Linux-Networking Digest #524, Volume #10 Wed, 17 Mar 99 03:13:32 EST
Contents:
Re: VNC (Glenn Butcher)
Re: Redhat 5.1 upgrade to kernel 2.2.1 (Jussi Torhonen)
Re: 2.2.3 over RH 5.2: DHCPCD problem with Cable Modem ("Jeff Volckaert")
Re: NFS vs Samba (Jason McKnight)
Re: Trying to set up Cable Modem @home under linux...pings IP but nothing else????
("DScherck")
Re: Delaying at the sendmail initialization ("Tom Holmes")
Re: IP Masqurading? Please Help ("Leopold Toetsch")
Security/Password Questions ("Stressed")
Re: IP Forwarding via Command Prompt ("��d�W")
Looking for a sniffer (Erwin Hogeweg)
Re: Connected but can't surf (Daniel Linux user)
SQUID problem. Help needed. (PhilT)
IP Forwarding Problem, HELP !!! ("��d�W")
----------------------------------------------------------------------------
From: Glenn Butcher <[EMAIL PROTECTED]>
Crossposted-To: comp.unix.solaris,comp.sys.sun.admin
Subject: Re: VNC
Date: Tue, 16 Mar 1999 21:55:41 -0700
Has to do with differences in the architectures of X and Windows NT.
The X VNC server is an actual X server that, instead of writing to the
screen, writes VNC "drawing primitives" to a TCP port. The NT server
has to pick at Windows internals to sense updates to paint regions of
_the_ display - there is only one NT display per box. With X, you can
have multiple servers running, such as the X display server and the X
VNC server.
What you want to do would take an X server that managed both the
computer's display and the VNC port. Don't think such an animal exists.
Glenn Butcher
Shu Chen Liu wrote:
>
> Hi Everyone,
>
> I'm not sure where to ask this question so I posted it to a few groups.
> I just installed VNC on a couple of Unix machines and one Windows NT
> station. They can all act as both server and client. I noticed that
> when I use the Unix station as the client and the NT station as the
> server, I see the exact desktop that is active in Windows. In other
> words, if I move the mouse around and start applications, I would see
> the same thing happen on the screen of the NT station.
>
> However, this is not true in reverse. With the any of the unix stations
> (Linux or Solaris), I get a totally new desktop. The active desktop at
> the unix station is left alone. I would like to be able to access the
> active desktop of the unix station as well. The reason is that it seems
> like it might have some value as a client support tool. You know, a
> user on the phone says "I'm doing exactly what you tell me to do but it
> still doesn't work." So you pull up his desktop and tell him "I said
> the left button not the right button!!" Thanks for your help. : )
------------------------------
From: Jussi Torhonen <[EMAIL PROTECTED]>
Subject: Re: Redhat 5.1 upgrade to kernel 2.2.1
Date: Tue, 16 Mar 1999 20:34:04 +0200
On Tue, 16 Mar 1999, Ovidiu Dressler wrote:
> I tried to upgrade the kernel 2.0.35 to 2.2.1 on a Redhat 5.1 system.
Have you studied RedHat document abou kernel-2.2 upgrade:
http://www.redhat.com/support/docs/rhl/kernel-2.2/kernel2.2-upgrade.html
"4.1 Important for non 5.2 users:
These RPMs and packages are ONLY meant to be used with Red Hat 5.2. There
are no plans for 2.2.x updates for any other release at this time."
OK, sure it's possible to get all necessary system updates for RedHat 5.1
as well to get kernel-2.2 running, but you're on your own. One required
document is /usr/src/linux/Documentation/Changes from kernel-2.2 source
archive.
I'm running RedHat 5.2 box in home with all those kernel-2.2/i386 updates
and a handmade 2.2.3 kernel and the system runs fine.
