Linux-Networking Digest #880, Volume #9          Thu, 14 Jan 99 20:13:48 EST

Contents:
  Re: Network: Can't Ping (Matt Kressel)
  Remote backups as root? (Sjoerd Krol)
  Re: Remote backups as root? (Matt Kressel)
  Re: Connecting my l.an (Matt Kressel)
  Re: IP Tunneling ("Alexander Beck [CDC] Mister Pec")
  �W�n�ȿ��}��! ("������")
  Re: PPP/SLIP/Null Modem Connection Help (Kalevi Hautaniemi)
  Re: Pentium with CD -> 486 without ([EMAIL PROTECTED])
  Network Connection Monitor (Haaino Beljaars)
  statnet drops nic into promiscious mode (Johnny Icon)
  Re: Postgresql over IP ("Jack J. Woehr")
  Re: easy easy easy one (Josh Rusko)
  pppd malfunction after several days' normal work ("Wei Chen")
  VT100 terms and CR ([EMAIL PROTECTED])
  Re: VPN / PPTP (Vipul Gore)
  howto setup a pop for dailup (Markus Kienast)
  Re: tcp/ip from Win98 to Linux: Strange behaviour (Vipul Gore)
  Re: routing problems + aliasing (Philip Wall / Wild Card)

----------------------------------------------------------------------------

From: Matt Kressel <[EMAIL PROTECTED]>
Subject: Re: Network: Can't Ping
Date: Thu, 14 Jan 1999 21:07:31 GMT

Daniel Goh wrote:
> 
> Hi,
> 
> I have just set up a network between a Linux Box and a Win 95 System. Both
> systems work perfectly in Win 95 so there is no problem with the hardware
> but in Linux for one of the PCs, I am unable to ping the other Win 95 system
> and the Win 95 system is unable to ping the Linux Box aswell, but eth0
> interface is working (able to ping myself). I was wondering if there is any
> other setting needed or special settings to ping different operating
> systems.
> 


You need to set up your routing tables and make sure that both machines
are on the same subnet.

-Matt


-- 
Matthew O. Kressel | INTERNET: [EMAIL PROTECTED]
+---------  Northrop Grumman Corporation, Bethpage, NY ---------+
+---------  TEL: (516) 346-9101 FAX: (516) 346-9740 ------------+

------------------------------

From: Sjoerd Krol <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.setup
Subject: Remote backups as root?
Date: 14 Jan 1999 16:02:13 GMT

Haai there,

I've 2 Linux machines and one off them has a tapedrive attached to it
(HP Surestore 5000). Currently I'm using the dump and restore commands
on the one with the tape attached. I want to do the same with the
remote machine, but I can't do it from the root account. root can't do
any remote commands. For a normal user it's no problem (.rhosts file),
but when backing up the whole system you need to be root no?
Anyway does anyone know how to backup the remote system?
Or an other way to do it?

2nd : what are the best parameters to put in for the dump command
      for a 4mm 2G 90m DDS tape?

Thanks in advance!

Greetings,
       Sjoerd
+-------------------------------------------------------+
| E-mail         : [EMAIL PROTECTED]                  |
|                  [EMAIL PROTECTED]                         |
| World Wide Web : http://web.inter.NL.net/users/S.Krol |
+-------------------------------------------------------+
        "What are you doing?"
        "Examining the world's major religions.  I'm looking for something
that's light on morals, has lots of holidays, and with a short initiation
period."

------------------------------

Crossposted-To: comp.os.linux.setup
From: Matt Kressel <[EMAIL PROTECTED]>
Subject: Re: Remote backups as root?
Date: Thu, 14 Jan 1999 20:53:55 GMT

Sjoerd Krol wrote:
> 
> Haai there,
> 
> I've 2 Linux machines and one off them has a tapedrive attached to it
> (HP Surestore 5000). Currently I'm using the dump and restore commands
> on the one with the tape attached. I want to do the same with the
> remote machine, but I can't do it from the root account. root can't do
> any remote commands. For a normal user it's no problem (.rhosts file),
> but when backing up the whole system you need to be root no?
> Anyway does anyone know how to backup the remote system?
> Or an other way to do it?
>

Why not use "cpio" with a cron job?  Also, why not telnet in?
 
