Snort mailing list archives

Re: Snort start up on Multiple interface


From: Milo Velimirovic <milov () uwlax edu>
Date: Thu, 29 Apr 2004 09:22:27 -0500


On Apr 28, 2004, at 4:23 PM, Matt Kettler wrote:

At 04:40 PM 4/28/2004, Edin Dizdarevic wrote:

> You mean you don't chroot your snort instances? :)

Why should I do that on an SELinux? ;)

Clearly you're not sufficiently paranoid, as a good SELinux user would chroot anyway. After all, mistakes can be made in MAC configurations :)

They'd also:
        use a read-only network tap
make sure the kernel is compiled without loadable module support compile snort with some form of stack-overflow detector enhanced gcc make sure that snort box was not able to talk to hosts outside your network, not even for http download, no matter what user tries. (ie: firewall enforced) make sure the snort box cannot relay email through your mailserver to hosts outside your network. make sure the snort box cannot perform DNS resolution of outside zones (dig www.snort.org should fail). wrap the entire machine in 5 layers of copper foil, making sure to cover up the LEDs, monitor, and keyboard in the process

You left out the operator/sysadmin enhancements:
http://www.stopabductions.com/

disconnect the machine from all power or network connections and burry it in 6 feet of concrete with no cables coming out.

But it's all a matter of how paranoid you want to be. My real point is that it never hurts to be oversecure unless you're loosing functionality you need.

Clearly chrooting under selinux is a bit redundant, but it doesn't hurt useful functionality, and protects you from mistakes so it does add some security.








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Milo Velimirović       <milov "at" uwlax "dot" edu>
Unix Computer Network Administrator
University of Wisconsin - La Crosse
La Crosse, Wisconsin 54601 USA   43 48 05 N 91 14 22 W

There are 10 different types of people in the world.
Those who can read binary and those who can't.




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