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From: "Digest" <ianatos2site dot com>
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Date: Sat, 04 Aug 2001 01:00:00 +1000 (EDT)
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Subject: [os2genau_digest] No. 138
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Date:- 04 August 2001

1================================================



From: "Ian Manners" <ianatos2site dot com>
Date: Fri, 03 Aug 2001 00:36:03 +1000 (EST)
Subject: Re: [os2genau] Hacker questions

Hi Graham

>its all a bit "scary" !!  2 or 3 times a day some one tries to hack the system!!!

Well, looking for a hole more than hacking ;-)

>With regard to deleting the programs on the Gateway I shall do it but leave it to an 
>expert to come on site as I presume that it is a bit more involved than deleting the 
>object (icon) in the Internet utilities folder!!!!  Shall also get my 'expert' to check the 
>firewall files that you mention . thanks

Yes, I physically delete the files in several directories, I will send you
a list privately, your expert will know which ones need to be kept.

>the UPS is a SOLA UPS  1050  520RM  unit..

Cant help you with this one, I have OS/2 software for Tripplite and APC.
You could try the software at http://www.os2site dot com/sw/util/power/ or
is it asking to much that SOLA might have some OS/2 software ?

I know that the CBA had some SOLA UPS's, the servers then were
OS/2 so SOLA might have drivers on there website, or archives.

Note that "then" translates as a few years ago :-)

Cheers
Ian B Manners
http://www.os2site dot com/

Computers are like Old Testament gods; lots of rules and no mercy.
    	-- Joseph Campbell

2==============================================

Date: Fri, 03 Aug 2001 09:30:52 +1000
From: Daryl Pilkington <u3232athome.dialix dot com>
Subject: Re: [os2genau] PPPoE default route uses Peer-IP

Hi Ian,
Having one machine with a smaller MTU is critical, even on TCP/IP v4.21.

Note "netstat -n" does *not* show if the MTU has been automatically
dropped to a smaller value than it was set with using setup.cmd!

So its a bit like finding black holes, you can't actually see them, only
the effects!

MTU mismatch will probably cause data packets to be incomplete, causing
multiple retries & eventually if that is unsuccessful, time-outs & error
messages.

I've now got intranet hosts working *extremely* well, but the gateway
running IJF & PPPoE is a dead loss with wget, irrespective of whether I
run it in PASSIVE or ACTIVE mode.
I'm sure it is some obscure local MTU configuration issue since the
PPPoE plug-in is local to wget.

What is very interesting is knowing the symptoms of MTU mismatch.
Most critical is www surfing, ping, tracerte & nslookup are all unlikely
to fail due to MTU mismatch.

WWW SYMPTOMS:
1)
Broken pipe messages
2)
Some images don't load.
3)
Java applets fail.
4)
Sites only work at off-peak times, but seem fail during peak times.
5)
Reloading incomplete pages works.

OTHER SYMPTOMS:
6)
Unable to receive email.
7)
Unable to send emails with large attachments. Short text emails are OK.

Here are my test results which indicate tuning is very much ISP
specific, as theoretically, MTU=1492 should be all I need to accommodate
PPPoE.

SERVER2                          INTRANET HOST   URL
gateway.cf  pppo.cnf  setup.cmd  setup.cmd       1  2  3  4
;           1500      1500       1500            x  x  x  y
;           1492      1500       1500            x  x  x  y
1492        1492      1500       1500            x  x  x  y
1492        1492      1492       1492            y  y  *  y  
1454        1492      1454       1454            y  y  y  y

URL
1 www.anz dot com
2 www.adelaidebank dot com dot au
3 www.hoyts dot com
4 www.

LEGEND:
x = didn't work
y = worked fine
* = some images didn't load, sometimes got broken-pipe message.

-- 
Regards, 

Daryl  Pilkington 

//// The PC-Therapist, Business Computing Integration
O<O  AUSTRALIA
\_/
<O>  OS/2 Warp, Redhat Linux, DB2
     IBM Certified Systems Expert

        email: darylpatpc-therapist dot com dot au
          ICQ: 91914134
          Tel: +61-2-8902-1300
          Mob: +61-425-251-300
          Fax: +61-2-9411-3720
      Mob SMS: 0425251300.0000atorangenet dot com dot au
               (120 characters max, send no carriage returns)


3==============================================

Date: Fri, 03 Aug 2001 16:47:03 +1000
From: Ed Durrant <edurrantatbigpond dot net dot au>
Subject: Re: [os2genau] Hacker questions

I have seen the APC drivers used with non-APC UPSes, so that's probably the ones
you should try first. Presuming you have the APC drivers. (APC=American Power
Conversion).

Ed.

Ian Manners wrote:

> Hi Graham
>
> >the UPS is a SOLA UPS  1050  520RM  unit..

4==============================================

Date: Fri, 3 Aug 2001 08:14:39 -0400
From: Chris Neeson <Chris_Neesonatcompuserve dot com>
Subject: Re: [os2genau] Hacker questions

Hi Graham.

re the UPS monitoring question:

I have a product called LanSafe III for Novell, Microsoft & OS/2,
which claims to manage shutdowns and monitor power and
the UPS itself
( I think LanSafe III is for the network,
             FailSafe III is for standalones )

Unfortunately, I don't have any experience with it yet
because I don't have a UPS.

( my main computer used to be a laptop,
  and I used its battery as a UPS ).

The manual does seem to mention a whole heap
of shutdown options, with instructions for 'installing'
UPS models which aren't included in the install list.

If you like, I can have another look after we finish
shifting house.


Regards
Chris.

------------- Graham emailed -------------------

>Dear  un-infected OS2 users


>out of interest, with all this excitement about virus and worms and
hackers,  now that =

>we are on ADSL and with our Warp 4.5 box and Internet Gateway with Injoy=

Firewall =

>running....

>is there  a way that I can perhaps regularly check to see if some one ha=
s
attempted =

>to hack into our Internet Gateway machine? =


>Is there  software that will perhaps alert me as soon as some one does
this?


>thirdly now that we have ADSL it has freed up a COM port and so we can n=
ow
use =

>our UPS !  We have a rack mounted UPS but it is not actually set up to =

shut down =

>the server cleanly . If we have a blackout in working hours, we are able=

to do this =

>ourselves naturally but at night , the Battery runs out and bingo!!  So =
do
you know of =

>reliable OS2 UPS type softeware and have you had any expericence on its =

>installation?


>I may put this on the List au site as well as they are useful questions.=
...


>Graham Norton FRACP
>Neurologist

>Smart Road Specialist Centre
>Modbury SA 5092

>61 8 8265 4022  (Voice)
>61 8 8386 1795 (Fax)
>gnatsmart-road dot com dot au
