Yes Master. I will Master. I will study these things you have shown
me. You have so much knowledge, Master, I will try to understand but
there is SO much... Ignorance is NOT bliss... and I will still try
to walk the rice paper, even though all I can manage so far is to
blow my nose on it.
John Vengrouskie
On Aug 16, 2012, at 12:09 PM, Bruce Johnson wrote:
On Aug 16, 2012, at 8:19 AM, JohnV wrote:
iMac intel
In playing with security/firewall settings while reading aricles
on Mac vulnerabilities, I changed a setting and now, when I fire
up the iMac (10.6.8) , after logging in, I get a stacked set of
identical windows, each asking if I want to ALLOW or DENY a named
application to have access. I clicked on DENY on each but would
appreciate a clue about what these things ARE.
You went and fiddled with things you do not comprehend,
Grasshopper, and now it's broken. 8-)
Go forth and undo your doings. These are all things that OS X
normally uses behind the scenes to do things.
Google is your friend, man is your less friendly, but very
knowledgeable local geeky 'friend'.
Denying these services means you : cannot share files, cannot
connect to Windows shares, cannot print.
This is a common consequence of encountering scary security and
vulnerability articles with not enough understanding of the
underlying processes and systems involved.
There are a lot of FUD-ish articles out there that make it sound as
if your Mac is merely seconds away from being completely taken over
by Albanian criminal hacker terrorists intent on using your mac to
trade child porn, nuclear secrets and celebrity email passwords,
and getting you thrown in Gitmo while stealing every cent you own
and taking out 14 billion dollars in loans in your name from banks
run by Russian mobsters, who WILL pay to invent a time machine to
go back in time to threaten castrating your grandfather before your
father was born to force you to pay back the loans...
Out of the box, if nothing is turned on in the Sharing pane, your
Mac is pretty much immune to outside attacks as is. If you're
connected behind a typical DSL or Cable router using NAT, your mac
is pretty much immune to outside attacks as is.
All of these things are parts of services that are called when you
have stuff in the sharing pane ticked.
krb5kdc
Kerberos, used for authentication by a host of services
NAME
krb5kdc - Kerberos V5 KDC
SYNOPSIS
krb5kdc [ -a ] [ -x db_args ] [ -d dbname ] [ -k keytype ]
[ -M mkey-
name ] [ -p portnum ] [ -m ] [ -r realm ] [ -4 v4mode ] [ -n ]
DESCRIPTION
krb5kdc is the Kerberos version 5 Authentication Service
and Key Dis-
tribution Center (AS/KDC).
nmbd
Look, you cannot share with Windows systems now.
NAME
nmbd - NetBIOS name server to provide NetBIOS over IP
naming services
to clients
SYNOPSIS
nmbd [-D] [-F] [-S] [-a] [-i] [-o] [-h] [-V] [-d
<debug level>]
[-H <lmhosts file>] [-l <log directory>] [-p <port
number>] [-s <con-
figuration file>]
DESCRIPTION
This program is part of the samba(7) suite.
smbd
Now you cannot mount volumes from Windows servers, either (or linux
ones, or many NAS boxes)
NAME
smbd - server to provide SMB/CIFS services to clients
SYNOPSIS
smbd [-D] [-F] [-S] [-i] [-h] [-V] [-b] [-d
<debug level>]
[-l <log directory>] [-p <port number(s)>] [-P
<profiling level>]
[-O <socket option>] [-s <configuration file>]
DESCRIPTION
This program is part of the samba(7) suite.
cupsd
The CUPS (heart of the printing system in OS X) central dispatcher.
Since the Mac uses 'network' printing even to use locally attached
printers, preventing cupsd from doing it's thing, means you cannot
print.
cupsd(8) Apple
Inc. cupsd(8)
NAME
cupsd - cups scheduler
SYNOPSIS
cupsd [ -c config-file ] [ -f ] [ -F ] [ -h ] [ -l ] [ -t ]
DESCRIPTION
cupsd is the scheduler for CUPS. It implements a printing
system based
upon the Internet Printing Protocol, version 2.1. If no
options are
specified on the command-line then the default configuration
file /pri-
vate/etc/cups/cupsd.conf will be used.
AppleFileServer
Now you cannot share files with other Macs.
NAME
AppleFileServer -- Apple File Protocol server.
SYNOPSIS
AppleFileServer
DESCRIPTION
How to run the AppleFileServer
Running on MacOS X Desktop
The AppleFileServer is typically launched using the
Sharing
Preference. Launch System Preferences. Select
Sharing. Select
the Services tab. Select Personal File Sharing and
click start.
--
Bruce Johnson
University of Arizona
College of Pharmacy
Information Technology Group
Institutions do not have opinions, merely customs
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