Re: Questions regarding tripwire.

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On Tue, 07 Oct 2003 09:34:29 -0400, Edward Croft wrote:

> Okay, I have been beating my head regarding tripwire. First off, let me
> thank Bret Hughes for his twpolclean.pl. That decreased my error count
> due to files not on the system. 
> My question though has to do with the Change Time. I back up my systems
> every night and that appears to change a time. I added the -a to the
> rule set, but I still get the following:
> 
> Modified object name:  /etc/sysconfig/network-scripts/ifdown-cipcb
> 
>   Property:            Expected                   
> Observed                    
>   -------------        -----------                
> -----------                 
> * Change Time          Sun Oct  5 22:46:15 2003    Mon Oct  6 22:46:24
> 2003    
> 
> 
> This basically renders tripwire useless as it reports on every file that
> gets backed up. What am I missing here?

Examine the files with the "stat" utility. What does the "Modify"
field say? If your backup technique updates the modified/changed
timestamp, you cannot monitor that attribute with Tripwire.

The -a rule checks file's access times. Any file's access time is
updated when it is read/accessed. You certainly don't want that for
files which get backed up frequently, because the backup process would
update the file access time. The -a rule makes sense only for archived
files which should not be accessed at all, but which you keep on the
hard disk nevertheless.

- -- 
Michael, who doesn't reply to top posts and complete quotes anymore.

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