FTP connection

Posted on 2011-03-21
Last Modified: 2012-05-11
when I FTP abc(unix serve name) from "RUN",
it shows:
 >ftp:connect:Unknow error number

what happen ?how to fix it ?

note that I can putty "abc" login unix, and also I did a lot this to FTP data file between Windows and Unix in different company

Question by:SayYou_SayMe
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
  • 2
  • +1

Accepted Solution

sshah254 earned 100 total points
ID: 35185878
Go to Run - > Cmd

In the DOS box, ping abc - does that work.

If that works, then try ftp abc and see if that works or not.

Check your firewall if you have any running on he machine and see if FTP ports 21&22 are blocked or not.

If there is a firewall between your machine and the UNIX machine (abc) and if FTP is blocked by that firewall, then talk to your network admin.

LVL 12

Assisted Solution

upanwar earned 200 total points
ID: 35186186
First check the ping to the ftp box.

Then try to nslookup ftp box.

Start ---> Run ---> cmd

ping <Server Name>

nslookup <Server Name>

If both works then try to execute below given command.

telnet <server name> 21

If you get escape character then everything works file.

If nothing works, Please show us the output of above given commands.

Author Comment

ID: 35194582
thanks guys

1. ping abc, it works

ping abc

Pinging abc [] with 32 bytes of data:

Reply from bytes=32 time=77ms TTL=61
Reply from bytes=32 time=69ms TTL=61
Reply from bytes=32 time=67ms TTL=61
Reply from bytes=32 time=68ms TTL=61

Ping statistics for
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 67ms, Maximum = 77ms, Average = 70m

2. nslookup abc, it DID NOT work
*** Can't find server name for address Non-existent domain

Non-authoritative answer:

3. telnet abc 21,  it DID NOT work

Connecting To abc..Could not open connection to the host, on port 21: Conne
ct failed

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!


Assisted Solution

m_walker earned 200 total points
ID: 35194606
Can you ftp to its IP Address :  (from your ping above).

My guess, based on the telnet not working, is ftp is not setup on the linux box.  you can try to scp (its like ftp but via ssh).  A free program is winscp

Or have a look on the linux box and ensure ftp is setup.

Author Comment

ID: 35194659

it shows:

 >ftp:connect:Unknow error number

Assisted Solution

m_walker earned 200 total points
ID: 35194934
I am thinking that either ftp is not running on the linux box or the linux box as iptables running blocking ftp traffic.

Differnet versions and flavors of linux have differnet ftp deamons so a little hard to say how to check if ftp is running.  You could check your services and see if there is an ftp of some sort in the list.

on fedora you can type setup, then select services and scroll down.

for the iptables check
iptables -L -v
should show all the main rules and tables.
LVL 12

Assisted Solution

upanwar earned 200 total points
ID: 35195639
Just do the followng and update what you are getting.

telnet 21

Featured Post

Get 15 Days FREE Full-Featured Trial

Benefit from a mission critical IT monitoring with Monitis Premium or get it FREE for your entry level monitoring needs.
-Over 200,000 users
-More than 300,000 websites monitored
-Used in 197 countries
-Recommended by 98% of users

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Attention: This article will no longer be maintained. If you have any questions, please feel free to mail me. Please see for the updated article. It is avail…
I promised to write further about my project, and here I am.  First, I needed to setup the Primary Server.  You can read how in this article: Setup FreeBSD Server with full HDD encryption (…
Learn several ways to interact with files and get file information from the bash shell. ls lists the contents of a directory: Using the -a flag displays hidden files: Using the -l flag formats the output in a long list: The file command gives us mor…
This video shows how to set up a shell script to accept a positional parameter when called, pass that to a SQL script, accept the output from the statement back and then manipulate it in the Shell.

729 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question