Subject: Linux-Admin Digest #1
From: Digestifier <[email-masked]>
To: [email-masked]
Date: Tue, 30 Aug 94 15:14:34 EDT

Linux-Admin Digest #1, Volume #2                 Tue, 30 Aug 94 15:14:34 EDT

Contents:
  Re: getting PLIP to work (NIIBE Yutaka)
  Re: CSlip; How can I set it up? (Terry Dawson)
  Re: [SLIP] Overruns? (Terry Dawson)
  Re: Need suggestions on Linux security (Martti Tikkanen)
  Re: MSDOS FS dates off by 5 days! (Slackware 2.0 bug?) (Leung Leung)
  Logging in over network from DOS? (Greg Philmon)
  Re: Erroneous results with ac (acct-1.1.18) (Juha Virtanen)
  Re: Need suggestions on Linux security (Thilo Wunderlich)
  Slip server problem FIX (Ped Xing)
  Re: Admin utils for linux ? (Harald Milz)
  Re: [Q] How to remote tape backup DOS -> Linux <- Sun (Dennis Director)
  Re: Logging in over network from DOS? (Sebastian W. Bunka)
  Adaptec 2742 bootdisk: kernel panic (Francis W. Starr)
  Term 1.19 Makeing it on SunOS 4.1.3 (Brian Curti Harvell)
  More about ftp... (Ian)
  Archive 2525 Tape drive? (Larry Pyeatt)
  Re: Backing up to QIC-80 (Thomas Vaughan)
  Re: Enabling A20 (Chuck Slivkoff)
  Re: Setting ftp server in Linux!!?? (michael butler)
  Re: SOLVED: How to FTP recursive directories? (Bob Willmot)

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

From: [email-masked] (NIIBE Yutaka)
Subject: Re: getting PLIP to work
Date: Tue, 30 Aug 1994 13:08:21 GMT

In article <[email-masked]>
        [email-masked] (Jerod Tufte) writes:

   can someone give a little advice on how to get better ping times with
   the newer 1.1.4? kernels?  I had 3-4ms with 1.0.9, and with the new
   PLIP it's 35-45ms.

Yes, it's true that 1.1.x (x >= 20) has longer latency.  Now I'm
testing alternative implementation which uses task queue instead of
timer.  I had 6 ms with test code, and slightly good transfer late.

   In addition to the slower pings, i get a few dropped
   packets, this is with a 486/66 connected to a (much much slower)
   386/33.  I understand the I must make the timeouts on the faster machine
   longer, right?

Yes.  You can change timeout constant by `plipconfig' utility.  It is
in the net-tools by Alan Cox.

If you want to test my alternative implementation, please mail me.
Thanks,
-- 
NIIBE Yutaka
Mitsubishi Research Institute, Inc.

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

From: [email-masked] (Terry Dawson)
Subject: Re: CSlip; How can I set it up?
Date: 30 Aug 1994 06:35:35 GMT

[email-masked] (Uri Blumenthal) writes:

>>Read about SLIP and CSLIP in the NET-2-HOWTO file at
>>   sunsite.unc.edu:/pub/Linux/docs/HOWTO

>Well, in 1,000,001-st time:  that HOWTO may or MAY NOT be up to date, 
>therefore you HAVE to read the README file in DIP source directory. 

Uri, for 1,000,002-nd time, if the HOWTO is not up-to-date then instead
of publicly whinging about it, why don't you help me out and contribute?

The NET-2-HOWTO on sunsite is the most up-to-date version. Why don't you check
it out ?

regards
Terry

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

From: [email-masked] (Terry Dawson)
Subject: Re: [SLIP] Overruns?
Date: 30 Aug 1994 06:46:48 GMT

[email-masked] (Bryce Ryan) writes:

>I have been running DIP 3.3.7a-uri, and when checking the link stats via
>the ifconfig sl0 command, have noticed a *huge* number of overruns--on
>the order of 75% of the total packets transmitted or received.  needless
>to say, my response time is incredibly slow.  I am using a 16550A UART,
>so that's not the problem.  Any hints?

