Unable to connect to a server from our AIX server via FTP


 
Thread Tools Search this Thread
Top Forums UNIX for Beginners Questions & Answers Unable to connect to a server from our AIX server via FTP
# 1  
Old 02-20-2020
Unable to connect to a server from our AIX server via FTP

Hi guys,
We are trying to connect to an FTP server from our AIX server. Getting the following message
Code:
# ftp 164.52.194.12
ftp: connect: A remote host did not respond within the timeout period.
ftp> open 164.52.194.12
ftp: connect: A remote host did not respond within the timeout period.
ftp>

However, we are able to reach out to the same server from our local PC (workstation) via powershell

Windows PowerShell
Copyright (C) 2015 Microsoft Corporation. All rights reserved.

Code:
PS C:\Users\LINC> ftp
ftp> open 164.52.194.12
Connected to 164.52.194.12.
220 Microsoft FTP Service
200 OPTS UTF8 command successful - UTF8 encoding now ON.
User (164.52.194.12:(none)):

The ftp services are enabled [uncommented] in the /etc/services file

Code:
# grep -i ftp /etc/services
ftp-data                20/tcp          # File Transfer [Default Data]
ftp-data                20/udp          # File Transfer [Default Data]
ftp                             21/tcp          # File Transfer [Control]
ftp                             21/udp          # File Transfer [Control]
ni-ftp                  47/tcp          # NI FTP
ni-ftp                  47/udp          # NI FTP
tftp                    69/udp          # Trivial File Transfer
tftp                    69/tcp          # Trivial File Transfer
sftp                    115/tcp         # Simple File Transfer Protocol
sftp                    115/udp         # Simple File Transfer Protocol
bftp                    152/tcp         # Background File Transfer Program
bftp                    152/udp         # Background File Transfer Program
softpc                  215/tcp         # Insignia Solutions
softpc                  215/udp         # Insignia Solutions
subntbcst_tftp  247/tcp         # SUBNTBCST_TFTP
subntbcst_tftp  247/udp         # SUBNTBCST_TFTP
mftp                    349/tcp         # mftp
mftp                    349/udp         # mftp
ftp-agent                574/tcp                # FTP Software Agent System
ftp-agent                574/udp                # FTP Software Agent System
pftp                    662/tcp         # PFTP
pftp                    662/udp         # PFTP
ftps-data                989/tcp                # ftp protocol, data, over TLS/SSL
ftps-data                989/udp                # ftp protocol, data, over TLS/SSL
ftps                    990/tcp         # ftp protocol, control, over TLS/SSL
ftps                    990/udp         # ftp protocol, control, over TLS/SSL
tftp-mcast              1758/tcp                # tftp-mcast
tftp-mcast              1758/udp                # tftp-mcast
etftp                    1818/tcp               # Enhanced Trivial File Transfer Protocol
etftp                    1818/udp               # Enhanced Trivial File Transfer Protocol
utsftp                  2529/tcp                # UTS FTP
utsftp                  2529/udp                # UTS FTP
aaftp                    2794/tcp               # aaftp
aaftp                    2794/udp               # aaftp
gsiftp                  2811/tcp                # GSI FTP
gsiftp                  2811/udp                # GSI FTP
odette-ftp              3305/tcp                # ODETTE-FTP
odette-ftp              3305/udp                # ODETTE-FTP
tftps                    3713/tcp               # TFTP over TLS
tftps                    3713/udp               # TFTP over TLS
exasoftport1    3920/tcp                # Exasoft IP Port
exasoftport1    3920/udp                # Exasoft IP Port
mftp                    5402/tcp                # MFTP
mftp                    5402/udp                # MFTP
#

The ports are open
Code:
# netstat -an|grep LIST|grep 20
tcp        0      0  *.2049                 *.*                    LISTEN
tcp4       0      0  *.3200                 *.*                    LISTEN
# netstat -an|grep LIST|grep 21
tcp        0      0  *.21                   *.*                    LISTEN

