How do I verify that it is listening on 21 and 23 ?
The wu-ftpd file in the /etc/xinetd.d directory says has the following :
service ftp
{
....
server = /usr/sbin/in.wuftpd
....
}
Similarly the file telnet in /etc/xinetd.d directory has the following :
service telnet
{
...
service = /usr/sbin/in.telnetd
...
}
And the /etc/services file has entries for ftp/telnet as follows :
ftp-data 20/tcp
ftp-data 20/udp
ftp 21/tcp
ftp 21/udp
telnet 23/tcp
telnet 23/udp
Do I need to get rid of those duplicate lines corresponding to UDP ?
I just tried removing lines corresponding to UDP and it worked !!!!
I am not sure why those entries corresponding to UDP are there in first
place
in my /etc/services file. That is how it was when I installed the system.
Anyway, Thanks a lot for all your help.
Regards,
Hiren Mehta
-----Original Message-----
From: 'Darrell A Escola' [mailto:darrell@descola.net]
Sent: Thursday, December 06, 2001 6:12 PM
To: MEHTA,HIREN (A-SanJose,ex1)
Cc: linux-net@vger.kernel.org
Subject: Re: setting up ftpd/telnetd on my linux machine
Just to verify - your xinetd is listening on ports 21 and 23?
If it is not listening on these ports, it has no way of knowing that it
should fork telnetd or wu-ftpd.
I am not real familiar with xinetd (I run Debian, using inetd), but it
sounds like it may not be listening on the proper ports, or the
configuration files for wu-ftpd and telnetd may not be set up to allow
access.
Are there ftpusers, hosts.allow, hosts.deny files that need to be
configured?
Darrell
On Thu, Dec 06, 2001 at 06:56:13PM -0700, MEHTA,HIREN (A-SanJose,ex1) wrote:
> I did ran strace on my xinetd process which was listening on the ports.
> My understanding is that when somebody connects using ftp, xinetd will
> do some more stuff and again start listening on the ports. But in my case,
> when I started ftp/telnet from windows client to the linux machine, the
> xinetd
> was still sitting on listening on the ports. So I guess, it is not even
> forking
> the in.wuftpd/telnetd processes. The configuration files for wuftpd will
be
> read by wuftpd when it is started. But in my case, wuftpd itself does not
> seem be starting.
>
> When I did ftp from the same machine, it worked fine without any problem
> and I could see xinetd getting out of listening and finally forking
> in.wuftpd.
>
> This is my local net. How do I verify whether there is any firewall or not
?
>
> Somehow it looks like xinetd does not come to know that some client is
> trying
> to start a session. Any explainations ?
>
> Hiren Mehta
> Software Design Engineer
> Agilent Technologies
>
>> From: Darrell A Escola [mailto:darrell@descola.net]
>> Sent: Thursday, December 06, 2001 5:41 PM
>>
>> The standard port for telnet is 23, for ftp is 21 - your windows clients
are
>> most likely talking to these ports.
>
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