Maybe a security problem involving Linux hosts Post: 302980283

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Special Forums Cybersecurity Maybe a security problem involving Linux hosts Post 302980283 by Corona688 on Thursday 25th of August 2016 05:13:55 PM

08-25-2016

Registered User

Network intrusion happens often enough that they almost certainly weren't after you personally. It's like email spam -- attackers probe thousands of systems hoping to find one easy catch. Did you ask your ISP how many other modems were under attack? For an ISP to even admit that their modems are being attacked hints at a large problem.

When did you lose your LastPass passwords? LastPass has cleared and deactivated accounts by the million to deal with their own intrusion attempts. Once again, probably not personal.

Had HexChat needed to install any updates after not using it for months? Had you installed it from scratch after the big computer-bleach? Once again, probably not personal, just a default setting.

In short, I don't think you're crazy -- I think you have an unclear idea how computer software and computer networking works. These events have very little in common, unclear motivation (why would a hacker want to rename your IRC networks?), and very different methods(random issues in your local computer, vs malicious hacking of a well-known password service, vs intrusion on your ISP's WAN, etc...), too many for me to assume they're all from the same person or have you in particular in mind. Reformatting your computer because someone attacked your modem is akin to burning down your house because someone looked in your window, anyway.

Last edited by Corona688; 08-25-2016 at 06:25 PM..

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mcxquery

mcxquery(1)						    BSD General Commands Manual 					       mcxquery(1)

NAME

     mcxquery -- Managed Client (MCX) compositor query tool

SYNOPSIS

     mcxquery [options] [-user recordName] [-group recordName] [-computer spec]

	      options:

	      -o path			 Writes output to a file at the specified path.

	      -format space | tab | xml  Specifies the format of the output.

	      -computerOnly		 Ignore values for -user and -group.

	      -useCache 		 Return the cached computer settings in the local node if they are available.

	      -raw			 Dumps Directory Service data for records contributing to managed preferences.

	      -forApple 		 Convenience for specifying options when sending bug reports to Apple. Currently enables "-raw" and "-for-
					 mat xml". See usage example below.

DESCRIPTION

     mcxquery is a utility to determine the effective managed preferences for a user logging in to a workgroup from a specific computer.

     -user	Specify the short name of the user record to read managed preferences from. If this parameter is omitted, or a value of "=" speci-
		fied, the short name of the currently logged in console user will be used.

     -group	Specify the short name of the group record to read managed preferences from. A value of "=" may be specified to mean the name of
		the workgroup (if any) chosen for the current login session.

     -computer	Specify the computer record to read managed preferences from. The computer can be specified using either an Ethernet MAC address
		(e.g. "11:22:33:44:55:66"), a Hardware UUID (e.g. "00112233-4455-6677-8899-AABBCCDDEEFF") or the short name of the computer record
		itself (e.g. "lab1_12"). If this parameter is omitted, or a value of "=" specified, the record for the current computer will be
		used.

EXAMPLES

     mcxquery -user jane -group science -computer lab1_12
	      Displays the managed preferences that would be in effect if user "jane" logged in using workgroup "science" from the computer speci-
	      fied in the "lab1_12" computer record.

     mcxquery -user jane -group science -computer 11:22:33:44:55:66
	      Displays the managed preferences that would be in effect if user "jane" logged in using workgroup "science" from a computer with an
	      Ethernet MAC address of 11:22:33:44:55:66.

     mcxquery -user = -group = -computer guest
	      Displays the managed preferences that would be in effect if the current user logged in using the current workgroup into a computer
	      not specified by any computer record (i.e. a "guest" computer).

     mcxquery -user jane -group math
	      Displays the managed preferences that would be in effect if the user "jane" logged into the "math" workgroup on the current com-
	      puter.

     mcxquery -o /tmp/report.txt -format xml -user jane
	      Writes the managed preferences that would be in effect if user "jane" logged into the current computer without a workgroup.  The
	      report is written in XML format to /tmp/report.txt.

     mcxquery -computerOnly -computer lab1_12
	      Displays the managed preferences for the computer specified in the "lab1_12" computer record only. Useful for determining managed
	      settings when computer is at login window.

     mcxquery -computerOnly -computer 00112233-4455-6677-8899-AABBCCDDEEFF
	      Displays the managed preferences for the computer with the Hardware UUID "00112233-4455-6677-8899-AABBCCDDEEFF". Supported on Mac OS
	      X 10.6 and later.

     mcxquery -forApple -o results.plist
	      Creates a plist, suitable for submitting along with bug reports to Apple, containing the managed preferences for the current user on
	      the current computer. Also includes relevant records from Directory Services. Supported on Mac OS X 10.7 and later.

SEE ALSO

     dscl(1)

MacOSX								 November 30, 2010							    MacOSX