Checked the inetd.conf file, ftp isn't commented out
Code:
# cat inetd.conf
## @(#)62       1.17.3.4  src/tcpip/etc/inetd.conf, tcpinet, tcpip61N, 1024A_61N 5/27/10 21:56:33
## IBM_PROLOG_BEGIN_TAG
## This is an automatically generated prolog.
##
## tcpip61N src/tcpip/etc/inetd.conf 1.17.3.4
##
## Licensed Materials - Property of IBM
##
## COPYRIGHT International Business Machines Corp. 1993,2010
## All Rights Reserved
##
## US Government Users Restricted Rights - Use, duplication or
## disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
##
## IBM_PROLOG_END_TAG
##
## COMPONENT_NAME: TCPIP inetd.conf
##
## FUNCTIONS:
##
## ORIGINS: 26  27
##
## (C) COPYRIGHT International Business Machines Corp. 1993
## All Rights Reserved
## Licensed Materials - Property of IBM
##
## US Government Users Restricted Rights - Use, duplication or
## disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
##
#######################################################################
##
##                 Internet server configuration database
##
##      Services can be added and deleted by deleting or inserting a
##      comment character (ie. #) at the beginning of a line  If inetd
##      is running under SRC control then the "refresh -s inetd" command
##      needs to be executed for inetd to re-read the inetd.conf file.
##
##      NOTE: The TCP/IP servers do not require SRC and may be started
##      by invoking the service directly (i.e. /etc/inetd). If inetd
##      has been invoked directly, after modifying this file, send a
##      hangup signal, SIGHUP to inetd (ie. kill -1 "pid_of_inetd").
##
##      NOTE: The services with socket type of "sunrpc_tcp" and "sunrpc_udp"
##      require that the portmap daemon be running.
##      Also please use ## to designate comments in this file so that
##      the smit commands can edit this file correctly.
##
##      NOTE: When using IPv6 services, specify "tcp6" or "udp6" for the
##      protocol.  "tcp" and "udp" are interpreted as IPv4.
##
## service  socket  protocol  wait/  user    server    server program
##  name     type             nowait         program     arguments
##
ftp     stream  tcp6    nowait  root    /usr/sbin/ftpd         ftpd -d
telnet  stream  tcp6    nowait  root    /usr/sbin/telnetd      telnetd -a
shell   stream  tcp6    nowait  root    /usr/sbin/rshd         rshd
#kshell  stream  tcp     nowait  root    /usr/sbin/krshd        krshd
login   stream  tcp6    nowait  root    /usr/sbin/rlogind      rlogind
#klogin  stream  tcp     nowait  root    /usr/sbin/krlogind     krlogind
exec    stream  tcp6    nowait  root    /usr/sbin/rexecd       rexecd
#comsat dgram   udp     wait    root    /usr/sbin/comsat       comsat
#uucp   stream  tcp     nowait  root    /usr/sbin/uucpd        uucpd
#bootps dgram   udp     wait    root    /usr/sbin/bootpd       bootpd /etc/bootptab
##
## Finger, systat and netstat give out user information which may be
## valuable to potential "system crackers."  Many sites choose to disable
## some or all of these services to improve security.
##
#finger stream  tcp     nowait  nobody  /usr/sbin/fingerd     fingerd
#systat stream  tcp     nowait  nobody  /usr/bin/ps           ps -ef
#netstat stream tcp     nowait  nobody  /usr/bin/netstat      netstat -f inet
#
#tftp    dgram  udp6    SRC     nobody  /usr/sbin/tftpd         tftpd -n
#talk   dgram   udp     wait    root    /usr/sbin/talkd         talkd
ntalk   dgram   udp     wait    root    /usr/sbin/talkd         talkd
#
# rexd uses very minimal authentication and many sites choose to disable
# this service to improve security.
#
#rquotad  sunrpc_udp     udp     wait    root    /usr/sbin/rpc.rquotad rquotad 100011 1
#rexd    sunrpc_tcp     tcp     wait    root    /usr/sbin/rpc.rexd rexd 100017 1
#rstatd  sunrpc_udp     udp     wait    root    /usr/sbin/rpc.rstatd rstatd 100001 1-3
#rusersd sunrpc_udp     udp     wait    root    /usr/lib/netsvc/rusers/rpc.rusersd rusersd 100002 1-2
#rwalld  sunrpc_udp     udp     wait    root    /usr/lib/netsvc/rwall/rpc.rwalld rwalld 100008 1
#sprayd  sunrpc_udp     udp     wait    root    /usr/lib/netsvc/spray/rpc.sprayd sprayd 100012 1
#pcnfsd  sunrpc_udp     udp     wait    root    /usr/sbin/rpc.pcnfsd pcnfsd 150001 1-2
#echo   stream  tcp     nowait  root    internal
#discard        stream  tcp     nowait  root    internal
#chargen        stream  tcp     nowait  root    internal
daytime stream  tcp     nowait  root    internal
time    stream  tcp     nowait  root    internal
#echo   dgram   udp     wait    root    internal
#discard        dgram   udp     wait    root    internal
#chargen        dgram   udp     wait    root    internal
daytime dgram   udp     wait    root    internal
time    dgram   udp     wait    root    internal
## The following line is for installing over the network.
#instsrv stream tcp     nowait  netinst /u/netinst/bin/instsrv instsrv -r /tmp/netinstalllog /u/netinst/scripts
#imap2  stream  tcp     nowait  root    /usr/sbin/imapd imapd
#pop3   stream  tcp     nowait  root    /usr/sbin/pop3d pop3d
caa_cfg stream  tcp6    nowait  root    /usr/sbin/clusterconf clusterconf >>/var/adm/ras/clusterconf.log 2>&1
dtspcd  stream  tcp     nowait  root    /usr/dt/bin/dtspcd /usr/dt/bin/dtspcd
cmsd    sunrpc_udp      udp     wait    root    /usr/dt/bin/rpc.cmsd cmsd 100068 2-5
ttdbserver      sunrpc_tcp      tcp     wait    root    /usr/dt/bin/rpc.ttdbserver rpc.ttdbserver 100083 1
wsmserver       stream  tcp     nowait  root    /usr/websm/bin/wsmserver wsmserver -start
xmquery dgram   udp     wait    root    /usr/bin/xmtopas xmtopas -p3
#