From the NET-2-HOWTO:

    I see a lot of overrun errors on my slip port, why ?

    The older network tools incorrectly report number of packets
    compressed as the number of packets overrun. This has been
    corrected, and shouldn't occur of you are running the new
    version kernel and tools. If it still is it probably indicates
    that your machine isn't keeping up with the rate of data
    incoming. If you are not using 16550AFN UARTs then you should
    upgrade to them. 16450, or 8250 generate an interrupt for every
    character they receive and are therefore very reliant on the
    processor to be able to find time to stop what it is doing an
    collect the character from them to ensure none get lost. The
    16500AFN has a 16 character FIFO, and they only generate
    interrupts when the FIFO is nearly full, or when they have had
    character waiting, this means that less interrupts get generated
    for the same amount of data, and that less time is spent
    servicing your serial port. If you want to use multiple serial
    ports you should mandatorily upgrade to 16550AFN UARTs anyway.

regards
terry

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

From: [email-masked] (Martti Tikkanen)
Subject: Re: Need suggestions on Linux security
Date: 30 Aug 1994 13:03:54 GMT

In article <[email-masked]> [email-masked] (Gregory P. Smith) writes:

   In article <[email-masked]>,
   >
   >Talking about AMI BIOS, it's too easy to change boot password...
   >And to change boot sequence back to A, C.

   How can it be too easy to change the boot password?  Is there a security hole
   in the system (if so, I'd like to know!).  Taking the cover off and shorting
   the battery is the only method I know of.

There are several msdos based cmos backup and manipulating utilities available.
Backup your cmos. Thumber the backuped code. Restore it to cmos. And an error
has occured in cmos, which allows to setup your cmos again. And you can set
it up to boot from a as well as but your own passwd to it.

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

From: [email-masked] (Leung Leung)
Subject: Re: MSDOS FS dates off by 5 days! (Slackware 2.0 bug?)
Date: Tue, 30 Aug 1994 11:04:05 GMT

Alberto Vignani ([email-masked]) wrote:
: Hi all.
: Yesterday I noticed a very strange fact. I created some directories
: and files from Linux in a MSDOS filesystem; when I returned to DOS all
: the dates were offset by 5 days(in the future).
: Back to Linux and ls -l ... the dates were correct. But mdir behaves
: exactly as DOS: these files had a wrong date.
: I repeated the experiment the other way: i touched the files under DOS
: and then Linux reported a date 5 days in the past.
: After the usual administrative activity of such cases (changing libc
: links; rebooting with older kernels; lots of printk in the kernel;
: redoing calculations by hand....with no success) I rebooted with the
: Slackware rescue disk and voila'-all the dates were correct.
: 
: Then I went back, changed my timezone setting from EET (the right one
: now in Italy) to GMT, and all was right.
: 
: In fs/msdos/misc.c, line 232 (for 1.1.48):
: 
:       secs += sys_tz.tz_minuteswest*60;
: 
: was the source of the trouble: minuteswest holded a larger value
: (EET difference+5 days).
: If I'm right, possible sources of this behaviour are a bug in the
: clock program or a corrupted /usr/lib/zoneinfo/EET file under Slackware
: 2.0. Slackware 1.2 has no such problems.
: 
: Am I right? Anyone has noticed this bug(feature :-)?
: Bye
: Alberto

        Sometimes I got the date 1-1-1970 ...    

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

From: [email-masked] (Greg Philmon)
Subject: Logging in over network from DOS?
Date: Tue, 30 Aug 1994 13:08:55 GMT

I'm considering placing Linux box on our Novell 3.11 network.

I'd like to allow users to be able to login across the network from
their DOS or Windows based PCs.

Is this possible?
-- 
Greg Philmon | [email-masked] | CIS: 71161,3445 | MCI: 588-5358

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

From: [email-masked] (Juha Virtanen)
Crossposted-To: comp.os.linux.help
Subject: Re: Erroneous results with ac (acct-1.1.18)
Date: 30 Aug 1994 13:24:43 GMT
Reply-To: [email-masked]

>>>>> On Mon, 29 Aug 94 06:25:13 GMT, [email-masked] said:
:> I am running Linux 1.0 and 1.08 with the acct-1.1.18

Acct-1.1.18 is for Linux-1.1.18-> (1.1.36?) kernels (at least the
patch is).

