $
Can anyone suggest why this only works to 1 of the vlans? I have several other servers with a similar ip configuration and I can rsh too all the vlans without any problems.
Thanks
Gareth
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RSH(1) BSD General Commands Manual RSH(1)
NAME
rsh -- remote shell
SYNOPSIS
rsh [-Kdnx] [-l username] host [command]
DESCRIPTION
Rsh executes command on host.
Rsh copies its standard input to the remote command, the standard output of the remote command to its standard output, and the standard error
of the remote command to its standard error. Interrupt, quit and terminate signals are propagated to the remote command; rsh normally termi-
nates when the remote command does. The options are as follows:
-d The -d option turns on socket debugging (using setsockopt(2)) on the TCP sockets used for communication with the remote host.
-l By default, the remote username is the same as the local username. The -l option allows the remote name to be specified.
-n The -n option redirects input from the special device /dev/null (see the BUGS section of this manual page).
If no command is specified, you will be logged in on the remote host using rlogin(1).
Shell metacharacters which are not quoted are interpreted on local machine, while quoted metacharacters are interpreted on the remote
machine. For example, the command
rsh otherhost cat remotefile >> localfile
appends the remote file remotefile to the local file localfile, while
rsh otherhost cat remotefile ">>" other_remotefile
appends remotefile to other_remotefile.
FILES
/etc/hosts
SEE ALSO
rlogin(1),
HISTORY
The rsh command appeared in 4.2BSD.
BUGS
If you are using csh(1) and put a rsh in the background without redirecting its input away from the terminal, it will block even if no reads
are posted by the remote command. If no input is desired you should redirect the input of rsh to /dev/null using the -n option.
You cannot run an interactive command (like rogue(6) or vi(1)) using rsh; use rlogin(1) instead.
Stop signals stop the local rsh process only; this is arguably wrong, but currently hard to fix for reasons too complicated to explain here.
Linux NetKit (0.17) August 15, 1999 Linux NetKit (0.17)