[erlang-questions] Is there a way to change the privileges of a working program?

Denis Benoit <>
Thu Jun 25 02:28:02 CEST 2009


Claes Wikstrom a écrit :
> Sergey Samokhin wrote:
>> Hello!
>>
>> Often we have to run some kinds of our erlang programs with root
>> privileges, e.g. to allow them to bind a system port (< 1024). It is
>> quite dangerous, because once your web-server has been hacked by a bad
>> guy, the whole system can be affected. I was very impressed to know
>> that some servers drop root priveleges right after port binding.
>>
>> Is there a way which will help me to change the privileges of a
>> running program to the minimum after a system port has been bound?
>>
>> Thanks.
>>
>
> I write on this topic at:
>
>
> http://yaws.hyber.org/privbind.yaws
>
> /klacke
>
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>
Another possible solution on Linux would be to use capabilities

http://www.securityfocus.com/infocus/1400

http://sites.google.com/site/fullycapable/

/Denis



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