:> However, I get erroneous results with 
:>        ac -d -p

:> Firstly, If I did not use the system for a day, root gets 
:> logged as 24 hour usage for that day. I even see that the 
:> usage for other users is not consistent and incorrect.

Ac uses /var/adm/wtmp for getting usage info. It has nothing to
do with per process logging done by kernel with accounting
patches.

Did you leave users logged in even your host were idle?

Juha
--
THE CHEMIST'S RULE: Never take more than three data points. There will always
           be some kind of graph paper on which they fall in a straight line.

THE CHEMIST'S RULE, FIRST COROLLARY: If you have only one kind of graph paper,
           never take more than two data points.

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

From: [email-masked] (Thilo Wunderlich)
Subject: Re: Need suggestions on Linux security
Date: 30 Aug 1994 13:25:07 GMT

[email-masked] (Gregory P. Smith) writes:

[it's too easy to change boot password...]

>How can it be too easy to change the boot password?  Is there a security hole

get amisetup and u can enter the setup ...
Any Simtel archive: msdos/sysutil/amise260.zip

Thilo
--
Thilo Wunderlich   [email-masked]
                                 [email-masked]

      GCS d--(---) p c+++ l++ u+++ e@ m- s/+ n--- h* f g+ w+ t r y++

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

From: [email-masked] (Ped Xing)
Subject: Slip server problem FIX
Date: 30 Aug 94 14:17:01 GMT

  I posted a request for help recently and got several good replies.
Here's a sumary so that all may share:

  Problem: Client to SLIP server interaction works fine but it does
not work with any other host.

  Solution:  IP packets are like not being routed to your client.
So what you need to do is use Proxy ARP.  You would do this by using
the following command (as root) on the SLIP server:

     arp -s client_IP hw_addr pub

where client_IP is the IP address of your slip client, hw_addr is
the hardware ethernet address of your ethernet card and pub which is
a flag to arp, meaning publish.  The hw_addr is displayed by a
recent version of ifconfig (type ifconfig with no parameters) but if
you don't have a recent version (like me), it's usually written on
your ethernet card.
   Also you can refer to a section in the NET-2 howto on Proxy ARP.

  Put the above command (when all is happy, joyful, and working)
into some suitable file like rc.local.

   Perhaps this will help other SLIP(/networking) neophytes cope :-)

Patrick

---
Patrick Plummer                 email:  [email-masked]
"UNIX is the answer... but only if you phrase the question very
carefully."
I use Linux, a free UNIX clone for i386 and up machines. Get it
from sunsite.unc.edu in the pub/Linux directory.

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

From: [email-masked] (Harald Milz)
Subject: Re: Admin utils for linux ?
Reply-To: [email-masked]
Date: Tue, 30 Aug 1994 15:20:55 GMT

In comp.os.linux.admin, William C. Strutton IV ([email-masked]) wrote:

> I'm looking for a program (or shell script) to do admin tasks via a 
> menu.  This could run from the prompt, or from X or whatever.  It should 
> include options to add/remove users, set permissions on files and so on..

Three people/teams are currently working on such a tool, independently
of each other: 

Pat Spinler ([email-masked])
Riccardo Facchetti ([email-masked])
Thomas Woerner ([email-masked])

according to the Projects Map. I wish those would join their efforts.

-- 
You can make it illegal, but you can't make it unpopular.
-- 
Harald Milz ([email-masked])      WWW: http://www.ix.de/editors/hm.html
iX Multiuser Multitasking Magazine      phone +49 (511) 53 52-377
Helstorfer Str. 7, D-30625 Hannover     fax   +49 (511) 53 52-378
Opinions stated herein are my own, not necessarily my employer's.