Upon checking the firewall status , we are getting the following message

Code:
# lsfilt -a
Can not open device /dev/ipsec4_filt.

Please suggest what approach to take /checks to do in order to connect via FTP? Any specific firewall related checks we need to do ?

OS configuration:
Code:
# oslevel -r
6100-07
# uname -0a
uname: Not a recognized flag: 0
Usage: uname [-snlrvmaxupfFMWS:T:L]
# uname -a
AIX prdsap1 1 6 00F71E294C00
# oslevel -s
6100-07-00-0000
#

Regards,
Bruno


Moderator's Comments:
Mod Comment Welcome, please use code tags next time for your code and data, thanks

Last edited by vbe; 02-20-2020 at 04:53 AM..
# 2  
Old 02-20-2020
Greetings
Have you checked ftpd is running?
Are you on the same network as the PC or the Windows server? ( switches/routers can be configured to let only some ports open...)
can you ftp a nearby server on same lan, can you from the Windos server ftp your AIX?...
# 3  
Old 02-20-2020
Did you do a
Code:
traceroute

(or similar command in AIX) to your ftp server from the host you are having issues with?

Also, did you search the site first before asking this question?

I think this question has been asked and answered many times over the years.
# 4  
Old 02-20-2020
Yes, the ftpd service is active.

Code:
# lssrc -t ftp
Service       Command                  Description              Status
 ftp          /usr/sbin/ftpd           ftpd -d                  active
#

Windows PC and my AIX server are on the same LAN ,let's say LAN1

The server that i'm trying to connect to is on another LAN say LAN 2


I was successfully able to ping the AIX server from my local windows workstation

Here is the o/p:

