Linux-Networking Digest #788, Volume #11 Mon, 5 Jul 99 13:13:41 EDT
Contents:
Re: ppp always connects but sometimes drops (R. Denoire)
Re: zmodem with cu (Frank da Cruz)
Re: Stopping squid proxying real audio (Steven Brooks)
Q:Remote XSession through ipfwadm linux box... ("Chris")
Re: how to connect 2 Linux PC's directly? ("Dimitri Willemse")
Increasing DNS cache flush interval ("YouDontKnowWho")
Re: Room temperature question for home network. (mike murray)
Re: Direct Cable Network (Lawrence Bacon)
Re: Non-typical firewall IP interfaces numbers (Rafal Podeszwa)
Re: I'm having DNS brainfailure ("Carl Filpo")
Re: OK - I GIVE UP! - can't give users ftp access!!!!???? (Bob)
Re: NIS, simple problem (azfar samin)
Re: Redhat 6.0 & netscape (azfar samin)
Re: Linux Web and DNS server possible with one IP? (Bob)
I'm having DNS brainfailure ([EMAIL PROTECTED])
Re: I'm having DNS brainfailure ([EMAIL PROTECTED])
setting up ISP (Reka)
Multicast on Linux ([EMAIL PROTECTED])
FTP server configuration - Need Help! ("Ken Burgess")
Heeeeeelp with Samba and Win 95 Client !!!!!!! (BorgholdR)
Re: linux as router to self - colo setup (John Bell)
----------------------------------------------------------------------------
From: [EMAIL PROTECTED] (R. Denoire)
Crossposted-To: comp.protocols.ppp
Subject: Re: ppp always connects but sometimes drops
Date: Sun, 04 Jul 1999 18:19:37 GMT
Reply-To: [EMAIL PROTECTED]
Basel Shishani <[EMAIL PROTECTED]> wrote:
>I'm having this weird problem when connecting to my ISP
>(OptusNet-Australia) from my linux box (i586 - kernel 2.0.36 -
>RH5.2). After establishing a *successful* ppp connection, the line will
>drop after some few seconds to few minutes of activity. However, this
>behavior is not consistent, in some instances it just connects and stays
>connected for hours without any problems, in other instances I keep
>getting the line drops repeatedly (ie. connecting successfully then
>dropping on successive tests)
I have been having the same problem for years now. It is well known
that certain combinations of modem and ISP equipment is responsible
for this failure. I have spent a lot of time to find that out. I am
using a Motorola 28.8 Plug&Play and my ISP uses Ascend equipment. The
ISP told me it will not change it for me...
There are at least two leading manufacturers of the kind of chips
needed for modems (I forgot the brand names); one of them is the
culprit (it is used in the Motorola modem).
Solution: Buy another modem (I will do soon).
================
------------------------------
From: [EMAIL PROTECTED] (Frank da Cruz)
Subject: Re: zmodem with cu
Date: 4 Jul 1999 18:25:14 GMT
In article <[EMAIL PROTECTED]>,
Gene Heskett <[EMAIL PROTECTED]> wrote:
: Unrot13 this;
: Reply to: <[EMAIL PROTECTED]>
: ...
: > I am using Expect scripts and cu to access (propriatary) systems
: > remotely. Some systems offer zmodem transfers that I can acess using
: > minicom. I would like to use expect and cu to complete these zmodem
: > transfers but I'm unsure how to use zmodem with cu. Minicom's
: > interface is to combersome for me to use with expect.
:
Assuming you already have a version of sz/rz whose standard i/o can
be redirected (which you do if you can use it to transfer files over a
connection you have made with minicom), you can use C-Kermit to make the
connection and rz/sz as an external Zmodem protocol. You don't need
expect, you can write the script in the C-Kermit script language. More
about C-Kermit at:
http://www.columbia.edu/kermit/ckermit.html
and look here for script examples:
http://www.columbia.edu/kermit/scriptlib.html
Of course, you can also use Kermit protocol too if the remote system
supports it. See:
http://www.columbia.edu/kermit/kermit.html
for more information.