> 2nd : what are the best parameters to put in for the dump command
>       for a 4mm 2G 90m DDS tape?
> 
>

Don't know, sorry...

-Matt

-- 
Matthew O. Kressel | INTERNET: [EMAIL PROTECTED]
+---------  Northrop Grumman Corporation, Bethpage, NY ---------+
+---------  TEL: (516) 346-9101 FAX: (516) 346-9740 ------------+

------------------------------

From: Matt Kressel <[EMAIL PROTECTED]>
Subject: Re: Connecting my l.an
Date: Thu, 14 Jan 1999 21:04:00 GMT

G. G. Flatman wrote:
> 
> Hello,
>           I have 4 machines on my lan they are all networked thru my
> hub Linux box hs the ppp connection to the Internet along with being
> connected to my hub on the Lan i am presently reading the NET-3 how to
> page but i am confuse at one part do i need to put the following in a
> file and where is that file located or do i just type it in on the
> command line.
> 
> root# route add -net 192.168.1.0 netmask 255.255.255.0 eth0
> root# route add -net 192.168.2.0 netmask 255.255.255.0 eth1
> root# route add -net 192.168.3.0 netmask 255.255.255.0 eth2
> root# route add default ppp0
> 

Traditionally, these types of commands are put in your initialization
files which often reside in /etc/rc.???? or thereabouts.  On my
Slackware Linux system, it is in /etc/rc.d/rc.inet1.  Use grep to find
which file does the initialization and add it there.

-Matt

-- 
Matthew O. Kressel | INTERNET: [EMAIL PROTECTED]
+---------  Northrop Grumman Corporation, Bethpage, NY ---------+
+---------  TEL: (516) 346-9101 FAX: (516) 346-9740 ------------+

------------------------------

From: "Alexander Beck [CDC] Mister Pec" <[EMAIL PROTECTED]>
Subject: Re: IP Tunneling
Date: Thu, 14 Jan 1999 23:34:36 +0100

please mail me too if u got an answer.....
Cu

Noone schrieb:

> Greetings!
>
> Here's an excellent challenge....I have two LINUX boxes set up as firewalls
> to my network.  We are switching over to NT with Exchange as our email
> server.
>
> What I want to do is set it up so that my NT box is behind the firewall but
> taht POP3 clients can access their email.  My solution is to set up IP
> Tunneling between my NT box and my Linux box.
>
> Has anyone ever done this?  Does anyone know where I can get more
> information?  I have consulted the /usr/src/linux/drivers/net/README.tunnel
> file.  It is kinda cryptic though.
>
> Thanks for any help!
>
> Patty Calcaterra
> [EMAIL PROTECTED]




------------------------------

From: "������" <[EMAIL PROTECTED]>
Crossposted-To: 
comp.os.ms-windows.networking.misc,comp.os.ms-windows.networking.ras,comp.os.ms-windows.networking.tcp-ip,comp.os.ms-windows.networking.win95
Subject: �W�n�ȿ��}��!
Date: Fri, 8 Jan 1999 10:19:26 +0800



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------------------------------

From: [EMAIL PROTECTED] (Kalevi Hautaniemi)
Subject: Re: PPP/SLIP/Null Modem Connection Help
Date: 14 Jan 1999 07:03:31 GMT
Reply-To: [EMAIL PROTECTED]

James Dekorse ([EMAIL PROTECTED]) wrote:


:   Hello.

:   Can anyone offer suggestions on how to establish a TCP/IP link using a
: nullmodem between two linux boxes?

:   I have consulted the NET3-HOWTO as well as all the other documentation
: that i could find.  I've tried both SLIP (slattach) and PPP (pppd), do not
: receive any error messages - it just does not work.

