Linux-Networking Digest #587, Volume #10 Mon, 22 Mar 99 00:13:34 EST
Contents:
trying Linux DNS : No response from server msg (Jorge Nagasaki)
help connect to isp ("Evangelos Tzannidakis")
RAID ([EMAIL PROTECTED])
Re: Howto compile 2.2 Kernel with redhat 5.2 - for beginners, installing, windows
users etc (SillyBilly)
Re: IP Forwarding (Steve Vertigan)
Re: Setting up a NFS server ([EMAIL PROTECTED])
Re: Need help setting up a Linux router (James Beck)
fetchmail but not mail! (Taro Fukunaga)
recvfrom: connection refused ([EMAIL PROTECTED])
Re: What is the best Linux to install? (Eddy S)
Re: Cable Modems & Linux (Stuart Lynne)
Routing packets into the firewall (Jeff Bishop)
Re: Cable Modem and Networking. (Jim Roberts)
Re: Fetchmail posts two copies of each mail... ? ("Brady")
PLIP with 2.2.3? (Preston F. Crow)
PLIP and bridging (Preston F. Crow)
Re: ip-masq / port-forwarding question ? (Stuart Lynne)
Low level networking (Alfred REYNOLDS 3031616)
----------------------------------------------------------------------------
Date: Sun, 21 Mar 1999 23:15:34 -0300
From: Jorge Nagasaki <[EMAIL PROTECTED]>
Subject: trying Linux DNS : No response from server msg
I have one Linux machine and one NT machine in a LAN, and are
learning about DNS configuration on Linux ( You could why I do
want DNS in such a configuration, I m just leraning ...)
I setup DNS reading the DNS-HOWTO and used some default sample
files in the RH5.2.
When I do a nslookup on Linux machine I get the messages (that's looks
good):
>Server: localhost
Address: 127.0.0.1
and then if I enter the linux host name:
#machine1
I get the message:
>localhost can't find machine1: No response from server
Can you help to figure out what is wrong?
Many thanks (I m a beginner in DNS ..)
------------------------------
From: "Evangelos Tzannidakis" <[EMAIL PROTECTED]>
Subject: help connect to isp
Date: Mon, 22 Mar 1999 02:33:23 GMT
-- I had a dip script to connect me to my isp. It all worked fine, untill I
changed isp.
A dip -t session revealed that here is no prompting for login or password
just a bunch of
#}y}}A} ..... or something like it. Windows seems to handle it ok, but with
Linux? ...how?
Thanks in advance.
Van Tzannidakis
------------------------------
From: [EMAIL PROTECTED]
Subject: RAID
Date: Mon, 22 Mar 1999 02:11:46 GMT
I am currently working on a project to implement a logical RAID system, and I
am looking for source codes to get some basic ideas. Could you tell me where
i can find the RAID source code ? Your help will be greatly appreciated.
Have a nice day,
Sylvia
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------------------------------
From: SillyBilly <[EMAIL PROTECTED]>
Crossposted-To: aus.computers.linux,comp.os.linux.hardware,comp.os.linux.setup
Subject: Re: Howto compile 2.2 Kernel with redhat 5.2 - for beginners, installing,
windows users etc
Date: Sun, 21 Mar 1999 21:46:33 -0500
-simplified redhat kernel play for newbies -
you can reinstall everything from scratch if you mess up
go read http://www-stu.calvin.edu/~clug/users/jnicho38/goto22.html
basically:
skip this ------------------------------------------------------
if you come from windows(no flames please) and are totally new to linux,
make sure you install windows dos connectivity when installing redhat..
then login as root,
type startx,
and select the control panel in administration
(or type in a terminal window /usr/bin/control-panel)
in dos this would mean c:\usr\bin\control-panel, the / is the root
directory
scroll down to the lady with the stick then go to file systems local
file systems and pick the partitions hda is your first harddrive, hdb is
the slave on the 1st ide channel, hdc is master on the second ide
channel, and the numbers after them are the partitions, the max limit
for primary partitions is 4 so the extended partitions start with 5..
