SEO

Hello.

When I run remsh with a command, remsh won't return:

# rsh sys02 hostname
sys02.unx: Connection refused

But I AM able to login to the remote host with remsh without entering
a password:

# /usr/bin/remsh sys02
Last login: Tue May 13 12:02:30 from sys06.
Sun Microsystems Inc. SunOS 5.10 Generic January 2005
# /usr/bin/hostname
sys02.unx

Would anyone have an idea about why remsh with a command fails?

System to which I try to logon to:
# uname -a
SunOS sys02.unx 5.10 Generic_120011-14 sun4u sparc SUNW,Sun-Fire-280R

System from which I try to logon (ie. where I run /usr/bin/remsh):
$ uname -a
SunOS sys06 5.10 Generic_127127-11 sun4u sparc SUNW,Sun-Fire-V240 Solaris

On sys02, there's hardly anything installed. root has /sbin/sh as
login shell.

Thanks a lot,

Michael

PS: Here's a truss output:

root@sys06 $ truss rsh sys02 /usr/bin/hostname
execve("/usr/bin/rsh", 0xFFBFFB14, 0xFFBFFB24) argc = 3
resolvepath("/usr/lib/ld.so.1", "/lib/ld.so.1", 1023) = 12
resolvepath("/usr/bin/rsh", "/usr/bin/rsh", 1023) = 12
stat("/usr/bin/rsh", 0xFFBFF8F0) = 0
open("/var/ld/ld.config", O_RDONLY) Err#2 ENOENT
stat("/usr/lib/gss/libc.so.1", 0xFFBFF3A8) Err#2 ENOENT
stat("/usr/lib/krb5/libc.so.1", 0xFFBFF3A8) Err#2 ENOENT
stat("/lib/libc.so.1", 0xFFBFF3A8) = 0
resolvepath("/lib/libc.so.1", "/lib/libc.so.1", 1023) = 14
open("/lib/libc.so.1", O_RDONLY) = 3
mmap(0x00010000, 32768, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_ALIGN, 3, 0) = 0xFF3A0000
mmap(0x00010000, 1015808, PROT_NONE, MAP_PRIVATE|MAP_NORESERVE|MAP_ANON|MAP_ALIGN, -1, 0) = 0xFF280000
mmap(0xFF280000, 905509, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_TEXT, 3, 0) = 0xFF280000
mmap(0xFF36E000, 32401, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_INITDATA, 3, 909312) = 0xFF36E000
mmap(0xFF376000, 6368, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANON, -1, 0) = 0xFF376000
munmap(0xFF35E000, 65536) = 0
memcntl(0xFF280000, 144084, MC_ADVISE, MADV_WILLNEED, 0, 0) = 0
close(3) = 0
mmap(0x00010000, 24576, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANON|MAP_ALIGN, -1, 0) = 0xFF390000
munmap(0xFF3A0000, 32768) = 0
getcontext(0xFFBFF5E0)
getrlimit(RLIMIT_STACK, 0xFFBFF5C0) = 0
getpid() = 23022 [23021]
setustack(0xFF392A88)
getuid() = 0 [0]
brk(0x00071928) = 0
brk(0x00073928) = 0
stat("/platform/SUNW,Sun-Fire-V240/lib/libc_psr.so.1", 0xFFBF2A20) = 0
resolvepath("/platform/SUNW,Sun-Fire-V240/lib/libc_psr.so.1", "/platform/sun4u-us3/lib/libc_psr.so.1", 1023) = 37
open("/platform/SUNW,Sun-Fire-V240/lib/libc_psr.so.1", O_RDONLY) = 3
mmap(0x00010000, 32768, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_ALIGN, 3, 0) = 0xFF3A0000
mmap(0x00000000, 8192, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANON, -1, 0) = 0xFF3F0000
munmap(0xFF3A2000, 24576) = 0
close(3) = 0
getuid() = 0 [0]
getuid() = 0 [0]
getuid() = 0 [0]
getpid() = 23022 [23021]
open("/proc/23022/psinfo", O_RDONLY) = 3
read(3, "02\0\0\0\0\0\001\0\0 YEE".., 336) = 336
close(3) = 0
mmap(0x00010000, 65536, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANON|MAP_ALIGN, -1, 0) = 0xFF260000
getuid() = 0 [0]
getuid() = 0 [0]
open64("/var/run/name_service_door", O_RDONLY) = 3
fcntl(3, F_SETFD, 0x00000001) = 0
door_info(3, 0xFF371688) = 0
door_call(3, 0xFFBF2DE8) = 0