:   For slip, this is what I am doing (using Alan Cox 5/2/94 version of
: slattach)

: % slattach /dev/cua1 &
: %
: % ifconfig sl0 -pointopoint 129.bb.bb.bb up

: where 129.bb.bb.bb is the address of the computer at tyhe other end of the
: cable.


:   I run this on both sides (different hardware).  Null modem cable (using
: only 3 pins).

I think that's it. In Linux, those handshake lines can't be left out.
Particularly DCD -line is important. If the computer can't find it, it
won't do a thing with serial port. 

If you can't wire them thru, then you must, at least, jumper them the way
the port thinks they are wired. I've done it with 25 pin connector
soldering a short piece of wire from 4 to 5 and another piece of wire from
20 to pins 6 and 8. But remember, neither SLIP nor PPP does work as good
as it should with cable like this.

Kalevi

--
Kalevi J Hautaniemi,      Kovajankatu 5,     33530 Tampere,  FINLAND.
****  http://oh3tr.ele.tut.fi/~oh3fg/ ****  On air:  OH3FG, KO4BC  ****
tel:+358-3-364-7446    mobile:+358-50-590-2243 or +358-50-033-5447

------------------------------

From: [EMAIL PROTECTED]
Subject: Re: Pentium with CD -> 486 without
Date: Thu, 14 Jan 1999 23:21:59 GMT

I am an extreme newbie to Linux, but couldn't you temporarily put the
cd rom from the Pentium box in the 486(unless its scsi and the 486 has no scsi
adapter)? Then copy the cd to hardisk?
Ffej
>
> Hi - I have Linux installed on a hardrive on a pentium box which
> originated on a CD ( RedHat Distribution).  I also have a 486
> with no CD which I would like to make a Linux box as well.  In other
> words, I would like to access the pentium box's CDrom from the 486.
>
> Currently the 486 has muLinux installed on it, downloaded from the net
> and installed using 3 floppies.
>
> All I have to connect the two is a null modem cable.  According to the
> RedHat docs I should be able to install from the CD via a network but
> do I need a network card for that?  Is the /dev/cua1 port sufficient?
>
> If so, how do I configure the durn thing?  All the Howto's seem to
> just be short of an answer that works!
>
> I have read all the docs from the LDP and the RedHat distribution but
> my head is spinning around!  Could someone please please explain in
> English for me how I connect the two (i.e. what protocol, what scripts
> etc).  I'm sure someone has had to do this before.
>
> I thank you in anticipation,
>
> Cheers :)
>
>

============= Posted via Deja News, The Discussion Network ============
http://www.dejanews.com/       Search, Read, Discuss, or Start Your Own    

------------------------------

From: Haaino Beljaars <[EMAIL PROTECTED]>
Subject: Network Connection Monitor
Date: Thu, 14 Jan 1999 09:11:55 +0100

Hi,

I am searching for a grafical program that displays a list of all TCP/IP
connections to my and from my machine. I have a RH 5.2 system. If there is
no such program, can anybody tell em how to monitor TCP/IP connections?

Greetings from Haaino Beljaars

E-Mail:         [EMAIL PROTECTED]              
Home Page:      HTTP://www.phys.uu.nl/~beljaars/ 


------------------------------

From: [EMAIL PROTECTED] (Johnny Icon)
Subject: statnet drops nic into promiscious mode
Reply-To: [EMAIL PROTECTED] 
Date: Wed, 13 Jan 1999 21:34:12 GMT

Hi

I noticed an app called statnet in my Caldera distrubution
so I had to have a quick look.

because I am trying to check network collisions I left it running for
a few hours. Then I realised that eth0 had dropped into promiscious
mode.

On my Linux box which is a firewall I started wondering if this was 
in fact a security risk, on futher invesigation I found it possible
for a boomerang Nic to drop into this mode quite easily when using 
Linux as a diagnostic tool

comments welcome


------------------------------

Date: Thu, 14 Jan 1999 01:39:32 -0700
From: "Jack J. Woehr" <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
Subject: Re: Postgresql over IP

Thanx, L J ... editing pg_hba.conf did the trick. Yer a wiz!

