Re: Newbie can't log into his own wu-ftpd server from PowerBook G4 (Mac OS X 10.2.8)

On Mon, 14 Feb 2005, Ted Keller wrote:

> First - many Unixs support binding orders - the order the resolver
> libraries choose to resolve names.  If your unix supports binding orders
> and you are running resolver library that has that support, you may be
> able to have it look at your /etc/hosts and not resolve to dns.

Ted, I am not sure where to look for binding orders and if I am running
resolver library with the support. Any help on this would be greatful. I
did look at my hosts file:

more /etc/hosts
127.0.0.1 localhost.localdomain localhost ANTian-AXP

# The following lines are desirable for IPv6 capable hosts
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts
192.168.0.32 Harvesters ANTian-A64
192.168.0.220 ANTian-AXP localhost

# The following lines are desirable for IPv6 capable hosts
# (added automatically by netbase upgrade)

::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhost

 
> Check for things like /etc/nsswitch.conf type of files.

more /etc/nsswitch.conf
# /etc/nsswitch.conf
#
# Example configuration of GNU Name Service Switch functionality.
# If you have the `glibc-doc' and `info' packages installed, try:
# `info libc "Name Service Switch"' for information about this file.

passwd:         compat
group:          compat
shadow:         compat

hosts:          files dns
networks:       files

protocols:      db files
services:       db files
ethers:         db files
rpc:            db files

netgroup:       nis

I am not sure what I am looking in here. It's all technical to me. ;)

 
> Second. Get the source - Get a gcc compiler - build it without DNS
> support.

I will try this second option if I cannot get the first option going.
Thank you in advance. :)

 
> > Ted, I just tested this and you're right! It did work (connected to
> > wu-ftpd server so fast -- woah) when Debian was connected to the Internet.
> > I also had to disable Guarddog (firewall) because it was blocking incoming
> > FTP access (have not configured it for LAN and will deal with it later)
> > -- disabled mode still had that long pause earlier without dial-up.
> >
> > So now what? Do I really need run a domain server? Isn't there a
> > configuration to have wu-ftpd ignore domain look up? I don't care about
> > looking up who and who server. I just want connections with IP addresses.
> > /etc/hosts has the server names I gave (e.g., ANTian-AXP). What's the best
> > way? Again, newbie here...
> >
> > On Sun, 13 Feb 2005, Ted Keller wrote:
> >
> > > To test.... connect your dialup - point to you ISP's DNS servers  - and
> > > attempt your connections.  It's ok that it doesn't resolve - just that the
> > > wu-ftpd gets an answer within a reasonable time.  That will confirm the
> > > theory.
> > >
> > > There are a number of devices that can operate as a DNS server.  Setting
> > > it up isn't difficult...  but will take some effort.
> > >
> > > On Sun, 13 Feb 2005, Phillip Pi wrote:
> > >
> > > > Ted, how would I configure that on a LAN? Do I really need a DNS server?
> > > > It is only three computers on the LAN. I did not compile wu-ftpd from
> > > > source. I got it from Debian's apt-get install command. Is there a
> > > > configuration file to edit? Again, I am new to this Linux stuff.
> > > >
> > > > On Sun, 13 Feb 2005, Ted Keller wrote:
> > > >
> > > > > Phillip,
> > > > >
> > > > > This sounds like a DNS timeout issue.  The ftp daemon issues a dns request
> > > > > to determine the domain of the connecting machine.  If no dns is
> > > > > available, it waits until the dns timeout process has occured (30 seconds)
> > > > > then continues to proces the request.  Your G4 client may have timers in
> > > > > it that are faster than the 30 second limit.
> > > > >
> > > > > Options...
> > > > >
> > > > > install some local dns server on your ftp unit.
> > > > > point to a valid ftp unit.
> > > > > recomplie ftpd without dns support.
> > > > >
> > > > > ted keller
> > > > >
> > > > >
> > > > > On Sun, 13 Feb 2005, Phillip Pi wrote:
> > > > >
> > > > > > Hello!
> > > > > >
> > > > > > I am a newbie with Linux (Debian v3.1; Sarge installer; Kernel 2.6.8), and
> > > > > > I seem to have troubles getting into my wu-ftpd v2.6.2(1) [from apt-get]
> > > > > > server remotely on a LAN (not used for Internet since I am on a measly
> > > > > > dial-up connection). It used to work in the past (two weeks ago or more)
> > > > > > even after a few minutes of waiting. I am not sure what caused this
> > > > > > problem. I tried both the standalone daemon and inetd setup for wu-ftpd,
> > > > > > but they resulted the same.
> > > > > >
> > > > > > Example:
> > > > > > $ ftp ANTian-AXP (also tried 192.168.0.220 IP address)
> > > > > >
> > > > > > Connected to ANTian-AXP.
> > > > > >
> > > > > > <<a long pause for a few minutes>>
> > > > > >
> > > > > > 421 Service is not available, remote server timed out. Connection closed.
> > > > > >
> > > > > >
> > > > > > I wonder if the long pauses are causing PowerBook G4 to time out/give up?
> > > > > > In Windows XP Professional SP2, ftp connection is a couple minutes and
> > > > > > eventually lets me log in. Even ftp to localhost, on the Debian box
> > > > > > running wu-ftpd, takes too long (a few minutes) but it is fine once I am
> > > > > > logged in the FTP server. Maybe I misconfigured something on the Debian
> > > > > > box?
> > > > > >
> > > > > >
> > > > > > In /var/log/messsages, I see (within the same second) from my PowerBook
> > > > > > G4:
> > > > > >
> > > > > > localhost wu-ftpd[3821]: connection from 192.168.0.28 [192.168.0.28]
> > > > > > localhost wu-ftpd[3821]: lost connection to 192.178.0.28 [192.168.0.28]
> > > > > > localhost wu-ftpd[3821]: FTP session closed
> > > > > >
> > > > > >
> > > > > > I am not sure if this is related. I can ssh (have to wait about 25-30
> > > > > > seconds) from PowerBook G4's ssh -2 -C command; SecureCRT v3.4.8 was
> > > > > > instant) and ping to this Debian box without problems.
> > > > > >
> > > > > > Any ideas on what's going on? Thank you in advance. :)