stat("/usr/lib/gss/libsocket.so.1", 0xFFBF2A60) Err#2 ENOENT
stat("/usr/lib/krb5/libsocket.so.1", 0xFFBF2A60) Err#2 ENOENT
stat("/lib/libsocket.so.1", 0xFFBF2A60) = 0
resolvepath("/lib/libsocket.so.1", "/lib/libsocket.so.1", 1023) = 19
open("/lib/libsocket.so.1", O_RDONLY) = 4
mmap(0x00010000, 32768, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_ALIGN, 4, 0) = 0xFF380000
mmap(0x00010000, 122880, PROT_NONE, MAP_PRIVATE|MAP_NORESERVE|MAP_ANON|MAP_ALIGN, -1, 0) = 0xFF240000
mmap(0xFF240000, 44594, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_TEXT, 4, 0) = 0xFF240000
mmap(0xFF25C000, 4277, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_INITDATA, 4, 49152) = 0xFF25C000
munmap(0xFF24C000, 65536) = 0
memcntl(0xFF240000, 14320, MC_ADVISE, MADV_WILLNEED, 0, 0) = 0
close(4) = 0
stat("/lib/libnsl.so.1", 0xFFBF2998) = 0
resolvepath("/lib/libnsl.so.1", "/lib/libnsl.so.1", 1023) = 16
open("/lib/libnsl.so.1", O_RDONLY) = 4
mmap(0xFF380000, 32768, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 4, 0) = 0xFF380000
mmap(0x00010000, 729088, PROT_NONE, MAP_PRIVATE|MAP_NORESERVE|MAP_ANON|MAP_ALIGN, -1, 0) = 0xFF180000
mmap(0xFF180000, 595222, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_TEXT, 4, 0) = 0xFF180000
mmap(0xFF222000, 33761, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_INITDATA, 4, 598016) = 0xFF222000
mmap(0xFF22C000, 23248, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANON, -1, 0) = 0xFF22C000
munmap(0xFF212000, 65536) = 0
memcntl(0xFF180000, 89656, MC_ADVISE, MADV_WILLNEED, 0, 0) = 0
close(4) = 0
munmap(0xFF380000, 32768) = 0
sigfillset(0xFF376648) = 0
open("/etc/netconfig", O_RDONLY|O_LARGEFILE) = 4
fcntl(4, F_DUPFD, 0x00000100) Err#22 EINVAL
read(4, " # p r a g m a i d e n".., 1024) = 1024
read(4, " t s t p i _ c".., 1024) = 215
read(4, 0x00072FB0, 1024) = 0
lseek(4, 0, SEEK_SET) = 0
read(4, " # p r a g m a i d e n".., 1024) = 1024
brk(0x00073928) = 0
brk(0x00075928) = 0
read(4, " t s t p i _ c".., 1024) = 215
read(4, 0x00072FB0, 1024) = 0
close(4) = 0
open("/dev/udp", O_RDONLY) = 4
ioctl(4, SIOCGLIFNUM, 0xFFBF2EBC) = 0
close(4) = 0
getuid() = 0 [0]
getuid() = 0 [0]
door_info(3, 0xFFBF2BC8) = 0
door_call(3, 0xFFBF2C70) = 0
getpid() = 23022 [23021]
brk(0x00075928) = 0
brk(0x00077928) = 0
mmap(0x00010000, 65536, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANON|MAP_ALIGN, -1, 0) = 0xFF160000
getuid() = 0 [0]
getuid() = 0 [0]
door_info(3, 0xFFBF2650) = 0
door_call(3, 0xFFBF26F8) = 0
open("/etc/default/nss", O_RDONLY|O_LARGEFILE) = 4
fcntl(4, F_DUPFD, 0x00000100) Err#22 EINVAL
read(4, " # i d e n t\t " @ ( #".., 1024) = 1024
read(4, " y t h o s e\n # f u n".., 1024) = 211
read(4, 0x00075B98, 1024) = 0
close(4) = 0
sigaction(SIGPIPE, 0xFFBF2C60, 0xFFBF2FF8) = 0
schedctl() = 0xFF37E000
lwp_sigmask(SIG_SETMASK, 0x00100000, 0x00000000) = 0xFFBFFEFF [0x0000FFFF]
so_socket(PF_INET6, SOCK_STREAM, IPPROTO_IP, "", SOV_DEFAULT) = 4
setsockopt(4, tcp, TCP_EXCLBIND, 0xFFBF2ADC, 4, SOV_DEFAULT) = 0
setsockopt(4, tcp, TCP_ANONPRIVBIND, 0xFFBF2ADC, 4, SOV_DEFAULT) = 0
bind(4, 0xFFBF2BA0, 32, SOV_SOCKBSD) = 0
getsockname(4, 0xFFBF2BA0, 0xFFBF2AD4, SOV_DEFAULT) = 0
setsockopt(4, tcp, TCP_ANONPRIVBIND, 0xFFBF2AD8, 4, SOV_DEFAULT) = 0