.. dos/windows cannot handle more than one primary partition
you probably have /dev/hda1 as your windows partition and /dev/hdb5 as
your linux partition
select a partition hda1 from the drop down list, select vfat from the
second drop list, then as the mount point type /mnt/windisk or whatever
you prefer..
this will "mount" the windows fat partition so you can read all the
files from it in linux
you can get all this by typing
mount -t vfat /dev/hda1 /mnt/windisk
then in control panel go to activate configuration and you are ready to
browse your windows files typing
cd /mnt/windisk/
dir
one more thing.. in unix caps and lowercase matters.. cd PROG is not the
same as cd prog
end skip--------------------------------------------------
- get source at www.kernel.org - i have 2.2.3 .. find the
linux-2.2.3.tar.gz and download it to your harddrive in windows
they say you should get the even ending ones(eg 2.2.2 and 2.2.4 cause
ones ending in odd, eg 2.2.1, 2.2.3, are for testing.. well i have no
probs
- get redhat 5.2 updates for 2.2 kernels at ftp.redhat.com/mirrors.html
they dont have the source only some modutils and initscripts and stuff
updates that you must must have
start linux
login as root
startx
start a terminal
- got to your linux source directory:
cd /usr/src
- delete the file called "linux", which is a soft link to your
linux-2.0.36 directory
rm linux
- move your kernel source you downloaded to /usr/src
cp /path_to/linux-2.2.3.tar.gz /usr/src
- i use kde with rightclick and archiver and extract the files from the
tar.gz source but you can do a
gzip -d *2.2.3*
tar -xvf *2.2.3*.tar
meaning gzip decompress, and if that is the only .gz file there then you
can just type gzip -d lin* to save typing .. you can do a dir *, or dir
lin* or dir lin*2.2.3* then see what programs will be affected, then the
command.. saves lotsa typing then tar xtract the decompressed gzip
file.. zip is compressing, gzip is gnu zip, tar is making one huge file
from many small ones...
- everything should be decompressed to a newly created /usr/src/linux
directory.. if we hadnt removed the softlink before.. that linux
softlink would have sent everything decompressed to it to the
linux-2.0.36 directory overwriting everything..
now rename(move) this linux directory to
mv linux linux-2.2.3
- create the soflink to this new directory (the one we deleted before
pointed to /usr/src/linux-2.0.36 directory.. make the new one like this
ln -s linux-2.2.3 linux
create link, make it soft, to linux-2.2.3, and name the link linux
the -s soft is needed otherwise the link will point to the file
locations on the harddrive node cluster, and not the file name within
the file system.. that would be a hard link.. and in case you deleted
the linux-2.2.3 directory then the hard link would still point to the
harddrive node.. the file wouldn't be really deleted
now you have the source installed..
anytime you need to recompile the kernel you just come to /usr/src/linux
(which will actually take you to /usr/src/linux-2.2.3 and type make
xconfig or make menuconfig)
install the rpm packages you downloaded
go to the download folder cd /mnt/windisk/download or whereever you put
the rpms updates you just downloaded
rpm -Uvh *.rpm
- now assuming you are in x window
start a terminal, and type
cd /usr/src/linux
make xconfig
you can also get by with "make menuconfig", or just "make config" alone
really sucks
select all you need... play around..
for some reason my modules dont load right so i didnt use any modules..
make dep
make clean
make zImage
compiling zImage(the kernel) will take a long long time..
you will see a lot of garbage on the screen.. all of it starting with
gcc and a lot of options.. gcc is the gnu c compiler.. its all really so
cool!
