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SubjectRe: Disallowing user access to "listening" ports.
On Mon, 11 Jan 1999, Alexander Viro wrote:

> On Mon, 11 Jan 1999, Amanda Shuler wrote:
>
> > I apologize advance for my extreme lack of knowledge in linux development
> > of any kind. I am only presuming to post to this list under the advice of
> > a friend.
> >
> > I want to make it impossible for daemons to be started under any UID
> > that is greater than 100, except for UID 65534.
> >
> > Some suggested that I make a patch for my kernel that would do something
> > such as:
> >
> > if UID > 100 and UID != 65534
> > then "do not open socket"
>
> ... which means that your lusers will be unable to use email, news, FTP
> *and* HTTP (i.e. no web for them). Is that *really* the thing you want?

Since I missed the first post, I'll reply here.. :)

What the poster probably would rather do is disable nohup to prevent users
from leaving things running after they have logged off..

Doing this is a rather trivial kernel change, and I think I've seen
patches floating around...



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