about nsca

Andreas Ericsson ae at op5.se
Mon Jun 20 15:57:12 CEST 2005
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Daniel Szortyka wrote:
> Hi Roberto,
> 
> Thanks for your help, ok!?
> 
> When I execute a "nmap -sT localhost -p 5667"... return this:
> PORT     STATE SERVICE
> 5667/tcp open  unknown
> Nmap run completed -- 1 IP address (1 host up) scanned in 0.147 seconds
> 
> When I execute a "netstat -nat"... return this:
> tcp        0      0 0.0.0.0:5667                0.0.0.0:*             
>      LISTEN
> 

So it's open and listening. No probs so far then.

> and when I execute a "nmap -v localhost"... dont return nothing
> related to port 5667.
> 

Well, you wouldn't, as nmap per default doesn't scan port 5667.

> in the /var/log/messages when I try to telnet from my machine to nsca
> server, return this log:
> Jun 20 09:58:04 pernalonga nsca[26684]: Host 192.168.0.171 is not
> allowed to talk to us!

Which is expected, since you're not.

> Jun 20 09:58:46 pernalonga nsca[26686]: Error: Network server
> getpeername() failure (107: Transport endpoint is not connected)
> 
> 
> Stay more clear my problem now? :(
> 
> Thanks, 
> I'm trying to modify some params, if return a positive result I put here!!! :)
> 

Telnet (or netcat) in from the host you're expecting answers from, and 
set disabled = no in the xinetd config file. It will work.

> Daniel
> 
> 
> On 6/20/05, Balestra, Roberto <Roberto.Balestra at getronics.com> wrote:
> 
>>Hi,
>>I don't understand your problem. If you run 'netstat -nat' you should see nsca port open.
>>If you run 'nmap -sT localhost -p 5667' you sould see nsca port open.
>>If you use only 'nsca localhost' only a few set of port (well-known) are scanning (use nmap -v localhost to see how much port are scanning).
>>I hope it might be usefull.
>>bye
>>        Roberto
>>
>>
>>>-----Original Message-----
>>>From: nagios-users-admin at lists.sourceforge.net
>>>[mailto:nagios-users-admin at lists.sourceforge.net]On Behalf Of Daniel
>>>Szortyka
>>>Sent: lunedì 20 giugno 2005 14.26
>>>To: nagios-users at lists.sourceforge.net
>>>Subject: Re: [Nagios-users] about nsca
>>>
>>>
>>>Hi,
>>>
>>>Sorry, but the service starts sucessfully but I still don't seeing the
>>>service when I execute a nmap localhost....
>>>
>>>here is my nsca.conf in /etc/nagios/
>>>
>>>server_port=5667
>>>server_address=192.168.10.2
>>>allowed_hosts=127.0.0.1 192.168.10.3 192.168.0.171
>>>nsca_user=nagios
>>>nsca_group=nagios
>>>debug=0
>>>command_file=/usr/local/nagios/var/rw/nagios.cmd
>>>alternate_dump_file=/var/spool/nagios/nsca.dump
>>>aggregate_writes=0
>>>append_to_file=0
>>>max_packet_age=30
>>>password=Supp0rt1t
>>>decryption_method=2
>>>
>>>Some idea about the problem?
>>>
>>>Thanks!
>>>
>>>Daniel
>>>
>>>On 6/20/05, Balestra, Roberto <Roberto.Balestra at getronics.com> wrote:
>>>
>>>>Hi,
>>>>change 'disable = yes' to 'disable = no' and restart xinetd
>>>>Bye
>>>>        Roberto
>>>>
>>>>
>>>>>-----Original Message-----
>>>>>From: nagios-users-admin at lists.sourceforge.net
>>>>>[mailto:nagios-users-admin at lists.sourceforge.net]On
>>>
>>>Behalf Of Daniel
>>>
>>>>>Szortyka
>>>>>Sent: lunedì 20 giugno 2005 13.59
>>>>>To: nagios-users at lists.sourceforge.net
>>>>>Subject: [Nagios-users] about nsca
>>>>>
>>>>>
>>>>>Hello folks,
>>>>>
>>>>>I'm trying to execute a nsca daemon over a Fedora Core 3 with
>>>>>Nagios 2.0b2
>>>>>
>>>>>The service start with sucessfully....
>>>>>
>>>>>my /etc/services:
>>>>>nsca            5667/tcp                        # NSCA
>>>>>
>>>>>my xinetd.d/nsca :
>>>>>
>>>>>service nsca
>>>>>{
>>>>>        flags           = REUSE
>>>>>        type            = UNLISTED
>>>>>        port            = 5667
>>>>>        socket_type     = stream
>>>>>        wait            = no
>>>>>        user            = nagios
>>>>>        group           = nagios
>>>>>        server          = /usr/sbin/nsca
>>>>>        server_args     = -c /etc/nagios/nsca.cfg --inetd
>>>>>        log_on_failure  += USERID
>>>>>        disable         = yes
>>>>>        only_from       = 192.168.10.0
>>>>>}
>>>>>
>>>>>BUT, when I execute "nmap localhost" I can't see my 5667
>>>
>>>port opened
>>>
>>>>>or I cant telnet the port from my machine to my nsca server...
>>>>>somebody already passed by this problem?
>>>>>
>>>>>Thanks for all...
>>>>>
>>>>>Daniel Szortyka
>>>>>Brasil - Rio Grande do Sul - Porto Alegre
>>>>>
>>>>>
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>>
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>>
> 
> 
> 
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> 

-- 
Andreas Ericsson                   andreas.ericsson at op5.se
OP5 AB                             www.op5.se
Lead Developer


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