Jussi
--
===================================================================
Jussi Torhonen # E-mail: [EMAIL PROTECTED]
Tietosavo Oyj # Corporate website: http://www.tietosavo.fi
P.O.Box 1582 # Personal homepage: http://www.iki.fi/jt
FIN-70461 KUOPIO # Tel: +358-17-193231 GSM +358-50-5946209
FINLAND # Fax: +358-17-193355 73's de OH7DC
------------------------------
From: "Jeff Volckaert" <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.setup
Subject: Re: 2.2.3 over RH 5.2: DHCPCD problem with Cable Modem
Date: Tue, 16 Mar 1999 13:57:11 -0500
It works under 5.2 and timesout under 5.2 w/updates and 2.2.3.
Jeff Volckaert
Tom Morris wrote in message <[EMAIL PROTECTED]>...
>I've been running RH 5.2 with @Home for a month now with no problems.
Yesterday
>my DHCP lease expired and wouldn't renew.After several hours of messing
around
>and switching back and forth from Linux to Win95 things still wouldn't work
>right. I spent 2.5 hours on hold with TCI I got through to a tech (don't
they
>have simply great customer service <g>.) He had me change my Win95 system
from
>a DHCP to a fixed IP address and all came up fine. He had no explanation -
but
>said that it really should use DHCP because even though the IP was assigned
to
>me it could change!
>
>To make a long story short, I changed the RH 5.2 system to my fixed IP
address
>and everything is running fine again. They are supposed to get back to me
with
>an explanation as to why the DHCP connection is all of a sudden failing,
but I
>sure won't be holding my breath.
>
>The other possibility, if it's never worked, is that you don't have the
hostname
>in the dhcpcd command. It's not there by default in RH so you have to
modify the
>'ifup' script.
>
>Hope one of these works for you.
>
>regards,
>
>Tom
>
>
>Jeff Volckaert wrote:
>
>> Hello Everybody,
>>
>> I have several Redhat 5.2 systems with the 2.2 updates and kernel 2.2.3.
>> DHCPCD works fine on all of them, but my system connected to my cable
modem.
>> If just fails after timing out. I've tried backleveling DHCPCD to the
>> version on RedHat 5.0 and 5.1 and still no address.
>>
>> Any help?
>>
>> TIA,
>> Jeff Volckaert
>
------------------------------
From: Jason McKnight <[EMAIL PROTECTED]>
Subject: Re: NFS vs Samba
Date: Tue, 16 Mar 1999 13:50:47 -0500
Try manually mapping a drive to your Samba server using the UNC naming and the
IP address.
\\192.168.1.1\
Xiao Furen wrote:
> I'd like to access my files in my linux across internet using Windows 98.
> I've
> tried Samba and it's great! However, it seems that Samba can only be used in
> my
> LAN environment instead of across the internet. Is there any solution for
> this
> or I have to use the NFS (or another protocol) instead?
------------------------------
From: "DScherck" <[EMAIL PROTECTED]>
Subject: Re: Trying to set up Cable Modem @home under linux...pings IP but nothing
else????
Date: Tue, 16 Mar 1999 10:44:05 -0800
>Jeremy M. Gibson wrote in message <36ec8f3b.3514478@news>...
>>So I read this RH5.2 and Cablemodem setup file out their on the net,
>>and it said that this was a very easy procedure. But I now have a eth0
>>device that will ping the assigned IP but nothing else. I am lost.
>>For debugging info this is what I have done:
>>
>>System:
>>
>>Dual boot Pentium II 333
>>
>>2 Ethernet cards one for Windows (AT2400/BT PCI which I don't think is
>>supported in linux) and one for linux (3com 3c509b ISA).
>>
>>Linux is 2.0.36 kernel and has all the networking packages.
>>
>>Gen Info
>>
>>LiLo detects the 3c509 and I have put it on irq 11 base 0x210
>>
>>I have set up these things in netcfg:
>>
>>name:ci419747-a
>>nameserver: 24.2.12.15
>>
>>interfaces: eth0 IP(24.2.13.50) Default Gateway (24.2.13.1)
>>
I have had no problems at all with the @home cable service. I am using
Slackware 3.5 and a PCI 3com 3c905b tx. I simply got the networks settings
from the @home web page and ran netconfig. Filled in the settings and I am
up and running. Works great. You can get the info you need if you are dual
booting windowz by typing "winipcfg" at the Run prompt under the start menu.
