Messages in this thread | | | Date | Mon, 8 Mar 1999 15:19:55 -0600 (CST) | From | Oliver Xymoron <> | Subject | Re: Simple DoS...out of resources? |
| |
On Mon, 8 Mar 1999, rewt wrote:
> It is very easy to crash a system simply by viewing a large file with > editor such as pico. It will eat up all the resources and do some > unpredictible things. In my case I viewed a 100mb file as it was reading > it, it filled up all the swap space which is 48mb. It killed most of the > processes including sendmail, sshd, X, syslog. Does anyone have any idea > how can i protect myself against that kind of DoS? My configuration: > P100, 48mb ram, 48mb swap running on kernel 2.2.2.
Use rlimit or ulimit - see the man page for your shell. Alternately, use the limits module from the PAM suite (simplest way with Redhat).
If you're a system administrator on a multi-user system where this is important, you had better start studying up. If you don't know this, there is _a lot_ more you don't know that you should.
-- "Love the dolphins," she advised him. "Write by W.A.S.T.E.."
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |