* Bjoern Fischer <[EMAIL PROTECTED]> [000410 01:15] wrote:
> Hello,
> 
> up till now I was convinced that a proper /etc/login.conf
> provides enough protection against silly dos efforts like
> fork bombs.
> 
> Well, while a hard maxproc of 64 protects very well against
> 
>   echo '#!/bin/sh
>   a &
>   a &' > a; chmod 755 a; ./a
> 
> but it fails to prevent that this
> 
>   main(){fork();main();}
> 
> leaves the machine in an unusable state (it does ping
> back, one may break into the kernel debugger, but no
> io).
> 
> Any way to prevent this (without harming the user)?

Please reread the documentation on limits.

cputime         unlimited
filesize        unlimited
datasize        256MB       <-
stacksize       64MB        <-
coredumpsize    unlimited
memoryuse       unlimited
memorylocked    unlimited
maxproc         4115
descriptors     8232
sockbufsize     unlimited

If appropriate limits are in place and you still get problems
then let us know.

-- 
-Alfred Perlstein - [[EMAIL PROTECTED]|[EMAIL PROTECTED]]
"I have the heart of a child; I keep it in a jar on my desk."


To Unsubscribe: send mail to [EMAIL PROTECTED]
with "unsubscribe freebsd-hackers" in the body of the message

Reply via email to