Goto the /etc/rc.d dir and edit the rc.inet1 file. check the sttings there.
Save the file, reboot and you should be connected.
Hope that helps....
-Devins
[EMAIL PROTECTED]
PS. when you get it up and running. Using pine and whatnot simply set the
mailserver name as "mail" and the news server as "news" it works for me.
Good luck!
------------------------------
From: "Tom Holmes" <[EMAIL PROTECTED]>
Crossposted-To:
comp.os.linux.help,comp.os.linux.misc,comp.os.linux.questions,comp.os.linux.setup
Subject: Re: Delaying at the sendmail initialization
Date: Tue, 16 Mar 1999 22:21:01 -0500
I am having this same problem. Sendmail is being delayed when I boot up and
it is also causing havoc for my web server.
When I originally set up my networking, I called the hostname
'dilbert.holmes.net' and the domain name as 'holmes.net'. and everything
worked fine.
When I changed the hostname to 'dilbert' and the hostname to nothing, this
is where it stopped working right. I did the change because when I tried to
look for 'dilbert.holmes.net' on my workstation (which is connected to the
net via cable modem) I got confused results since a domain already exists
for 'holmes.net'. This wasn't a problem for my static IP address of
192.168.0.100 on my internal network.
So, currently the /etc/sysconfig/network file: HOSTNAME=dilbert
is correct.
The /etc/hosts file has:
127.0.0.1 localhost localhost.localdomain
192.168.0.100 dilbert
192.168.0.12 ratbert
192.168.0.1 phb
The /etc/lmhosts file looks like this also.
The /etc/HOSTNAME file has the one line in it: dilbert
The /etc/networks has one line in it: HOSTNAME=dilbert
Do I need a domain name, or will a simple hostname do?
Anything to fix this problem from anyone would be greatly appreciated!
Tom
Rajat & Papia Goon wrote in message <7cbjeo$[EMAIL PROTECTED]>...
>Hi,
> I installed rh5.2 on my m/c at the time of booting it is taking
>some time at the
>sendmail initialization phase. If anybody can help me in this respect
>how can I
>remove that delay phase. Please mail me mailto:[EMAIL PROTECTED].
>
>Thanks in advance,
>-Rajat
>
>
------------------------------
From: "Leopold Toetsch" <[EMAIL PROTECTED]>
Subject: Re: IP Masqurading? Please Help
Date: Tue, 16 Mar 1999 18:43:37 +0100
Vincent Fox wrote in message <7cm08m$5av$[EMAIL PROTECTED]>...
>In <[EMAIL PROTECTED]> "Leopold Toetsch" <[EMAIL PROTECTED]> writes:
>
>*snip*
>
>I think you are all dismissing his point too lightly.
>I have been a UNIX sysadmin since 1990. I have used many
>of the major variants of commercial UNIX from my early BSD
>days with SunOS ... ==cut==
It was about newbies questions and how newbies could find the answers.
For more sophisticated questions you might be right.
>Doing a web search
>always seemed to result in so many hits that I was drowned in
>trying to search for the needle in the haystack of postings that
>were about something close to what I was doing, but not exactly
I did search the web too e.g. for timeserver & clients for NT and found very
good resources and howtos, so it may differ.
leo
------------------------------
From: "Stressed" <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.misc,comp.os.linux.questions,comp.os.linux.redhat
Subject: Security/Password Questions
Date: Wed, 17 Mar 1999 06:07:54 GMT
Hi All,
I'm hanging a Linux machine off of the Net. So, naturally I'm reading on
security/firewall and testing security measures, etc. My question is about
cracking login passwords.
I've tried a few "password crackers" here.
I took one called "JTR", and used it on my /etc/passwd file in "plain old
crack" mode.
It almost immediately reports and verifies all accounts that don't have
somewhat complex passwords. Actually - ones with lousy passwords.
But, my questions is this:
I intentionally put a rather simple password on the root account to see how
fast these programs might find it. However, even though the root password is
more simple than the other user passwords - the cracker program has failed
(after 14 hours) to find the root password. Does the system do something
"different" to the root password as opposed to other passwords?
I'd also like to know about any "crackers" or the like and/or means of
obtaining root (especially root) and user passwords from my own system.