- Frank
------------------------------
From: Steven Brooks <[EMAIL PROTECTED]>
Subject: Re: Stopping squid proxying real audio
Date: Mon, 05 Jul 1999 09:25:42 -0500
Chris Severn wrote:
> Aside from forcing him to use squid for all web stuff (by blocking port 80 from
>masquerading from his machine using ipchains) is there any way to stop real audio in
>this instance ?
> Chris Severn.
Port 80 is HTTP, not RealAudio. RealAudio uses port 80 just to
download a small .ram file which tells it where the *real* server is.
You should check IANA for the port number for RealAudio, and
just block that port for that user using IPChains. I believe the protocol
is called pnm.
Steven
------------------------------
From: "Chris" <[EMAIL PROTECTED]>
Crossposted-To:
apana.lists.os.linux.net,apana.lists.os.linux.redhat,comp.os.linux.misc,comp.os.linux.questions,linux.net.masquerade
Subject: Q:Remote XSession through ipfwadm linux box...
Date: Mon, 05 Jul 1999 14:27:55 GMT
Anyone have any ideas....
a) Linux(Real IP)--->router-->Net
b) X Server(Fake IP)---->Linux(Real IP)--->Router-->Net
I want to run n x session from b to a ?? any ideas.....
Chris
------------------------------
From: "Dimitri Willemse" <[EMAIL PROTECTED]>
Subject: Re: how to connect 2 Linux PC's directly?
Date: Mon, 5 Jul 1999 14:40:30 +0200
Looks like you have given the answer yourself. I'd put a second network card
in PC A. Then even PC B would be connected to the Internet through PC A's
connection (default gateway). And both PC B and PC A's second network card
(the one to PC B) would have internal IP addresses.
CU
Dimitri
------------------------------
From: "YouDontKnowWho" <[EMAIL PROTECTED]>
Subject: Increasing DNS cache flush interval
Date: Mon, 05 Jul 1999 15:01:18 GMT
My system's log shows that every hour, on the hour, DNS flushes it
cache.
How can I increase the interval to be longer? We have a very small
system and DNS doesn't really get used that much (right now, just one
PC!).
Thanks!
--
And now we return to our regularly scheduled,
uncommonly entertaining thread...
------------------------------
From: mike murray <[EMAIL PROTECTED]>
Subject: Re: Room temperature question for home network.
Date: Mon, 05 Jul 1999 08:37:40 -0500
George wrote:
> Hi everybody,
>
> I have a Windows peer to peer home network, and will soon have a Linux
> Internet gateway server. I have a problem with my home network. The
> problem is that I don't have air conditioning in my house, and it's summer
> time right now. In the day time, it gets really warm in my computer room,
> and sometimes the PCs act abnormally. I have to shut them down every once
> in a while, and restart them to get them working again. (I presume because
> of the heat). By the way, I have to keep the PCs turned on - because one of
> the PCs is our answering machine.
>
> So, my question is: What would be a good room temperature for my computer
> room. And, what alternatives are there to keeping the room cool, besides an
> air conditioner. Air conditioning can get expensive, and even if I get one,
> it would be a window unit. And I don't know if I can run a window A/C unit
> all day (besides, that too can get expensive). I've got an extra fan in
> each PCs case, but I still worry about the warm room temperature. What
> else can I do to keep my room cool? Do ceilings fans work? Maybe a block
> of ice and an oscillating fan? :)
>
> Please help, my PCs need your help, they're dying from too much heat.
>
> George
>
> Email: [EMAIL PROTECTED]
>
> If replying by email, please remove the "REMOVE-THIS--ANTI-SPAM." from the
> email address.
Take the covers off the pc's & run fan(s) directed at the machines. That
worked for me one hot summer
when a pentium cooling fan burned up.
------------------------------
From: Lawrence Bacon <[EMAIL PROTECTED]>
Subject: Re: Direct Cable Network
Date: Mon, 05 Jul 1999 15:07:19 +0000
Jason Martinez wrote:
> I bought a parallel cable for direct cable connections in windows 9x.