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

From: [email-masked] (Dennis Director)
Subject: Re: [Q] How to remote tape backup DOS -> Linux <- Sun
Date: 30 Aug 1994 14:49:04 GMT

>Yet another possibility in the near future may be to run WFWG on the
>PC sharing the drive with it's native networking and mounting
>it on Linux with the smbfs filesystem that someone is working on.
>
>Les Mikesell
>  [email-masked]
>

I would love to hear more about this.  I also would like to
backup up DOS machines on my Linux tape.  Mounting a WFWG file
system sounds like a good clean solutions.

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

From: [email-masked] (Sebastian W. Bunka)
Subject: Re: Logging in over network from DOS?
Date: 30 Aug 1994 14:00:20 GMT
Reply-To: [email-masked]

Greg Philmon ([email-masked]) wrote:
: I'm considering placing Linux box on our Novell 3.11 network.

: I'd like to allow users to be able to login across the network from
: their DOS or Windows based PCs.

: Is this possible?
Yes.
At our University we're running a Novell Netware network over Ethernet.
And we're connected to the internet. All PC's and Apples do have an
internet number. If you're not connected to the internet you can
choose the IP numbers yourself, otherwise you have to ask for a domain 
number at an international organization (don't ask me which).
Either you then setup a nameserver for your net, or you use raw IP
numbers. From every host you can connect to your linux box either
by telnet or ftp. You can mount directories by using shareware nfs
(look at simtel) printing on your box or on other boxes (lpr from
ncsa; lp-demon for Apples - I'm using this for printing postscript
files on our laserwriter IINT) and so on.
Check NCSA Telnet for DOS and Apple; Gopher clients HTTPdemons
and whatever you can imagine.
Hope this helped,
cheers, Sebastian

--

email:                   [ [email-masked] ]
voice:                   FAX:
+43-1-71155260           +43-1-7149110
Location: earth, europe, austria, vienna  Inst. of Bacteriology  Vet.Univ.

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

From: [email-masked] (Francis W. Starr)
Crossposted-To: comp.os.linux.help
Subject: Adaptec 2742 bootdisk: kernel panic
Date: 30 Aug 1994 16:03:28 GMT

I have been trying to install Linux on my system with an Adaptec
2742 SCSI controller.  I have tried the bootdisks available from
sunsite.unc.edu:/pub/linux/kernel/images/boot284x.tar.gz and one
from ftp.pipex.net:/incoming/linux/aha2740.gz.  I get the 
following error using either of these disks shortly after the 
boot prompt:

Kernel panic=aha274x_isr: brkadrint, error=0xff, seqaddr=0x100

In swapper task - not syncing

Following this, the floppy keep spinning and the machine does
nothing.  Can anyone provide a suggestion??  Thanks.

                        -Francis

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

From: [email-masked] (Brian Curti Harvell)
Subject: Term 1.19 Makeing it on SunOS 4.1.3
Date: 30 Aug 1994 10:49:11 -0400

Hi has anyone made term 1.19 on SunOS 4.1.3 I am now and I am not 
getting it to work. It was a charm on the linux box. If so could you
let me know what you did or uuencode it and send it to me.
Thanks
Brian
-

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

From: [email-masked] (Ian)
Subject: More about ftp...
Date: 30 Aug 1994 16:55:18 GMT

Ok, I've managed to get wu-ftpd 2.4 running on my Linux 1.0.9
system, thanks very much to John Boyd for his patch and installation
notes. :) However, one thing is bothering me.. When I do ftp localhost,
it prompts me for a username. I do 'anonymous' and it asks me
for a password. It accepts whatever I type and THEN asks me
to type my complete email address AFTER I have already entered one.
Is there any way to get it to prompt for the email address BEFORE
I enter it, as is the case on most other systems? 

Thanks very much,
        Ian

===============================================================================
Ian  - [email-masked]              "Don't flee from yourself.. If you have
        Cheeken!                         a quality, be proud of it.. Let it
                                         define you, whatever it is... "

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

From: [email-masked] (Larry Pyeatt)
Subject: Archive 2525 Tape drive?
Date: 30 Aug 1994 16:12:57 GMT

Does anyone know if the Archive 2525 will work under Linux?
Can anyone give me an opinion of whether or not I should buy one
and how much I should pay?
-- 
Larry D. Pyeatt                   All standard disclaimers apply.
[email-masked]           Void where prohibited.