anyway, go get a coffee.. once that is done you have the new 2.2.3
kernel under /usr/src/linux/arch/i386/boot/zImage
if you selected modules, also
make modules
make modules_install
cd /lib/modules
rm preferred
ln -s 2.2.3 preferred
then
cd /boot
cp /usr/src/linux/arch/i386/boot/zImage /boot/zImage
edit your /etc/lilo.conf file by typing
cd /etc
pico lilo.conf
and find the line where it says
image =/boot/vmlinuz-2.0.36-07
label linux
insert a line before it and change the label on this second line to
look like this
image = /boot/zImage
label newlinux
image = /boot/vmlinuz-2.0.36-07
label oldlinux
the first line zImage kernel will be loaded by default, you can change
that by holding down Shift, and hitting Tab then typing oldlinux at the
LILO prompt
but first you have to update the partition boot sector by typing
lilo
this will use the lilo.conf file to update your boot info
if you are booting from a floppy, then get a new floppy and insert it
cd /usr/src/linux
make zdisk
oh i almost forgot.. if you have modules type
depmod -a
maybe this will solve my headaches with modules
well good luck :)
reboot your machine and pray
if everything goes fine you wont see a kernel panic
if the boot stops.. well.. then try booting linux again and at the LILO
prompt hit the Tab key and type oldlinux.. if you really screw up then
get your shiny redhat cd and reinstall redhat and give it another try
------------------------------
From: [EMAIL PROTECTED] (Steve Vertigan)
Subject: Re: IP Forwarding
Date: Mon, 22 Mar 1999 03:16:36 GMT
Cameron Donaldson <[EMAIL PROTECTED]> wrote thus:
>Hi...
>
>I just got linux installed a couple days ago (I've actually had it
>installed many times before)...
>
>I finally got my ppp dial up connectiong running properly, and would
>like to set up a web page (just to kind of test things out)...
>Unfortunatly, i have a dynaminc IP :o( ... Is there a way i can have an
>address set up in linux that will forward the user to my current ip ??
Check out www.dhis.org. Another alternative is to have a static page hosted
on your ISP and have it updated whenever you go online to show your most
recent address.
Regards,
--Steve
------------------------------
From: [EMAIL PROTECTED]
Subject: Re: Setting up a NFS server
Date: Mon, 22 Mar 1999 03:00:03 GMT
Having just been through this discussion I can offer a titbit.
You don't have a problem, you have a security feature. ;-)
On the server:
You can either add to the hosts.deny file one line at the top.
portmap: ALL EXCEPT .localdomain.address
or
in the hosts.allow file
portmap: .localdomain.address
man 5 hosts_access
for more info
Kosta.
In article <[EMAIL PROTECTED]>,
Olaf Meyer <[EMAIL PROTECTED]> wrote:
> Raymond Doetjes <[EMAIL PROTECTED]> writes:
> > Be sure that the portmapper runs on your cleints asswell.
> >
> > Raymond
>
> This is not the problem. I am running portmap on the clients as well.
>
> Olaf
>
> --
> Olaf Meyer | mailto:[EMAIL PROTECTED] | _~o
> Computer and Information Science | http://www.seas.upenn.edu/~olafm | _-\_<,
> University of Pennsylvania | | (*)/'(*)
> Philadelphia, PA 19104-6389, USA | PGP: finger -l [EMAIL PROTECTED]
>
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------------------------------
From: James Beck <[EMAIL PROTECTED]>
Subject: Re: Need help setting up a Linux router
Date: Sun, 21 Mar 1999 19:17:59 -0800
root wrote:
>
> I am trying to build up a Linux router for my basement LAN...
Me too (also in my basement!). My setup is like this...
PPP ____________________ |-----
206.xxx.xxx.xxx |Firewall | |
Other
=====>=============| |===>===Ehthernet====>====|=====
Local
|eth1-192.168.42.X | Hub |
Machines
|___________________| |-----
All the machines on the local network can ping each other fine. The
firewall machine can ping
everyone and the internet. The local machines are not getting out,
though (rather the point of
the firewall, of course).
I'm running the stock RH 5.1 install with the 2.0.36 kernel. Questions
are this:
1) Do I need to do a kernel recompile ? If so what features ( is
firewall HOWTO correct?)
2) What does the routing dialog of the network control panel look like
for a working setup?
(I do have IP forwarding on)
I feel that I'm so close here, and that there's probably some subtle
routing thing not properly set up. Any help is very very greatly
appreciated.
Jim
------------------------------
From: Taro Fukunaga <[EMAIL PROTECTED]>
Subject: fetchmail but not mail!