>
> Can I use this cable for networking two 486's with SuSE 6.1 installed?
>
> If so could someone please explain in as laments terms as possible how.
>
> Thank you.
> Jason Martinez
> [EMAIL PROTECTED]
Hi Jason,
If the cable you bought is the " Laplink " standard " the answer is yes: I
use the plip option in Linux to copy files from one machine to another
this way. See Http://www.redhat.com/support/docs/html for a mini plip
howto. If you still need help post to the group and I'll post my files
that I use for RedHat6.0
------------------------------
From: Rafal Podeszwa <[EMAIL PROTECTED]>
Subject: Re: Non-typical firewall IP interfaces numbers
Date: Mon, 05 Jul 1999 15:58:46 +0200
Robin Putzar wrote:
>
>
> As a first try, I have changed the IP number of eth1 in box A to 192.168.35.44
> (with netmask 0.0.0.0, broadcast 255.255.255.255). Now I can ping both interfaces
> of box A from box B. But it�s still not possible to ping the gateway. (The
> packages are still lost on box A.)
>
> I do not have direct access to the gateway. Is there a way to tell box A it should
> forward all packages for box B to box B?
>
I had similar problems when I experimented with different IP numbers in
the situation from my original posting. I think the problem might be
with routing on gateway. The gateway expects that box B can be accessed
directly whereas it must be accesed via box A. Gateway sends ARP
questions about box B IP and has no answers since the box is in a
different network. If you can change routing table on the gateway, it
might work but I don't know how to solve the problem without necessity
of changing routing on gateway. As I suggested, maybe box A can respond
to ARP questions about box B IP with its hardware address but I still
don't know how to do it.
Rafal
------------------------------
Reply-To: "Carl Filpo" <[EMAIL PROTECTED]>
From: "Carl Filpo" <[EMAIL PROTECTED]>
Subject: Re: I'm having DNS brainfailure
Date: Mon, 5 Jul 1999 22:53:29 +0800
>
> My problems is
> i can't type the name of mydomain.com into the browser and get
> anywhere.
>
A hosts file on your win95 boxes (\windows\hosts) will do the trick, but if
you
really want to run dns you'll have to create some zone files.
/etc/named.conf
and some files with your local hosts ( a hosts file and a reverse lookup
file which usually
go in /var/named )
Then run "ndc restart" to restart the name server
People on the internet will be able to find your web server through a static
dns "A" record
in the isp's zone file for your domain - something you don't have to set
up - only tell the isp.
> i can ping the box from my win9.x clients using the ip only.
>
You'll have to point the win9x dns setting to your linux box.
> i realize that the ip address i'm using on my private lan won't work
> on the internet at large. My registered ip is currently pointing to
> a coming soon page on the internet.
I would think that your isp has your static ip number pointing to their web
server which brings up your coming soon page. When you get your
Internet connection they (isp) will change mydomain.com to point to your
static ip which will be assigned to your ppp interface every time you
connect.
>
> Since i can go out on the internet and type mydomain.com and get
> to the coming soon page do i even need to use dns on my private lan?
>
If you can make use of an ISP's DNS then do that - its heaps easier esp.
if you only are going to have one IP number assigned.
A local dns is handy for relaying mail on a local mail server so that
sendmail can do a reverse lookup on the local hosts and permit
mail relay - not really much else.
> i wanted to get everything working on my private lan before i even
> attempt to plug in the real stuff.
If you're hosting the web pages on the one machine then the rest of the
world will be able to seeit through the isp's dns. As for your local LAN
a hosts file on all the win9x machines will let them see the machine by name
or use a local dns if you can be bothered setting it up.
Hope some of this helps.
------------------------------
From: [EMAIL PROTECTED] (Bob)
Subject: Re: OK - I GIVE UP! - can't give users ftp access!!!!????
Date: Mon, 05 Jul 1999 15:22:51 GMT
ok - shadow passwords - that appears to be what i'm missing....
2 Q's -
1) how are shadow passwords enabled/disabled?
