topic Re: ftp issue in Operating System - HP-UX

ftp issue

infarakesh — Tue, 31 May 2011 20:21:58 GMT

Unabel to enable ftp.

errors observed:

1) inetd[1501]: ftp/tcp: Unknown service
2) # ftp 0
ftp: connect: Connection refused
ftp>

inputs:

1) # grep -i ftp services
ftp-data 20/tcp # File Transfer Protocol (Data)
ftp 21/tcp # File Transfer Protocol (Control)
tftp 69/udp # Trivial File Transfer Protocol
sftp 115/tcp # Simple File Transfer Protocol
bftp 152/tcp # Background File Transfer Protocol
ftp-ftam 8868/tcp # FTP->FTAM Gateway

2) # grep -i ftp inetd.conf
#ftp stream tcp nowait root /usr/lbin/ftpd ftpd -l -u 22
ftp stream tcp nowait root /usr/lbin/ftpd ftpd -l
ftp stream tcp6 nowait root /usr/lbin/ftpd ftpd -l
# Before uncommenting the "tftp" entry below, please make sure
# that you have a "tftp" user in /etc/passwd. If you don't
# have one, please consult the tftpd(1M) manual entry for
#tftp dgram udp wait root /usr/lbin/tftpd tftpd
#

3) # ls -l /usr/lbin/ftpd
-r-xr--r-- 1 bin bin 610120 Nov 10 2006 /usr/lbin/ftpd
#

4) # ls -l services
-rw-r--r-- 1 bin bin 11545 May 31 14:53 services

Re: ftp issue

infarakesh — Tue, 31 May 2011 20:23:16 GMT

HP-UX B.11.23 U ia64 0242525198 unlimited-user license
#

Re: ftp issue

infarakesh — Tue, 31 May 2011 20:41:44 GMT

# netstat -an|grep '*.21'
tcp 0 0 *.2121 *.* LISTEN
tcp 0 0 *.2148 *.* LISTEN
udp 0 0 *.2121 *.*
udp 0 0 *.2148 *.*
#

Re: ftp issue

Patrick Wallek — Tue, 31 May 2011 20:51:40 GMT

There appears to be an error either in /etc/services or /etc/inetd.conf as there does not appear to be anything listening on port 21.

Are there any error messages in /var/adm/syslog/syslog.log?

Can you try running an 'inetd -c' and see what errors are reported and whether or not anything is generated in syslog.log?

Re: ftp issue

Steven Schweda — Tue, 31 May 2011 20:51:52 GMT

> # netstat -an|grep '*.21'
> [...]

Well, yeah. "Connection refused" made it
pretty clear that you aren't running the FTP
server.

> 1) # grep -i ftp services
> ftp-data 20/tcp # File Transfer Protocol (Data)
> ftp 21/tcp # File Transfer Protocol (Control)
> [...]

Assuming that "services" was "/etc/services",
then that looks ok to me.

> 1) inetd[1501]: ftp/tcp: Unknown service

If "/etc/services" is ok, but you get a
complaint like "Unknown service", then my
guess would be that you're not looking at the
same "services" data as inetd is. Are you
running NIS? LDAP? (Something else about
which I know nothing?)

cat /etc/nsswitch.conf

What's the history of this problem? Did FTP
ever work before on this system? What's
changed recently?

Re: ftp issue

infarakesh — Tue, 31 May 2011 20:52:55 GMT

getting the below errors whle doing "inetd -c"

May 31 15:51:42 inescape inetd[1501]: Rereading configuration
May 31 15:51:42 inescape inetd[1501]: ftp/tcp: Unknown service
May 31 15:51:42 inescape inetd[1501]: telnet/tcp: Unknown service
May 31 15:51:24 inescape syslog: gethostbyaddr: inx174303.informatica.com. != 10.65.2.76
May 31 15:51:42 inescape above message repeats 3 times
May 31 15:51:42 inescape inetd[1501]: login/tcp: Unknown service
May 31 15:51:42 inescape inetd[1501]: shell/tcp: Unknown service
May 31 15:51:42 inescape inetd[1501]: ftp/tcp: Unknown service
May 31 15:51:42 inescape inetd[1501]: exec/tcp: Unknown service
May 31 15:51:42 inescape inetd[1501]: ntalk/udp: Unknown service
May 31 15:51:42 inescape inetd[1501]: auth/tcp: Unknown service
May 31 15:51:42 inescape inetd[1501]: printer/tcp: Unknown service
May 31 15:51:42 inescape inetd[1501]: daytime/tcp: Unknown service
May 31 15:51:42 inescape inetd[1501]: daytime/udp: Unknown service
May 31 15:51:42 inescape inetd[1501]: time/tcp: Unknown service
May 31 15:51:42 inescape inetd[1501]: echo/tcp: Unknown service
May 31 15:51:42 inescape inetd[1501]: echo/udp: Unknown service
May 31 15:51:42 inescape inetd[1501]: discard/tcp: Unknown service
May 31 15:51:42 inescape inetd[1501]: discard/udp: Unknown service
May 31 15:51:42 inescape inetd[1501]: chargen/tcp: Unknown service
May 31 15:51:42 inescape inetd[1501]: chargen/udp: Unknown service
May 31 15:51:42 inescape inetd[1501]: kshell/tcp: Unknown service
May 31 15:51:42 inescape inetd[1501]: klogin/tcp: Unknown service
May 31 15:51:42 inescape inetd[1501]: recserv/tcp: Unknown service
May 31 15:51:42 inescape inetd[1501]: dtspc/tcp: Unknown service
May 31 15:51:42 inescape inetd[1501]: swat/tcp: Unknown service
May 31 15:51:42 inescape inetd[1501]: hacl-probe/tcp: Unknown service
May 31 15:51:42 inescape inetd[1501]: registrar/tcp: Unknown service
May 31 15:51:42 inescape inetd[1501]: hacl-cfg/udp: Unknown service
May 31 15:51:42 inescape inetd[1501]: hacl-cfg/tcp: Unknown service
May 31 15:51:42 inescape inetd[1501]: Configuration complete

Re: ftp issue

Steven Schweda — Tue, 31 May 2011 20:55:24 GMT

> May 31 15:51:42 inescape inetd[1501]: : Unknown service

Sounds like a "services" data base problem,
doesn't it?