Date: Sun, 21 Mar 1999 19:19:03 -0800
I'm not sure why, but when I use fetchmail (MkLinux DR3, RedHat 5.0), I
download email, but they're not in /var/spool/mail/username nor anywhere
else. Where could it be? Maybe I'm not downloading anything?
Sendmail is also running as a daemon, polling every ten seconds. It is
version 8.8.8.
No problems with netscape (which I run on the client, which is another
Linux machine), but I want to use fetchmail on the server.
I am using fetchmail 4.4.0 on an IP masquerading machine, and I am
running fetchmail on the server.
The contents of my .fetchmailrc file on the IP masq machine looks like
this:
poll myisp.com
protocol pop3
user username
password mypassword
smtphost "smtp.earthlink.net"
Any suggestions would be appreciated.
====================
Taro Fukunaga
[EMAIL PROTECTED]
------------------------------
From: [EMAIL PROTECTED]
Subject: recvfrom: connection refused
Date: Sun, 21 Mar 1999 17:19:28 GMT
Hi all!
I have encountered a problem while programming with sockets.
Briefly, a "connection refused" error is returned from a recvfrom() in a
socket from which I have maked sendto() before. But, if I don't make that
call to sendto(), recvfrom() blocks waiting for a response (i.e., all seems
to work fine).
Both sendto() and recfrom() calls are maked in the same machine, using
localhost over a Linux Debian system with kernel 2.2 prerrelease 6.
Does anyone know which can be the problem (and a fix for it...)?
Thank you very much in advance.
+++++++++++++++++++++++++++++++++++++++++++
C�sar F. Acebal
[EMAIL PROTECTED]
Software Engineering Undergraduate
University of Oviedo
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------------------------------
From: [EMAIL PROTECTED] (Eddy S)
Crossposted-To:
alt.os.linux,comp.os.linux,comp.os.linux.misc,comp.os.linux.setup,comp.os.linux.redhat,alt.os.linux.slackware
Subject: Re: What is the best Linux to install?
Date: Mon, 22 Mar 1999 03:46:47 GMT
I'm totally new to Linux. Just bought RH5.2 last week and installed
it. I must say that installation is automatic. No problem at all,
except with starting the X-windows. But the following night after
running Xconfigurator and "Custom" select the monitor type, it works
well.
Never tried any other distribution, but so far I'm quite satisfied
with RH. At least it let me started easily as newbie.
Eddy
Gene Wilburn <[EMAIL PROTECTED]> wrote:
>No matter where you travel to, you'll always meet someone coming the
>opposite direction.
>
>I installed SuSE 6.0 today (my third time installing a SuSE distro) and
>played with KDE. Absolutely hated it. I much prefer a simple fvwm2 with
>not much in it (I'm minimalist by nature).
>
>Also greatly prefer the Red Hat installation over SuSE and find it more
>trouble free.
>
>Others will doubtless have the opposite experience / reaction. That's
>what makes Linux so interesting. You're not stuck with a single point of
>view (a la MS).
>
>Gene
>
------------------------------
Subject: Re: Cable Modems & Linux
Reply-To: [EMAIL PROTECTED]
From: [EMAIL PROTECTED] (Stuart Lynne)
Date: Mon, 22 Mar 1999 04:12:27 GMT
In article <[EMAIL PROTECTED]>,
Randy Kayfish <[EMAIL PROTECTED]> wrote:
>Is it possible to have a Cable modem and a home lan work off the same nic? No
>matter what I try it doesn't work. I don't want access between machines
>through the internet I just want my lan and my internet to work from the same
>nic. I would like to get Samba going. I have my Cable modem plugged into a
>hub and both machines plugged in there as well. I thought if I had another
>gateway (or something. I'm not a networking guru) I could use 1 nic for 2
It's a) a bad idea and b) something that probably needs a networking gure to
set up if you *really* wanted to do it.
Most likely a second ethernet card is cheaper than the required guru.