(man page reveals c structure, not user docs)
2) how does beroftd (or ANY ftpd) get told to use/not use
shadow passwords?
(again docs don't say)
tia - Bob
________________________________________________
Definition of Windows 95:
A 32 bit upgrade to 16 bit extensions for an 8 bit operating system
designed to run on a 4 bit processor by a 2 bit company that
doesn't like 1 bit of competition.
[EMAIL PROTECTED] (M. Buchenrieder) wrote:
>[Newsgroups: trimmed, F'Up-To: set]
>
>[EMAIL PROTECTED] (Bob) writes:
>
>[...]
>
>>SO - anon can login, no problem.
>
>Good.
>
>>real users get bad passwd.
>
>[...]
>
>Make sure that the ftpd daemon is using shadow passwords as well,
>otherwise the authentication process will (logically) not work.
>
>Michael
------------------------------
From: azfar samin <[EMAIL PROTECTED]>
Subject: Re: NIS, simple problem
Date: Mon, 5 Jul 1999 15:31:44 GMT
log in as root on the client machine and run
>> linuxconf &
and goto user accounts.
azfar
Daniel wrote:
> Here at White Horse (english school in Taiwan), we just had some college
> students setup LINUX and an NIS network for us. But they have gone home
> for the summer, and I need to add users to so that the English students
> can login from anywhere on the network. I'm sure this is extremely
> simple. I would have thought it was covered in the HOWTO, or an FAQ. But
> I have not been able to find anything. What do I have to do? Surely it
> is jsut a file I have to edit like passwd or something. Where is it? Or
> is there a utility to do this?
>
> We are running Redhat 6.0.
>
> Please E-mail responses to [EMAIL PROTECTED]
------------------------------
From: azfar samin <[EMAIL PROTECTED]>
Subject: Re: Redhat 6.0 & netscape
Date: Mon, 5 Jul 1999 15:23:06 GMT
Netscape crashes on Java pages fix:
run this line in /usr/sbin as root
>> ./chkfontpath --add /usr/X11R6/lib/X11/fonts/75dpi
and it should be OK.
Azfar.
> Tovo Andriamandroso <[EMAIL PROTECTED]> writes:
>
> > Hi all,
> > I have a problem to browse a page with a java applet, netscape
> > destroy itsself when starting java appeared in the status bar. I've
> > tried netscape 4.51, 4.6 & 4.61 and I have no change. Can anyone know
> > where does the problem come from ?
> > Tovo.
> >
------------------------------
From: Bob <[EMAIL PROTECTED]>
Subject: Re: Linux Web and DNS server possible with one IP?
Date: Mon, 5 Jul 1999 22:02:56 +0800
Possible and very probable!
On 1 very modest linux box I run, (ibm6x86 166mx 64Meg ram)
DNS,
Web Server,
Mail Server,
Chat server,
Firewall,
Terminal Server for 64 Modems!
Probably a lot of other minor services as well.......
The load on this box rarely goes over 0.20
>
> Yes, it is possible. The feasibility depends on the load.
>
> Hartmann Schaffer
>
>
>
Bob PHILLIPS
Director/System Administrator
[EMAIL PROTECTED] | ISP to the nor'west of Western Australia
| http://www.norcom.net.au
Yes, I am on the interthingy | If it aint broke, fix it, then it will be
==========================================================================
dotnet dotau Pty Ltd PO Box 2762 SOUTH HEDLAND WA 6722 AUSTRALIA
==========================================================================
------------------------------
From: [EMAIL PROTECTED]
Subject: I'm having DNS brainfailure
Date: Mon, 05 Jul 1999 14:11:00 GMT
I'm running apache on a local network (redhat 5.2 note
i didn't install the whole thing i have been installing it piece by
piece so i could learn what is going on.)
i'm not going to handle dial up or email on my domain. I'm simply
going to host some pages.
