Hi,

i have installed CentOS 5.3 on my laptop. I need tips how to make my desktop "secure" from attacks in my internal network or external. I am new in linux, i have a lot of knowledge in win security, but in linux i am n00b. Soo i need advice what to stop, what to start like in windows.
Help me, tnx.

Hi Kevin,

difficult to say in a few lines, since to don't know your enviroment
or tasks.

My tips: Take care to get the latest updates, remove unused services
and prefer to use ssh instead of ftp, telnet or the "r"-tools.

The rest is often common sense.

cu,
Joe

Installing an obsolete release is not recommended. Please read the CentOS 5.4 Release Notes and follow the procedure there to update. The Wiki has some good articles on security:

http://wiki.centos.org/HowTos/Security
http://wiki.centos.org/HowTos/OS_Protection
http://wiki.centos.org/HowTos/SELinux
http://wiki.centos.org/TipsAndTricks/SelinuxBooleans

Will i have any problems with my graphic card NVidia QUADRO FX570??

I had problems with this driver. I upgraded my fresh copy of 5.3 to 5.4 (kernel,...everything), bofore i installed my graphic driver. Then my X was crashed and i reinstalled system.

A re-install should not be necessary because of a problem with a video card driver. Can't say if you might have problems, particularly as you have not revealed where you got the problematic driver. Installing a driver from a known repository, if available, is generally recommended over using the manufacturer's installer. This Wiki article on installing a video card may help.

I downloaded from nvidia site and this is good driver. Now everything is working perfectly. I am just asking will i have any problems with graphic if i upgrade kernel and other programms.

You are very likely to have problems with the downloaded driver after a kernel upgrade. This is one reason that installing the packaged drivers is recommended, and particularly the kABI-tracking kmod drivers such as those from ELRepo (if available for your hardware).

Further information -- FAQ #1 here.

Hmm, when i look at my console and type rpm -qa |grep kernel i get:

kernel-devel-2.6.18-164.2.1.el5
kernel-PAE-2.6.18-128.el5
kernel-headers-2.6.18-164.2.1.el5
kernel-2.6.18-164.2.1.el5

So the kernel is on the last version i think?

No - current kernel release is 2.6.18-164.6.1.el5 and I see that you have both standard i686 and PAE kernels installed, but only the -devel rpm for the standard kernel. This may be a problem if you are using the PAE kernel (for more than ~3.5GB RAM) and want to use proprietary drivers that require rebuilding modules.

Huh, i am amater. So tell me what to do? yum install kernel-devel ?

You already have kernel-devel. Which kernel are you running? "uname -rmi" will tell. Unless you're going to build kernel modules it doesn't matter. The real question is, if you want to use packages for the graphics driver as recommended, or go with the manufacturer's installer approach to build/install the proprietary driver module.

uname -rim

2.6.18-164.2.1.el5 i686 i386

Can you tell me the command how to see drivers installed. I cannot find any good command on google.com

Is it good to write in this topic about my problems. Those problems are not for security.

Looks like a new thread should have been started back about post #5. My bad.

As far as drivers available read the link in post #5 for a hint. Please do start a new thread for new questions.