Code:
C:\Users\LINC>ftp
ftp> open 172.16.80.80
Connected to 172.16.80.80.
220 prdsap1 FTP server (Version 4.2 Wed Jun 29 13:24:26 CDT 2011) ready.
500 'OPTS UTF8 ON': command not understood.
User (172.16.80.80:(none)): root
331 Password required for root.
Password:
230-Last unsuccessful login: Wed Jan 22 17:40:48 GMT+05:30 2020 on /dev/pts/0 from 172.16.80.85
230-Last login: Thu Feb 20 14:29:04 GMT+05:30 2020 on ftp from ::ffff:172.16.80.5
230 User root logged in.
ftp> dir
200 PORT command successful.
150 Opening data connection for /bin/ls.
total 18008
-rw-------    1 root     system           74 Feb 06 18:55 .TTauthority
-rw-------    1 root     system          101 Feb 06 18:55 .Xauthority
-rw-r--r--    1 root     system          268 May 05 2019  .desksetdefaults
drwxr-xr-x   11 root     system         4096 Feb 06 18:56 .dt
-rwxr-xr-x    1 root     system         3970 Dec 22 2011  .dtprofile
drwxr-xr-x    3 root     system          256 Dec 22 2011  .java
drwxr-x---    3 root     system          256 Dec 26 2018  .sapinst
drwxr-x---    2 root     system         4096 Sep 05 2017  .sdtgui
-rw-------    1 root     system        10816 Feb 20 13:45 .sh_history
drwx------    2 root     system          256 Dec 23 2011  .topasrecrc
-rw-------    1 root     system          169 Feb 10 11:58 .vi_history
-rw-rw-r--    1 root     system            3 Feb 06 18:55 .wmrc
drwxr-xr-x    2 root     system         4096 Dec 22 2011  TT_DB
-rw-r--r--    1 root     system        13500 Nov 16 18:57 WebSM.pref
-rw-r--r--    1 root     system           84 Jan 17 2012  WebSM.pref_wsmmonitoring.data
drwxr-xr-x    4 root     system          256 Dec 22 2011  admin
drwxr-x---    2 root     audit           256 Sep 15 2011  audit
drwxr-xr-x    3 root     system          256 Jan 24 2013  backup
lrwxrwxrwx    1 bin      bin               8 Dec 22 2011  bin -> /usr/bin
drwxr-xr-x    2 root     system          256 Jan 17 2012  bkp
drwxr-xr-x    2 root     system          256 Jan 17 2012  bkup
-rw-r--r--    1 root     system         6263 Aug 30 2017  bosinst.data
-rw-r--r--    1 root     system          194 Jan 22 12:25 con.sh
-rw-r--r--    1 root     system            0 Dec 22 2011  configassist.log
-rw-r--r--    1 root     system          182 Jan 22 12:21 consumption.sh
-rw-------    1 root     system      3218089 Feb 27 2018  core
drwxrwxrwx   17 root     system       139264 Dec 17 15:51 databackup
drwxrwxr-x    5 root     system         8192 Feb 19 23:55 dev
drwxr-xr-x   16 root     system         4096 Dec 22 2011  esa
drwxr-xr-x   36 root     system         8192 Feb 07 09:45 etc
drwxr-xr-x    7 bin      bin             256 Jan 22 10:48 home
-rw-r--r--    1 root     system        11087 Aug 30 2017  image.data
lrwxrwxrwx    1 bin      bin               8 Dec 22 2011  lib -> /usr/lib
drwx------    2 root     system          256 Dec 22 2011  lost+found
drwxr-xr-x  176 bin      bin            8192 Mar 07 2017  lpp
drwxr-xr-x    2 root     system          256 Jan 12 2017  ltodrv
drwxr-xr-x    2 bin      bin             256 Sep 15 2011  mnt
drwxr-xr-x   20 root     system         4096 Jan 23 2012  opt
drwxr-xr-x   12 orap01   dba            4096 Feb 15 2017  oracle
drwxr-xr-x    4 pconsole pconsole        256 Dec 22 2011  pconsole
dr-xr-xr-x    1 root     system            0 Feb 20 14:32 proc
drwxrwxrwx   13 root     system         4096 Jan 23 2013  sapcd
drwxr-xr-x    3 root     system          256 Dec 23 2011  sapmnt
drwxr-xr-x    3 bin      bin             256 Dec 22 2011  sbin
-rw-r--r--    1 root     system      5493447 Aug 13 2019  smit.log
-rw-r--r--    1 root     system        28230 Aug 13 2019  smit.script
-rw-r--r--    1 root     system        48118 Aug 13 2019  smit.transaction
-rw-r--r--    1 root     system        40871 Apr 04 2012  syslog-tmp
drwxr-xr-x    2 root     system          256 Jan 17 2012  temp1
drwxrwxr-x    2 root     system          256 Dec 22 2011  tftpboot
drwxrwxrwt   59 bin      bin            8192 Feb 20 14:32 tmp
lrwxrwxrwx    1 bin      bin               5 Dec 22 2011  u -> /home
drwxr-xr-x    3 root     system          256 Dec 23 2011  uar
lrwxrwxrwx    1 root     system           21 Dec 22 2011  unix -> /usr/lib/boot/unix_64
drwxr-xr-x   51 bin      bin            4096 Jan 23 2012  usr
drwxr-xr-x   35 bin      bin            4096 Dec 23 2011  var
-rw-r--r--    1 root     system           58 Nov 16 18:57 websm.log
-rw-r--r--    1 root     system         1282 Feb 07 02:15 websm.script
-rw-r--r--    1 root     system        69333 Feb 07 02:15 websm1.transaction
-rw-r--r--    1 root     system         1152 Jan 20 2012  wsmcustomtools.data
226 Transfer complete.
ftp: 4133 bytes received in 0.27Seconds 15.60Kbytes/sec.
ftp>