My problems is
i can't type the name of mydomain.com into the browser and get
anywhere.
i have read the dns howto plus some other dns stuff from two other
sources.
i can get to my apache server on the lan by typing the ip address
of my linux box on the url line of the browser everything works fine.
i can ping my linux box with either the domainname.com or the ip
from the linux box itself
i can ping the box from my win9.x clients using the ip only.
i realize that the ip address i'm using on my private lan won't work
on the internet at large. My registered ip is currently pointing to
a coming soon page on the internet.
Since i can go out on the internet and type mydomain.com and get
to the coming soon page do i even need to use dns on my private lan?
i wanted to get everything working on my private lan before i even
attempt to plug in the real stuff.
i realize i am being dense here and i am probably missing something
really easy.
thanks.
bind 8.1.2
apache 1.3.3
samba 1.9.18
------------------------------
From: [EMAIL PROTECTED]
Subject: Re: I'm having DNS brainfailure
Date: Mon, 05 Jul 1999 15:34:16 GMT
thanks
i have set up the various files
etc/named.conf
etc/resovle.conf
etc/hosts.conf
etc/hosts probably a couple more i can't think of off hand. ;-)
when i do nslookup i get the following error
***can't find server name for address 192.168.0.100 server failed
***default servers are not available.
i don't understand how come ping works with the name or the number
and nslookup doesn't
however if i can just have my isp set up the dns thing on their end
i will use the window\hosts file here i only have 3 machines to deal
with. then i won't have to bother with dns for now since i dont' care
about mail or anything else at this point.
On Mon, 5 Jul 1999 22:53:29 +0800, "Carl Filpo" <[EMAIL PROTECTED]>
wrote:
>>
>> My problems is
>> i can't type the name of mydomain.com into the browser and get
>> anywhere.
>>
>
>A hosts file on your win95 boxes (\windows\hosts) will do the trick, but if
>you
>really want to run dns you'll have to create some zone files.
>/etc/named.conf
>and some files with your local hosts ( a hosts file and a reverse lookup
>file which usually
>go in /var/named )
>
>Then run "ndc restart" to restart the name server
>
>People on the internet will be able to find your web server through a static
>dns "A" record
>in the isp's zone file for your domain - something you don't have to set
>up - only tell the isp.
>
>> i can ping the box from my win9.x clients using the ip only.
>>
>You'll have to point the win9x dns setting to your linux box.
>
>> i realize that the ip address i'm using on my private lan won't work
>> on the internet at large. My registered ip is currently pointing to
>> a coming soon page on the internet.
>
>I would think that your isp has your static ip number pointing to their web
>server which brings up your coming soon page. When you get your
>Internet connection they (isp) will change mydomain.com to point to your
>static ip which will be assigned to your ppp interface every time you
>connect.
>
>>
>> Since i can go out on the internet and type mydomain.com and get
>> to the coming soon page do i even need to use dns on my private lan?
>>
>
>If you can make use of an ISP's DNS then do that - its heaps easier esp.
>if you only are going to have one IP number assigned.
>
>A local dns is handy for relaying mail on a local mail server so that
>sendmail can do a reverse lookup on the local hosts and permit
>mail relay - not really much else.
>
>> i wanted to get everything working on my private lan before i even
>> attempt to plug in the real stuff.
>
>If you're hosting the web pages on the one machine then the rest of the
>world will be able to seeit through the isp's dns. As for your local LAN
>a hosts file on all the win9x machines will let them see the machine by name
>or use a local dns if you can be bothered setting it up.
>
>Hope some of this helps.
>
>
------------------------------
From: [EMAIL PROTECTED] (Reka)
Subject: setting up ISP
Date: 5 Jul 1999 15:11:38 GMT
Hi,
I have been trying to set up an experimental ISP and I have figured out
how to set up the LINUX ppp server to recieve dial up connection from win95
clients.
What is the next step? Do I need to register a number of legal IP addresses
so that I can assign them to the clients? or can I get away by using
IP masquerading? or there is a better way to it?
Thanks.
Reka
------------------------------
From: [EMAIL PROTECTED]
Subject: Multicast on Linux
Date: Mon, 05 Jul 1999 15:37:07 GMT
Hi all,
Have anybody used Multicast on Linux (Currently I have a RedHat 5.2) ?