L J Bayuk wrote:

> I can't help specifically with JDBC, but does your pgsql/data/pg_hba.conf
> file allow the host you are coming from access to the database? Is the
> authentication method there (e.g. "password") compatible with the JDBC
> client? Can you connect from the server system itself with
> "psql -h localhost -u template1" which forces it to go over IP?

-- 
Jack J. Woehr                 # The Drug War is Race War
PO Box 51, Golden, CO 80402   # The Drug War is Class War.
[EMAIL PROTECTED] [EMAIL PROTECTED]   # The Drug War is Civil War.
http://www.well.com/~jax/rcfb # Arrest the War on Drugs.

------------------------------

From: Josh Rusko <[EMAIL PROTECTED]>
Subject: Re: easy easy easy one
Date: Thu, 14 Jan 1999 17:56:06 -0500

ya mean where it shows up in netword neighborhood? That wouldn't be your
domain name, it would be your workgroup name in samba.conf (smb.conf? I forget
the name and I'm in windoze now).

[EMAIL PROTECTED] wrote:

> I am just wondering how to chamge my domain name in redhat 5.1...i thought
> that i had changed it correctly, but it still shows up under the wrong
> domain name on my windows computers. THanks, Jason


------------------------------

From: "Wei Chen" <[EMAIL PROTECTED]>
Subject: pppd malfunction after several days' normal work
Date: Thu, 14 Jan 1999 19:05:28 -0500

I have a PPP connection between my Linux and my ISP. It works fine for days.
But this evening, this connection suddently does not work any more. I looked
at the log file, the problem is that after the link between pppd and
/etc/modem is established, the modem hung up within 2seconds. I also used
minicom to test this connection, but minicom can get my dynamically-alocated
address back correctly. Who has ideas about this problem? Thanks!



------------------------------

From: [EMAIL PROTECTED]
Subject: VT100 terms and CR
Date: 14 Jan 1999 08:31:17 -0000

Since upgrading my Debian 1.3.1 to 2.0, the CR key doesn't work correctly in
such things as JOE etc, but only when telneting in remotley from VT100 term
emulators?

However, it is fine if I first export the TERM to VT220 ? But that breaks 
other things. It is also fine if I start a 'screen' session.

Everything was fine under 1.3.1 ?

I guess this is some sort of TERMINFO/VT100 thing. But I am lost as to where
to look to mend the problem.

Why would the CR key not work under 2.0 !

Ideas anyone !

-- 
Nidge Jones

------------------------------

From: Vipul Gore <[EMAIL PROTECTED]>
Subject: Re: VPN / PPTP
Date: 14 Jan 1999 16:27:16 PST


Obviously, PPTP will not work with linux. Unless someone found out how to
do that.

I tried using SSH (you responded to my earlier post). It worked great
with my dialup connection (via netcom network) but when I switched to
cable modem (@home.com), it started giving me problems since they blocked
netbios and netbeui ports.

SSH is available at www.datafellows.com. You can use it to do IP
Tunneling.

Vipul

Yan Seiner wrote:

> has anyone been successful in setting up a VPN between a linux server
> and a Win95 machine?
>
> The win95 box has a IP address that changes every time I log on.  The
> linux box has a fixed IP.
>
> Any pointers to FAQs, HOWTOs, etc. would be welcome.
>
> I have read the sunsite HOWTO and it does nto apply to win32 :-(
>
> Yan

--
Vipul Gore
Info Objects, Inc.
Ph: 408 255 9700 x12
Email: [EMAIL PROTECTED]
http: www.info-objects.com



------------------------------

Date: Thu, 14 Jan 1999 09:36:36 +0100
From: Markus Kienast <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
Subject: howto setup a pop for dailup

i=B4ve got a network with dailup acces to the internet. the users on the
workstations should have full mail access via my own pop and fetchmail
should go out and get their mail, if the check mails on this pop. is
this the normal way? is there some more common way? how to solve this
problem? how to configure fetchmail, pop, ... ?

tnx,
    hugo


------------------------------

From: Vipul Gore <[EMAIL PROTECTED]>
Subject: Re: tcp/ip from Win98 to Linux: Strange behaviour
Date: 14 Jan 1999 16:30:30 PST


Well, the simplest way to solve this problem is not using hosts file. Instead go to 
Control
panel->Internet and choose, go to internet via LAN instead of modem. That will solve 
your
problem instantly.