NOTE: I am NOT using shadowing to my knowledge, (unless some sort is
implemented by default). This is a straightforward RHL 5.2 install with no
bells, buzzers or whistles. Just studying security before I put my thingies
out there! And for those who care, here is my reason for focusing on passwd
files:
My friend and I are doing this jointly, (going to serve the www). I logged
into his Linux machine and DL'd his /etc/passwd file for analysis to prove a
breach. I then cracked his own "regular user" login info from his
/etc/passwd file and telneted to his box. I then downloaded all his *passwd*
files. Unfortunately, during a massive mget, my /etc/passwd file got
overwritten. Hence, upon reboot, I could not log into my own system without
repair :-)
Any and all help is appreciated.
JM
P.S. We're documenting everything for public record.
[EMAIL PROTECTED]
------------------------------
From: "��d�W" <[EMAIL PROTECTED]>
Subject: Re: IP Forwarding via Command Prompt
Date: Wed, 17 Mar 1999 15:08:23 +0800
I got the same IP Forwarding problem, too !!!
Here is the detail:
+-----------------------------------------------------------------------+
| Linux Box
|
| with 2 NICs
|
+------------------------------+-------+-------------------------------+
| eth0 | | eth1
|
| 10.131.12.50 | | 192.168.0.1 |
+---------------+--------------+ +----------------+--------------+
| |
| |
+---------------+--------------+ +----------------+--------------+
| Internet | | CWin98 Client
|
+------------------------------+ | --------------------------- |
| with gateway
|
| = 192.168.0.1
|
+---------------+---------------+
I want to let my CWin98 client connect to internet through Linux Box.
So, I set the gateway of the CWin98 client as eth1(192.168.0.1).
"IPv4 forward" is enabled in the Linux Box.
When I use browser to view Homepage, it appear as "Test Page for Red Hat
Linux's Apache Installation".
The HTML content is as following:
##It Worked!
##If you can see this, it means that the installation of the Apache software
on this Red Hat Linux system was successful. You may now add content to this
directory and replace this page.
##--------------------------------------------------------------------------
======
##If you are seeing this instead of the content you expected, please contact
the administrator of the site involved. If you send mail about this to the
authors of the Apache software or Red Hat Software, who almost certainly
have nothing to do with this site, your message will be ignored.
##--------------------------------------------------------------------------
======
##The Apache documentation has been included with this distribution.
##For documentation and information on Red Hat Linux, please visit the web
site of Red Hat Software. The manual for Red Hat Linux is available here.
##You are free to use the image below on an Apache-powered web server.
Thanks for using Apache!
##You are free to use the image below on a Red Hat Linux-powered web server.
Thanks for using Red Hat Linux!
Besides, I canNOT ping IP of those machine in the internet.
Would anyone has got idea of what else I need to do ?
Please offer your help !!!
Thank you
------------------------------
From: Erwin Hogeweg <[EMAIL PROTECTED]>
Subject: Looking for a sniffer
Date: Wed, 17 Mar 1999 08:29:09 +0100
Reply-To: [EMAIL PROTECTED]
Hi,
Does somebody know if there is a network sniffer for Linux or how I can
view the package data with tcpdump (3.4a5)?
--
CU Erwin
================================================================
Erwin Hogeweg Software engineer
SLC Technologies R&D Access Control
P.O.Box 10350 Kelvinstraat 16
6000 GJ Weert; NL 6003 DH Weert; NL
tel. +31 495 579532 fax. +31 495 579500
================================================================
------------------------------
From: Daniel Linux user <[EMAIL PROTECTED]>
Subject: Re: Connected but can't surf
Date: Tue, 16 Mar 1999 23:48:46 -0800
The name server is a different IP address than your ISP. You will need
to get the DNS numbers from your ISP. If I have misread your message, I
apologize, but it sounds like you are listing your ISP's IP address as
your DNS address. You should have a minimum of two IP numbers for name
servers. Once you have the DNS numbers, add them to /etc/resolv.conf or
use Kppp to set them up. Kppp puts a lock on the resolv.conf file and
uses its own settings anyway.