What software packages do I need to install or buy , other than
reconfiguring the Linux kernel for Multicast capacity ? Does it mean
that I am suppose to configure Linux box as a Video server ?
Thanks
P
Sent via Deja.com http://www.deja.com/
Share what you know. Learn what you don't.
------------------------------
From: "Ken Burgess" <[EMAIL PROTECTED]>
Subject: FTP server configuration - Need Help!
Date: Mon, 5 Jul 1999 12:13:35 -0400
Hi All,
I have a RedHat v5.2 installation running on a 486-66 box with the WU FTP
daemon installed.
I have configured the system so that a client of mine can have FTP R/W
access to his own directory (/home/ftp/client) using a user ID that has been
created for him.
I have two questions -
1) How do I restrict this user from telnet access to the system (I only want
the user to be able to FTP to the system to upload/download files).
2) How do I limit the user's ability to CD to directorys other than his own
(ideally the user would be able to FTP to the site and read/write/delete
files in his "own" directory but could not CD out).
Thanks in advance for any assistance that you may be able to offer.
Regards,
Ken Burgess
------------------------------
From: [EMAIL PROTECTED] (BorgholdR)
Subject: Heeeeeelp with Samba and Win 95 Client !!!!!!!
Date: 05 Jul 1999 16:32:24 GMT
Hallo,
ich habe hier ein gro�es Problem mit dem Datentransfer: PC --> Linux : in
Sekunden, Linux --> PC in Minuten ! Ich habe Linux 6.1 (Suse) und auf dem
anderen Rechner Win95 C. Per FTP klappt es Prima in beiden Richtungen.
I have a great Problem with Datatransfer between Linux and Win 95. In the
direction Win 95 -> Linux = fast. The other direction is very slow (2MB = two
Minutes) FTP is running fast in both directions, any help ? Linux is installed
with new kernel and lastest version of Samba
Many thanks for your help
�ber eine kurze Mail w�rde ich mich sehr freuen
Tschau Reiner
------------------------------
From: John Bell <[EMAIL PROTECTED]>
Subject: Re: linux as router to self - colo setup
Date: Mon, 05 Jul 1999 11:19:08 -0500
Reply-To: [EMAIL PROTECTED]
Rich Roth wrote:
>
> John Bell wrote:
>
> > Rich Roth wrote:
> > >
> > > (BTW, if you want a challege there is an NT box next to our linux box
> > > that is doing this fine (different but similer set of IP addresses
> > > but since NT is so visual we can't make sense out of the routing table.)
> > >
> >
> > ???
> >
> > Open up a CMD.EXE shell on NT. Run the 'route' command.
> > Read what it says about the routing table. Mimic :-).
>
> Sorry, not helpful - and a poor Linux response <g>
Go figure - how so?
>
> Actually that was the first thing we did - there is something else in how the
> interfaces are configured.
Then it wouldn't hurt to mention that in the original post.
Care to describe the problem again?
Opening up cmd.exe on a known working system, running
'route print', and reading the output to compare against
the _non-working_ Linux system is a good place to start.
It's not a big leap from 'route add net' etc. after that.
Let's look at some other things:
- Is the Linux machine configured to act as a router
(you did check those things off in the kernel config)?
- Are both interfaces "up"?
- Are they configured with the proper addresses for the
subnets that they reside on (address, masking, etc.)?
- While we're at it, did you check off "optimize as
a router" in the kernel config?
- You don't have a dynamic routing daemon like gated
etc. gumming up the works, do you?
Maybe this will be a "good Linux response" for you. A better
response for someone who bites the hand that tries to feed
him is "get bent", but I'm in a good mood today and won't
stoop to that level.
Have a nice day,
--
John Bell - [EMAIL PROTECTED] - http://www.vignette.com
Sr. System Administrator - Vignette Corporation
Parturiunt montes, nascetur ridiculus mus. - Horace
------------------------------
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End of Linux-Networking Digest
******************************
