HOWTO Logging tcp binding on permissive mode

[Dominick Grift]

On Mon, Jan 24, 2011 at 09:49:01AM +0100, François Chenais wrote:
> Hello,
> 
> 
> I would like to log process binding on tcp ports > 1023.

something like this may work:

mkdir mytest; cd mytest; echo "policy_module(mytest, 1.0.0) gen_require(\` attribute domain, userdomain, port_type; ') auditallow { userdomain domain } port_type:tcp_socket name_bind;" > mytest.te; make -f /usr/share/selinux/devel/Makefile mytest.pp; sudo semodule -i mytest.pp

Then any attempts to bind tcp_sockets to port_type ports by domain as well as userdomain will be logged in /var/log/audit/audit.log.

You may, or may not, be able to do similar things by using the audit suite instead (man auditctl)

> 
>   "On YYYY/MM/DD  hh:mm:ss, which account ran the process X listening on
> port aaaa"
> 
> Is there any way to do this with SElinux on permissive mode ?
> 
>    - using système policy ?
>    - creating a new policy ?
>    - ... ?
> 
> Thanks a lot in advance !
> 
>         François

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