You may wish to ping using IP numbers to see if that works. It should
and then you should fix the name resolution problem by doing the above.
Daniel
Rob wrote:
>
> ""I connect ok but am not able to connect to any
> sites."""
>
> I Have SuSe 6.0 I have used Yast to install ppp and suse ppp, I have set up
> the name serverserver to my match my ISP's IP address. I am using kppp to
> dial
> my internet provider. It seems I connect ok but am not able to connect to
> any
> sites. When I ping servers I get "Network is unreachable" Here is what
> netscape says:
>
> "Warning: the following hosts are unknown:
> home.netscape.com
> home6.netscape.com
> internic.net
>
> This means that some or all the hosts will be unreachable.
>
> Perhaps there is aproblem with your name server?
> If your site must use a non-root name server, you will need to set the
> $SOCKS_NS environment variable to point at the appropriate name server."
>
> I have check for any setting of $SOCKS_NS and did not find anything.
>
> Since I am using kppp I have also set the name server to my ISP
>
> I am using a 56k modem to dial my ISP wirefire.com
>
> Any help would certainly be appreciated
>
> P.S.
> I am new to LINUX
------------------------------
From: [EMAIL PROTECTED] (PhilT)
Subject: SQUID problem. Help needed.
Date: Wed, 17 Mar 1999 08:04:32 GMT
Reply-To: [EMAIL PROTECTED]
I tried using squid as a proxy. Twice I have encountered the following
error message after a while of use.
FATAL:You've have run out of swap file number
On two occasions I have deleted the entire cached files directory and
recreated it. It then works fine. Does this have something to do with
file handles?
I could not find the answer in the FAQ.
I'm pretty new to Linux. If it is concerning file handles, where do I
start looking to change those configurations?
Any help is appreciated. TIA.
=====
PhilT
[EMAIL PROTECTED]
------------------------------
From: "��d�W" <[EMAIL PROTECTED]>
Subject: IP Forwarding Problem, HELP !!!
Date: Wed, 17 Mar 1999 15:08:58 +0800
I got the same IP Forwarding problem, too !!!
Here is the detail:
+-----------------------------------------------------------------------+
| Linux Box
|
| with 2 NICs
|
+------------------------------+-------+-------------------------------+
| eth0 | | eth1
|
| 10.131.12.50 | | 192.168.0.1 |
+---------------+--------------+ +----------------+--------------+
| |
| |
+---------------+--------------+ +----------------+--------------+
| Internet | | CWin98 Client
|
+------------------------------+ | --------------------------- |
| with gateway
|
| = 192.168.0.1
|
+---------------+---------------+
I want to let my CWin98 client connect to internet through Linux Box.
So, I set the gateway of the CWin98 client as eth1(192.168.0.1).
"IPv4 forward" is enabled in the Linux Box.
When I use browser to view Homepage, it appear as "Test Page for Red Hat
Linux's Apache Installation".
The HTML content is as following:
##It Worked!
##If you can see this, it means that the installation of the Apache software
on this Red Hat Linux system was successful. You may now add content to this
directory and replace this page.
##--------------------------------------------------------------------------
======
##If you are seeing this instead of the content you expected, please contact
the administrator of the site involved. If you send mail about this to the
authors of the Apache software or Red Hat Software, who almost certainly
have nothing to do with this site, your message will be ignored.
##--------------------------------------------------------------------------
======
##The Apache documentation has been included with this distribution.
##For documentation and information on Red Hat Linux, please visit the web
site of Red Hat Software. The manual for Red Hat Linux is available here.
##You are free to use the image below on an Apache-powered web server.
Thanks for using Apache!
##You are free to use the image below on a Red Hat Linux-powered web server.
Thanks for using Red Hat Linux!
Besides, I canNOT ping IP of those machine in the internet.
Would anyone has got idea of what else I need to do ?
Please offer your help !!!
Thank you
------------------------------
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to be added to or deleted from it should be directed, is:
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You can send mail to the entire list (and comp.os.linux.networking) via:
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Linux may be obtained via one of these FTP sites:
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End of Linux-Networking Digest
******************************
