[leafnode-list] Re: xinetd on centos 7 install

[Matthias Andree]

Am 30.05.2015 um 10:30 schrieb Danil Smirnov:
> Thanks Matthias!
> 
>> Good question.
>>
>> Can you connect internally?
> 
> I'm not familar with any console nntp readers. Are there easy way to do that?
> 
>> Is xinetd actually running or is just some configuration tool listing it
>> (or leafnode) as enabled?
>>
>> Can you check, for instance, with netstat or lsof, what process is
>> listening on port 119?  What address is the listener bound to? Should be
>> the wildcard (0.0.0.0).
> 
> lsof -i | grep xinetd
> xinetd     7581     root    5u  IPv6 16752624      0t0  TCP *:nntp (LISTEN)
> 
> Hm, does this mean that is listen with TCP6 only?

I presume so, on Ubuntu Linux 14.04 LTS,
I get this lsof for Postfix's smtp port (one IPv4 and one IPv6):

COMMAND  PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
master  5156 root   12u  IPv4  22130      0t0  TCP *:smtp (LISTEN)
master  5156 root   13u  IPv6  22131      0t0  TCP *:smtp (LISTEN)

I do not have the CentOS 7 manuals here, only Fedora 20, and there

	flags = IPv4 IPv6

might help. Check the xinetd.conf manual.