Re: ftp issue

infarakesh — Tue, 31 May 2011 20:55:38 GMT

ftp never worked I guess.

This machine is of NIS client.

# ypwhich
spyder.xxxxx

nsswitch.conf file never existed. I added an hr back.. no luck though

# cat /etc/nsswitch.conf
#
# /etc/nsswitch.nis:
#
# @(#)B11.23_LR
#
# An example file that could be copied over to /etc/nsswitch.conf; it
# uses NIS (YP) in conjunction with files.
#

passwd: files nis
group: files nis
hosts: nis [NOTFOUND=return] files
ipnodes: files
networks: nis [NOTFOUND=return] files
protocols: nis [NOTFOUND=return] files
rpc: nis [NOTFOUND=return] files
publickey: nis [NOTFOUND=return] files
netgroup: nis [NOTFOUND=return] files
automount: files nis
aliases: files nis
services: files nis
#

Re: ftp issue

infarakesh — Tue, 31 May 2011 20:56:43 GMT

I understood that it's services problem.. how to correct it?

In fact, I restored the original file w/o any luck

Re: ftp issue

infarakesh — Tue, 31 May 2011 20:59:03 GMT

# cat /etc/nsswitch.conf|grep -i services
services: files nis
#

Re: ftp issue

Patrick Wallek — Tue, 31 May 2011 20:59:06 GMT

Yep, it does.

Check /etc/nsswitch.conf and see what the services line looks like.

It should look something like:

services: files

If there is something like NIS there, then you need to check your NIS maps.

Re: ftp issue

Steven Schweda — Tue, 31 May 2011 21:12:00 GMT

> ftp never worked I guess.

"I guess" does not inspire much confidence.
What _does_ work on this system?

> This machine is of NIS client.

So, instead of "cat /etc/services", what do
you get from:
ypcat services
?

Where's the NIS master? Do other NIS clients
work better than this one?

> In fact, I restored the original file w/o
> any luck

Which file is that? Restored what? My
psychic powers are very weak. Guessing that
you might be using NIS is about the best
you'll get from me if you want to depend on
me to guess at this stuff.

Re: ftp issue

infarakesh — Tue, 31 May 2011 21:24:13 GMT

1) server works normally. Issues observing with telnet, ftp

2) # ypcat services
ypcat: no such map in server's NIS domain
#

3) restored services file from /usr/newconfig/etc/services.. which I feel is the original one from OS build

Re: ftp issue

Steven Schweda — Tue, 31 May 2011 21:25:36 GMT

> In fact, I restored the original file w/o
> any luck

Also, "w/o any luck" is not a very detailed
description of what you tried, or what
happened when you tried it.

Knowing nothing, I'd guess that after you
change the nsswitch configuration, you'd need
to whack inetd to get it to try everything
again.

Re: ftp issue

infarakesh — Tue, 31 May 2011 21:28:24 GMT

yes.. no luck means.. updated those changes and tried to check ftp and it did not work

Re: ftp issue

Steven Schweda — Tue, 31 May 2011 21:31:33 GMT

> 2) # ypcat services
> ypcat: no such map in server's NIS domain

Really? That seems unusual. But, if there's
no NIS "services" map, then you probably want
an nsswitch.conf which says
services: files
instead of
services: files nis

> It should look something like:
>
> services: files

What he said.

Also potentially interesting:

ypwhich -m

Re: ftp issue

infarakesh — Tue, 31 May 2011 21:33:52 GMT

# ypwhich -m
netgroup.byuser yellow
netgroup.byhost yellow
netgroup yellow
ypservers yellow
group.byname yellow
group.bygid yellow
auto_home yellow
auto_master yellow
auto_direct yellow
passwd.byuid yellow
passwd.byname yellow
netid.byname yellow
hosts.byname yellow
hosts.byaddr yellow
publickey.byname yellow
# cat /etc/nsswitch.conf|grep -i services
services: files
#

Re: ftp issue

Steven Schweda — Tue, 31 May 2011 21:37:05 GMT

> yes.. no luck means.. updated those
> changes and tried to check ftp and it did
> not work

Which "those changes"? "tried to check" how,
exactly? As usual, showing actual commands
with their actual output can be more helpful
than vague descriptions or interpretations.

Was there another "inetd -c" in there
anywhere?

The whole Forum points system may not be
worth much, but it might make more sense if
you waited until you found the solution to
your problem before deciding how helpful a
particular response was.

Re: ftp issue

infarakesh — Tue, 31 May 2011 21:39:28 GMT

can we concentrate on only technical stuff?

see my earlier reply and if you can respond back.. thanks!

Re: ftp issue

Steven Schweda — Tue, 31 May 2011 21:39:59 GMT

> # ypwhich -m
> [...]

You win. No "services.byname". So you need
to use the "/etc/services" _file_.