--- Post updated at 10:24 AM ---

Quote:
Originally Posted by Neo
Did you do a
Code:
traceroute

(or similar command in AIX) to your ftp server from the host you are having issues with?

Also, did you search the site first before asking this question?

I think this question has been asked and answered many times over the years.
Hi, i did search this site and went across 10-12 different posts/questions which were of similar nature,still haven't found a solution .

Yes, did do a traceroute from my host to the ftp server :

Code:
# traceroute 203.112.144.202
trying to get source for 203.112.144.202
source should be 172.16.80.80
traceroute to 203.112.144.202 (203.112.144.202) from 172.16.80.80 (172.16.80.80), 30 hops max
outgoing MTU = 1500
 1  172.16.80.100 (172.16.80.100)  31 ms  0 ms  0 ms
 2  172.16.80.100 (172.16.80.100)  0 ms !H * *
 3  172.16.80.100 (172.16.80.100)  0 ms !H * *
 4  172.16.80.100 (172.16.80.100)  0 ms !H *  0 ms !H
#

Thing is the infrastructure @ my organization where i joined 2 weeks back is a mess, no proper OS monitoring/maintenance was done for quite sometime . I immediately need to transfer important business docs from my SAP AIX server to ftp server.

Have checked the services file, ports,inetd.conf file. Tried checking the firewall status which led to this

Code:
# lsfilt -a
Can not open device /dev/ipsec4_filt.

Would be extremely grateful if you can guide me to look for areas where i can troubleshoot ?

Regards,
Bruno
# 5  
Old 02-20-2020
You need to first try to ping from the host to the ftp server and see if you get a reply.

Did you do that, already?

However, according to your traceroute output, it it looks like you cannot ping, for sure.

Is that right?
# 6  
Old 02-20-2020
Yes, that's right .
I tried pinging from the host ( which is my SAP server running on AIX) to the FTP server

Result : unsuccessful ,cannot ping

Code:
# traceroute 203.112.144.202
trying to get source for 203.112.144.202
source should be 172.16.80.80
traceroute to 203.112.144.202 (203.112.144.202) from 172.16.80.80 (172.16.80.80), 30 hops max
outgoing MTU = 1500
 1  172.16.80.100 (172.16.80.100)  31 ms  0 ms  0 ms
 2  172.16.80.100 (172.16.80.100)  0 ms !H * *
 3  172.16.80.100 (172.16.80.100)  0 ms !H * *
 4  172.16.80.100 (172.16.80.100)  0 ms !H *  0 ms !H
# ping -c 5 203.112.144.202
PING 203.112.144.202: (203.112.144.202): 56 data bytes

--- 203.112.144.202 ping statistics ---
5 packets transmitted, 0 packets received, 100% packet loss
#


But, when i pinged the same FTP server from my local PC/Workstation (in the same LAN as my SAP server) it was successful

Windows PowerShell
Copyright (C) 2015 Microsoft Corporation. All rights reserved.
Code:
PS C:\Users\LINC> ftp
ftp> open 164.52.194.12
Connected to 164.52.194.12.
220 Microsoft FTP Service
200 OPTS UTF8 command successful - UTF8 encoding now ON.
User (164.52.194.12:(none)): saplincpen
331 Password required
Password:

# 7  
Old 02-20-2020
To keep the forums high quality for all users, please take the time to format your posts correctly.

First of all, use Code Tags when you post any code or data samples so others can easily read your code. You can easily do this by highlighting your code and then clicking on the # in the editing menu. (You can also type code tags [code] and [/code] by hand.)

