fcheck on linux 10, what happens at 03:00 in the morning?
Linux - SecurityThis forum is for all security related questions.
Questions, tips, system compromises, firewalls, etc. are all included here.
Notices
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Get a virtual cloud desktop with the Linux distro that you want in less than five minutes with Shells! With over 10 pre-installed distros to choose from, the worry-free installation life is here! Whether you are a digital nomad or just looking for flexibility, Shells can put your Linux machine on the device that you want to use.
Exclusive for LQ members, get up to 45% off per month. Click here for more info.
fcheck on linux 10, what happens at 03:00 in the morning?
Hi everyone,
I'm currently installing a Fedora 10 webserver. It's currently connected through a router which has no ports activate in NAT/PAT. My only port allowed by IP tables is 22 (ssh). I'm pretty sure I secured ssh in a good way (no rootlogin, only protocol 2, etc.
I've installed fcheck last night do do a quarterly check of my systemdirectories. I checked it last night before I left it and the fcheck log was clean. Since 03:00 this morging (CET) I'm getting warnings from fcheck for almost every application in /bin and /sbin. The folling is typically happening:
* inodechange
* timechange to 03:00
* filesize grows by around 2 kb
* CRC change
Well, you've got a prelink set there as a daily cronjob.
So maybe prevent it from executing to see if it changes your situation:
Code:
chmod 644 /etc/cron.daily/prelink
My guess is that if you check your system-wide crontab you'll see that the execution time for the daily jobs will match the changes you've been seeing. I don't know about Fedora, but on Ubuntu the file is /etc/crontab.
LinuxQuestions.org is looking for people interested in writing
Editorials, Articles, Reviews, and more. If you'd like to contribute
content, let us know.