--
Stuart Lynne <[EMAIL PROTECTED]> 604-461-7532 <http://edge.fireplug.net>
PGP Fingerprint: 28 E2 A0 15 99 62 9A 00 88 EC A3 EE 2D 1C 15 68
------------------------------
From: Jeff Bishop <[EMAIL PROTECTED]>
Subject: Routing packets into the firewall
Date: Sun, 21 Mar 1999 22:17:57 -0600
Reply-To: [EMAIL PROTECTED]
I need some pointers in taking packets aimed at a box behind the
firewall, and routing them.
The network has a masqueing router, talking to a masqueing firewall (a
la "LINUX Network Toolkit" by Paul G. Sery). I have no problem routing
packets out of the network and onto the Internet, but I need to go the
other way for smtp packets to an Exchange server inside.
TIA!
--
Jeff
------------------------------
From: [EMAIL PROTECTED] (Jim Roberts)
Subject: Re: Cable Modem and Networking.
Date: Mon, 22 Mar 1999 04:06:55 GMT
In article <[EMAIL PROTECTED]>,
Randy Kayfish <[EMAIL PROTECTED]> writes:
> Is it possible to have a Cable modem and a home lan work off the same
> nic? No matter what I try it doesn't work. I don't
> want access between machines through the internet I just want my lan and
> my internet to work from the same nic. I would
> like to get Samba going. I have my Cable modem plugged into a hub and
> both machines plugged in there as well. I thought if
> I had another gateway (or something. I'm not a networking guru) I could
> use 1 nic for 2 different things. Is this at all possible
> or will I need 1 nic for the Internet and 1 for my Lan? Does the Cable
> modem own the nic? How do you run more than 1
> network off of 1 nic? Any help appreciated as I am just trying to get
> things going and am looking for any info/how to's I can
> find. Thanks.
>
> Randy
>
>
>
Randy,
Providing you are using the "private" IP's for the other nodes on your
home network, it is quite possible to have both on the same nic.
Your cable provider will block the "pirvate" address so all you have to
do is set direct routes to and from the box that has the ip for your cable
connection.
ie: if your cable node is 24.x.x.10 and your one of your private addresses
is 198.x.x.5 then on the cable node you world have to add a route to the
private address network like route add -net 198.x.x.0 gw 24.x.x.10. And
on the private box you would have to add a return route to the 24.x.x.0
net like, route add -net 24.x.x.0 gw 198.x.x.5.
Since DNS will not work for your private addresses, each host will need all
of the ip to host name addresses in the /etc/hosts files.
'
--
Jim Roberts Never enough time!
[EMAIL PROTECTED]
------------------------------
From: "Brady" <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux,comp.os.linux.misc,comp.mail.sendmail
Subject: Re: Fetchmail posts two copies of each mail... ?
Date: Mon, 22 Mar 1999 04:26:15 GMT
lucky for you i just found out how to do this for my church:
this is the fetchmail rc we use to make it do multidrop
defaults
proto pop3
fetchall
poll yourmailserver localdomains mydomain.co.uk:
user (USER GOES HERE) with pass (PASS HERE) to esr * here
this works great for me.
Brady
Matthew <[EMAIL PROTECTED]> wrote in message
news:Pine.SOL.3.96.990320223933.13303B-100000@sun-cc203...
> Hello,
>
> I am using fetchmail to retrieve mail from an ISP to a mail gateway
> machine running RedHat Linux 5.1 and sendmail 8.8.7 (sendmail.cf 8.8.4). I
> don't think that sendmail is the problem though...
>
> The mail is posted into a multidrop box at the isp (any mail that goes to
> mydomain.co.uk). My machine is locally called gateway.mydomain.co.uk (and
> other machines on the network are called a.mydomain.co.uk, b.mydom..., c.
> etc.)
>
> I have to use POP3 to retrieve the mail, but with fetchmail it gets the
> mail from the ISP, and then depending on how I change the .fetchmailrc
> file either sends it all to [EMAIL PROTECTED], or to, say,
> [EMAIL PROTECTED] *and* [EMAIL PROTECTED] Sendmail then
> reports a problem because the MX dns entry points gateway.mydomain.co.uk
> to mydomain.co.uk and reports a DNS loop, bouncing one of the two e-mails
> back to the sender.