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

From: [email-masked] (Thomas Vaughan)
Subject: Re: Backing up to QIC-80
Date: 30 Aug 1994 08:24:13 -0600

[email-masked] ( Jonathan Williams ) writes:

        Yes you can use a dos formatted tape. As long as it is
        in QIC80 format.

        Tom

>I've just recently installed Linux at home, and almost as recently installed a
>tape drive.  I want to back up my entire file system, as my hard drive isn't
>interleaving properly, but I can't get tar to write to the QIC-80 tape.  Every
>time I try I get the message:

>tar: Can't write to /dev/ftape: I/O/ Error

>or something close to that.  Its a new tape, and I haven't formatted it yet,
>mostly because I can't (in linux).  If I format it in dos, will I be able to
>use it in Linux?  If not, how do I go about setting it up so I can use it?

>Jon Williams 

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

From: [email-masked] (Chuck Slivkoff)
Subject: Re: Enabling A20
Date: 30 Aug 1994 14:12:05 GMT

On Tue, 30 Aug 1994 00:27:53 GMT, David Fraser ([email-masked]) wrote:
) Seems I have a weird PC, and the standard mechanism of using the keyboard 
) controller to enable A20 doesn't work.  Any clues on what I can do to get 
) Linux up and running?  From browsing MS-DOSes "himem.sys" there may well be a 
) few ways to do this.  Are they documented anywhere?

You might want to check in your CMOS setup program.  There may be an option 
there for enabling/disabling the A20 line.  If not, there should be an
option to 'Configure using factory defaults', which should enable the
A20 line (you may have to re-configure your other CMOS options after this,
though--floppies, hard disk, etc.).  

g'luck :)
-- 
Chuck Slivkoff          [email-masked]
Computer Science        Youngstown State University

Youngstown, OH:  All the drugs, crime & violence of New York at half the cost!

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

Crossposted-To: aus.computers.linux,comp.os.linux.help
From: [email-masked] (michael butler)
Subject: Re: Setting ftp server in Linux!!??
Date: Tue, 30 Aug 1994 17:12:04 GMT
Reply-To: [email-masked]

Larry Doolittle ([email-masked]) writes:

: Either that, or the path for ls is hard-coded in the ftp binary,
: and that path is not where your ls is installed.  

It is in the "standard" distributions as well as wuarchive's flavour BUT
this is not a problem. ftpd, after it obtains the caller's identity, does a
chroot to its own ftp directory. All that needs to be done is to create a
'bin' subdirectory of that and COPY (not link) ls into it. Do similarly with
any required shared libs.

: A quick soft-link cured the problem.

This is a potential security hole .. don't link anything,

        michael

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

From: [email-masked] (Bob Willmot)
Subject: Re: SOLVED: How to FTP recursive directories?
Date: 30 Aug 1994 13:15:47 -0400

[email-masked] (Rafal Maszkowski) writes:

>Jeff Arnholt ([email-masked]) wrote:
>> Several people kindly pointed out that some FTP servers
>> will automatically tar the contents of a directory
>> if you add the extension .tar.  Therefore, to get
>> the Slackware directory and everything below it,

>Another way is to create the remote directories and
>mg */* */*/* */*/*/* or similar. It is practical for
>one level, e.g. slakware directory in Slackware.

The best way that I've found for a site that doesn't support 
automatic tar'ing of directories is through the use of a 
script rftp written for expect 

Expect is a program that performs programmed dialogue with 
other interactive programs.

Expect can be FTP'd from: ftp.cme.nist.gov  
in the file /pub/expect/expect.tar.Z

the rftp script (included in expect.tar) allows you to
recursively get and put directory structures!

Bob Willmot
[email-masked]

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

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End of Linux-Admin Digest
******************************