Please read and follow the rules about code tags and let us know you will abide by the rules:



Second, avoid adding color or different fonts and font size to your posts. Selective use of color to highlight a single word or phrase can be useful at times, but using color, in general, makes the forums harder to read, especially bright colors like red.

Third, be careful when you cut-and-paste, edit any odd characters and make sure all links are working property.

Thank You.

The UNIX and Linux Forums
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Not able to connect to new FTP server

Hi All, We have done new FTB setup. I am not able to to connect to this new target server. Here is the new setup to send files to the FTB : - Login : FTB-TAN-DEV-SAP - Protocol : SFTP - Port : 54322 - Hostname : ftb-dev.apj.hp - Env : DEV - Target ID : 3225 I tried connecting to the... (5 Replies)
Discussion started by: ROCK_PLSQL
5 Replies

2. Solaris

Unable to connect sun server.

Hi, I am unable to connect sun server, server model is sun fire v440 on server 2 ports are there. serial management, and network management. I would like to know how to connect serial port if I dont have com port on my system? and on Network Management no ip address is configured. ... (2 Replies)
Discussion started by: manoj.solaris
2 Replies

3. Linux

Unable to connect to Server machine from a client machine using ftp service

Hi, Could you please help me with the below issue.. I'm running RHEL6 OS on both server (192.168.0.10) and client machines (192.168.0.1). I'm trying to connect to server from the client machine using ftp service. I have installed vsftpd daemon on both the machines. I'm getting... (4 Replies)
Discussion started by: raosr020
4 Replies

4. UNIX for Advanced & Expert Users

Public key to connect from one ftp server to other server

How to generate public key to connect from one ftp server to other server to use in scripting. (1 Reply)
Discussion started by: sridhardwh
1 Replies

5. Linux

Generate public key to connect from one ftp server to other server

How to generate public key to connect from one ftp server to other server to use in scripting. (0 Replies)
Discussion started by: sridhardwh
0 Replies

6. Red Hat

unable to connect remote server using ssh

hi all i am unable to connect remote server using ssh but i am able to ping the server ssh service is running. (5 Replies)
Discussion started by: nikhil kasar
5 Replies

7. UNIX for Advanced & Expert Users

Unable to use FTP command to connect from one server to another

Hi, I have two unix servers A and B. from A i am trying to use the ftp command to connect to B but I am getting the "ftp: connect: A remote host refused an attempted connect operation." I checked the following things : 1.) Unix Server details for A and B after running the command uname -a... (3 Replies)
Discussion started by: mick_000
3 Replies

8. HP-UX

[Solved] Unable to rename file in ftp server .Net:FTP perl

Hello All, I am trying to connect to ftp server and get the files. Also i need to rename the file in other ftp dir. rename method is not allowing me to rename the file in other dir. When i tried copy command by using net::FTP:FILE then perl says it is not installed. Can some body help me to... (2 Replies)
Discussion started by: krsnadasa
2 Replies

9. AIX

Unable to connect to AIX server through xmanager

Hi, I have xmanager installed on my windows PC. But I am not able to connect to AIX server. It's giving the error as follows: The X11 forwarding request was rejected. Graphics mode is not coming up in AIX server. Please help as I have to install oracle patchset urgently. (1 Reply)
Discussion started by: dwiravi
1 Replies

10. Shell Programming and Scripting

ftp script not able to connect to ftp server.

I have the following ftp script to get files from a remote location. However, on running the script I find that I am not even able to connect to ftp server. I am able to connect to ftp server using other GUI ftp tools like WS_FTP using the same IP. IP used here is a dummy IP. What can go... (3 Replies)
Discussion started by: gram77
3 Replies
Login or Register to Ask a Question

Featured Tech Videos