Hi,
After reading this article: http://www.securityfocus.com/cgi-bin/sfonline/columnists-item.pl?id=308, I decided to give the forkbomb script a try which is below:
#!/bin/sh
$0 & $0 &
The system was unresponsive for a couple minutes but then FreeBSD killed the script and the system was accessible.
I started looking around for what my process limit was set at but I found a couple different values.
ulimit -a outputs:
core file size (blocks, -c) unlimited data seg size (kbytes, -d) 524288 file size (blocks, -f) unlimited max locked memory (kbytes, -l) unlimited max memory size (kbytes, -m) unlimited open files (-n) 7264 pipe size (512 bytes, -p) 1 stack size (kbytes, -s) 65536 cpu time (seconds, -t) unlimited max user processes (-u) 3632
kern.maxproc is set to 4036
/etc/login.conf reads:
:maxproc=unlimited:\
My questions are:
Am I looking at the correct values?
Which is the actual process limit?
What would you recommend that I set it to in order to have my machine shrug off the fork bomb sooner?
What would be a good process limit for a LAMP webserver?
How would I set the process limits?
Thanks in advance.
- Ryan
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