>
> I could use the first method of all e-mail going to root, and then use
> procmail to separate e-mail out to each user (which seems to allow more
> dynamic configuration), but then the users cannot use "Reply" to reply
> e-mail back to the sender, as the sender of the mail is now "root".
>
> Please help! I don't really mind which method I use to retrieve the mail,
> but it really needs to put the e-mails into local (mail gateway) mailboxes
> unaltered from downloading from the ISP.
>
> Thanks,
>
> Matthew
>
------------------------------
From: [EMAIL PROTECTED] (Preston F. Crow)
Subject: PLIP with 2.2.3?
Date: 22 Mar 1999 04:41:44 GMT
I'm running 2.2.3-ac3, and I've compiled PLIP support as a module.
My initialization script looks like:
modprobe lp parport=0
echo 7 > /proc/parport/1/irq
modprobe plip parport=1
(Yes, I have two parallel ports. The printer works fine.)
After doing that, my console fills up with transmit timeout errors
(regardless of whether I have my laptop connected to the cable). And
when I do set up my laptop, I can't get any packets through. Is PLIP
dead, or am I missing something?
This works fine under 2.0.36.
Is anyone else runing PLIP under 2.2?
--PC
--
The position and/or opinions in the above message are those of the Board of
Trustees of Dartmouth College. Copyright (c) 1998. All right reserved. The
above positions are also held by Newt Gingrich, many foreign world leaders, and
you who are reading them. Preston bears no responsibility for the content.
------------------------------
From: [EMAIL PROTECTED] (Preston F. Crow)
Subject: PLIP and bridging
Date: 22 Mar 1999 04:50:31 GMT
Background/motivation:
I've been given a set of IP addresses with a gateway that is not under
my control. I've subnetted my network, but am using bridging because
the gateway that I don't control won't route incoming packets through
my Linux system, since it thinks I'm just one big happy network. This
works fine with ethernet segments. (I'm running a pre-2.0.37 kernel,
and I've tried it with 2.2.3-ac3, as well.) However, one of my
subnets is a PLIP connection...
Problem:
I don't seem to be able to bridge between my PLIP network and an
ethernet network.
Question:
Should it be possible to bridge between PLIP and ethernet?
(Obviously, in theory, it should be possible, but does the code
fundamentally prohibit PLIP?)
--PC (hoping I don't have to masquarade)
--
/********************************************************/
/* "You only live once. Unless you take pictures. */
/* Then you live two or three times." --Darrin Rice */
/********************************************************/
------------------------------
Subject: Re: ip-masq / port-forwarding question ?
Reply-To: [EMAIL PROTECTED]
From: [EMAIL PROTECTED] (Stuart Lynne)
Date: Mon, 22 Mar 1999 04:10:36 GMT
In article <[EMAIL PROTECTED]>,
Erik Myllymaki <[EMAIL PROTECTED]> wrote:
>
> 24.25.26.27 80 192.168.0.3 80
> logfile /var/log/rinetd.log
>
>When invoked, "/usr/sbin/rinted" it quits with:
>
> rinetd: couldn't bind to address 24.25.26.27 port 80.
>
You have something else which is binding to that port. Either something
in /etc/inetd.conf or perhaps a standalone web server (httpd?).
--
Stuart Lynne <[EMAIL PROTECTED]> 604-461-7532 <http://edge.fireplug.net>
PGP Fingerprint: 28 E2 A0 15 99 62 9A 00 88 EC A3 EE 2D 1C 15 68
------------------------------
Date: Mon, 22 Mar 1999 16:00:15 +1100
From: Alfred REYNOLDS 3031616 <[EMAIL PROTECTED]>
Subject: Low level networking
I need to talk to 8 machines on a network at once with the MINIMUM of
latency possible. The communication between the "nodes" does not have
to be reliable, just VERY quick in repsonding ( bandwidth isn't a
problem).
I was going to try writing packets directly onto the network using
SOCK_RAW. The only problem is that I don't really know how to do this.
Does anyone know of a good site I can check out or some code that
implements it own low level protocol??
Thanks,
Alfred
[EMAIL PROTECTED]
------------------------------
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End of Linux-Networking Digest
******************************
