Hello Again,
I realize this is probably not the right list for this info, but just as
clarification...
(I won't continue this info, in this list - thanks for your patience with this)
You're right Burton, the programming code for analog lines can be 2500 as well
as 500 (in Nortel systems). Another name for what Ogden mentioned as CO lines is also
MB1 or just B1 (business 1) lines and those are similar to your home phone line, it
does not go through the PBX and is powered by the CO (central office) so it will work
even if the power goes off on the PBX. You can check those by removing the hand set
from any phone and plugging it into the phone port. If it has dial tone it is an
analog line, digital lines will not give any tone (2616, 2008, 3904, 3905 etc)
thanks,
Paul
-----Original Message-----
From: Burton M. Strauss III [mailto:[EMAIL PROTECTED]]
Sent: Thursday, July 11, 2002 8:38 AM
To: [EMAIL PROTECTED]
Cc: Ogden, Earl; Paul Blechschmidt; 'Harish Gondavale'
Subject: RE: Modems detection/ patches implementation
BTW, the "secret" telco code name for these analog lines is often "2500
lines"
(IIRC it's from the 2500Hz bandwidth, but that might just have been the
centrex feature code)
And, FWIW, CO means "Central Office"
And techically, they are trunks not lines if they go into the PBX.
The other place to look is on the walls. The little beige termination boxes
usually have the phone # written on them (but it may have the wrong area
code). Use a $10 phone to test if they're live. If they are, there is a
call back # you can use to find out the #, but calling the phone next to you
with callerid enabled also works... (no, I don't remember the call back # -
it differs in different parts of the country and changes frequently).
-----Burton
-----Original Message-----
From: Ogden, Earl [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, July 09, 2002 10:58 AM
To: 'Paul Blechschmidt'; 'Harish Gondavale';
[EMAIL PROTECTED]
Subject: RE: Modems detection/ patches implementation
Good Afternoon,
Checking with the PBX admins is an excellent start. Another step would
be to ask them for the numbers of any CO lines coming into the place. Most
PBXs have back up lines in the event of a power failure. Also there may be
legacy CO lines left over that may be in use. Lastly check to see who has a
local fax machine at their desk. May multifunction faxes can act as a
modem.
Luck,
Earl Ogden
Network Specialist
Regional Training Institute
CCCCD
925-930-8366 xt 8209
Cell: 925-768-0030
-----Original Message-----
From: Paul Blechschmidt [mailto:[EMAIL PROTECTED]]
Sent: Monday, July 08, 2002 12:15 PM
To: 'Harish Gondavale'; [EMAIL PROTECTED]
Subject: RE: Modems detection/ patches implementation
Hello Harish,
You can always try the reverse approach. Since it appears you are
in a large company, chances are you're using a PBX. The folks who manage
that can tell you exactly who has analog lines (most PBX phones are digital)
Modems cannot dial out over digital (PBX) lines. Typically one of two
things happen, the port on the line card disables or the modem in the
computer fries.
Check with your Telco folks and they can get you started in the
right direction, or at least they can help narrow that possible number of
systems to check. In my experience ( I do both network and telco work) very
few people have analog lines anymore. There is rarely a good business case
for one in an office or cube.
HTH,
Paul
-----Original Message-----
From: Harish Gondavale [mailto:[EMAIL PROTECTED]]
Sent: Thursday, July 04, 2002 9:01 PM
To: [EMAIL PROTECTED]
Subject: Modems detection/ patches implementation
Hi ,
I have two questions related to security,
1. Is there any way to find out the machines having
modems connected to them in a LAN. I wanted to find
out the unauthorized modems connected to workstation
(Win 95, 98, NT 4, W2K, macs, Sun WS)and servers etc.
I heard about some software which dials the range of
phone no.s and checks for modem, but it's not
practicle in our environment.
2. Is there any good software distribution tool
especially for distributing OS/application patches and
small softwares. This is required as an emergency tool
in case existing Tivoli tool fails becasue of some
breakdown. This tool should not be very expenssive and
should cater upto 2500 machines.
Thanks in advance for help.
Bye.
Harish
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