Vipul

Mark Cooperstein wrote:

> In article <77k0rt$4s0$[EMAIL PROTECTED]>, "Alex Bruschke" <[EMAIL PROTECTED]> 
>wrote:
> >Hi,
> >
> >I have a tiny (2 pc) tcp/ip network. One of them is a Win98 pc (adress
> >192.168.0.1) and the other a Linux pc (adress 192.168.0.2). When I use ping
> >from my Win98 pc to the Linuc pc there is no problem.
> >But when I use ftp or telnet (ftp 192.168.0.2) Win98 first tries to dial in
> >on my internet provider and when I cancel this only then it works fine and I
> >can connect to the Linux pc.
> >
> >Two questions:
> >
> >How can I prevent Win98 from first dialling to the internet when I try to
> >use the local tcp/ip connection ?
> >Why doesn't this happen when I use ping ?
> >
> >
> >
> Do you have a hosts file in your Windows machines? You should have the
> following files in c:\windows directory
> c:\windows\hosts - containing something like this:
>
> # ip address    fqn             alias
> 127.0.0.1        localhost
> 192.168.0.1     frodo.com   frodo
> 192.168.0.2     bilbo.com   bilbo
>  (fqn is fully quallified network name)
>
> also you should have:
> c:\windows\lmhosts - containing something like:
> 127.0.0.1       localhost
> 192.168.0.1     frodo       #PRE
> 192.168.0.2     bilbo       #PRE
>
> This should prevent Windows DUN from trying to start a dial up networking
> connection when you ftp or telnet over to your Linux (192.168.0.2) box.  I
> believe that what's happening is that DUN doesn't realize that frodo and bilbo
> (in my example) are local machines and is trying to do DNS on them.  If they
> exist in the hosts file, then it shouldnt need to resolve anything, thus DNS
> wont fire up a connection (I think).  As to your second connection, ping is a
> special kind of protocol (not sure exactly), but I think it uses something
> called ICMP, which is a IP protocol that doesn't have a port associated with
> it (unlike TCP).  Because of this, it usually doesnt behave exactly the same
> way with things like DNS and firewalls as do other kinds or IP protocols.
> Again, I'm a bit vague on this.
>
> Mark
>
> **  Remove ".nospam" when replying or email will bounce back to you...

--
Vipul Gore
Info Objects, Inc.
Ph: 408 255 9700 x12
Email: [EMAIL PROTECTED]
http: www.info-objects.com



------------------------------

From: Philip Wall / Wild Card <[EMAIL PROTECTED]>
Subject: Re: routing problems + aliasing
Date: Wed, 13 Jan 1999 20:51:41 -0600
Reply-To: [EMAIL PROTECTED]

Brian McCauley wrote:
> 
> Philip Wall / Wild Card <[EMAIL PROTECTED]> writes:
> 
> > I would suggest turning on bridging in the kernel.
> 
> That is very bad advice.  When a situation can readily be handled
> by ordinary routing then resorting to bridging is not a good idea.
> 
> I think, perhaps, Philip may have mean to say IP-forwarding.
> 

  Well actually I did mean bridging. For me that would be the easiest to
maintain and manage, no access list.
  And the first firewall I setup I used the Bridging+Firewall HOWTO
which is pretty easy to follow.
  But you can run IP Forwarding just as easy. And it will have the same
affect in the end.

-- 
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Name: Philip Wall
Handle: Wild Card
e-mail: [EMAIL PROTECTED]
Thought of the day:
The goal of science is to build better mousetraps.  The goal of nature
is to build better mice.


------------------------------


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