setsockopt(4, tcp, TCP_EXCLBIND, 0xFFBF2AD8, 4, SOV_DEFAULT) = 0
ioctl(4, FIOSETOWN, 0xFFBF2C9C) = 0
connect(4, 0xFFBF2ED8, 32, SOV_DEFAULT) Err#146 ECONNREFUSED
close(4) = 0
nanosleep(0xFFBF2C98, 0xFFBF2C90) (sleeping...)
nanosleep(0xFFBF2C98, 0xFFBF2C90) = 0
so_socket(PF_INET6, SOCK_STREAM, IPPROTO_IP, "", SOV_DEFAULT) = 4
setsockopt(4, tcp, TCP_EXCLBIND, 0xFFBF2ADC, 4, SOV_DEFAULT) = 0
bind(4, 0xFFBF2BA0, 32, SOV_SOCKBSD) = 0
setsockopt(4, tcp, TCP_EXCLBIND, 0xFFBF2AD8, 4, SOV_DEFAULT) = 0
ioctl(4, FIOSETOWN, 0xFFBF2C9C) = 0
connect(4, 0xFFBF2ED8, 32, SOV_DEFAULT) Err#146 ECONNREFUSED
close(4) = 0
nanosleep(0xFFBF2C98, 0xFFBF2C90) (sleeping...)
nanosleep(0xFFBF2C98, 0xFFBF2C90) = 0
so_socket(PF_INET6, SOCK_STREAM, IPPROTO_IP, "", SOV_DEFAULT) = 4
setsockopt(4, tcp, TCP_EXCLBIND, 0xFFBF2ADC, 4, SOV_DEFAULT) = 0
bind(4, 0xFFBF2BA0, 32, SOV_SOCKBSD) = 0
setsockopt(4, tcp, TCP_EXCLBIND, 0xFFBF2AD8, 4, SOV_DEFAULT) = 0
ioctl(4, FIOSETOWN, 0xFFBF2C9C) = 0
connect(4, 0xFFBF2ED8, 32, SOV_DEFAULT) Err#146 ECONNREFUSED
close(4) = 0
nanosleep(0xFFBF2C98, 0xFFBF2C90) (sleeping...)
nanosleep(0xFFBF2C98, 0xFFBF2C90) = 0
so_socket(PF_INET6, SOCK_STREAM, IPPROTO_IP, "", SOV_DEFAULT) = 4
setsockopt(4, tcp, TCP_EXCLBIND, 0xFFBF2ADC, 4, SOV_DEFAULT) = 0
bind(4, 0xFFBF2BA0, 32, SOV_SOCKBSD) = 0
setsockopt(4, tcp, TCP_EXCLBIND, 0xFFBF2AD8, 4, SOV_DEFAULT) = 0
ioctl(4, FIOSETOWN, 0xFFBF2C9C) = 0
connect(4, 0xFFBF2ED8, 32, SOV_DEFAULT) Err#146 ECONNREFUSED
close(4) = 0
nanosleep(0xFFBF2C98, 0xFFBF2C90) (sleeping...)
nanosleep(0xFFBF2C98, 0xFFBF2C90) = 0
so_socket(PF_INET6, SOCK_STREAM, IPPROTO_IP, "", SOV_DEFAULT) = 4
setsockopt(4, tcp, TCP_EXCLBIND, 0xFFBF2ADC, 4, SOV_DEFAULT) = 0
bind(4, 0xFFBF2BA0, 32, SOV_SOCKBSD) = 0
setsockopt(4, tcp, TCP_EXCLBIND, 0xFFBF2AD8, 4, SOV_DEFAULT) = 0
ioctl(4, FIOSETOWN, 0xFFBF2C9C) = 0
connect(4, 0xFFBF2ED8, 32, SOV_DEFAULT) Err#146 ECONNREFUSED
close(4) = 0
nanosleep(0xFFBF2C98, 0xFFBF2C90) (sleeping...)
nanosleep(0xFFBF2C98, 0xFFBF2C90) = 0
so_socket(PF_INET6, SOCK_STREAM, IPPROTO_IP, "", SOV_DEFAULT) = 4
setsockopt(4, tcp, TCP_EXCLBIND, 0xFFBF2ADC, 4, SOV_DEFAULT) = 0
bind(4, 0xFFBF2BA0, 32, SOV_SOCKBSD) = 0
setsockopt(4, tcp, TCP_EXCLBIND, 0xFFBF2AD8, 4, SOV_DEFAULT) = 0
ioctl(4, FIOSETOWN, 0xFFBF2C9C) = 0
connect(4, 0xFFBF2ED8, 32, SOV_DEFAULT) Err#146 ECONNREFUSED
close(4) = 0
sys02.unxwrite(2, " s y s 0 2 . u n x ".., 9) = 9
: write(2, " : ", 2) = 2
Connection refusedwrite(2, " C o n n e c t i o n r".., 18) = 18

write(2, "\n", 1) = 1
sigaction(SIGPIPE, 0xFFBF2C60, 0x00000000) = 0
lwp_sigmask(SIG_SETMASK, 0x00000000, 0x00000000) = 0xFFBFFEFF [0x0000FFFF]
_exit(1)

Michael Schmarck wrote:

> Would anyone have an idea about why remsh with a command fails?

man remsh:

If you omit command, instead of executing a single command,
rsh logs you in on the remote host using rlogin(1).

in other words, the server allows rlogin but not remsh.

> System to which I try to logon to:
> # uname -a
> SunOS sys02.unx 5.10 Generic_120011-14 sun4u sparc SUNW,Sun-Fire-280R

svcs -a | grep shell
svcadm enable shell:default

OR

inetadm | grep shell
inetadm -e shell:default

Oscar del Rio <delrio@mie.utoronto.ca> wrote:

> inetadm | grep shell
> inetadm -e shell:default

That helped. Thanks also for the pointer to the man page!

Michael