need howto for SELinux config--ssh on non-standard port

Daniel J Walsh dwalsh at redhat.com
Wed Jan 20 19:26:08 UTC 2010


On 01/19/2010 05:28 PM, John Poelstra wrote:
> Daniel J Walsh said the following on 01/07/2010 05:23 AM Pacific Time:
>> On 01/06/2010 09:29 PM, John Poelstra wrote:
>>> I'm running sshd on a high (>1024) port number and cannot find a clear
>>> step by step guide for configuring this correctly on Fedora 12 on
>>> google.... I've come across lots of random bugs and forum questions, but
>>> nothing that starts at the beginning of the process through the end.
>>>
>>> I'm a total SELinux newbie and usually just disable itall together when
>>> things like this happen.  I'm trying to change my ways :)   Can anyone
>>> provide any URLs or the steps?
>>>
>>> If someone can provide the steps here I'll blog about it to get it
>>> documented so others do not have to suffer the same fate.
>>>
>>> Thanks,
>>> John
>>>
>>
>> http://docs.fedoraproject.org/selinux-managing-confined-services-guide/en-US/F11/html/sect-Managing_Confined_Services-Configuration_examples-Changing_port_numbers.html
>>
>> If the avc is for an undefined port "port_t"  then you can do the command
>>
>> # semanage port -a -t ssh_port_t PORTNUM
>>
>> If you are listing to a defined port NAME_port_t, then you need to load a custom policy module
>>
>> # grep ssh /var/log/audit/audit.log | audit2allow -m myssh
>> # semodule -i myssh.pp
> 
> Still having problems
> 
> # grep ssh /var/log/audit/audit.log | audit2allow -m myssh
> 
> module myssh 1.0;
> 
> # cat mySshdPort.te
> 
> module mySshdPort 1.0;
> 
> #  semodule -i myssh.pp
> semodule:  Failed on myssh.pp!
> 
> --------------------------------
> 
> Considering all the data /var/log/audit/audit.log, how does 
> 'audit2allow' know to select the right data from the mass being piped to to?
> 
> Thanks,
> John
> 
> 
> 
> 
> 
> 
That is because it is not finding any AVC messages?


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