how to check smtps, pop3s, imaps, ldpas withy nrpe ?

[Alex Dehaini]

Connect to the host locally and telnet on each of the ports that are opened.
Verify if you have a firewall running that are filtering access to the
machine in anyway.

telnet localhost 25 - if that works

Connect another machine to the same switch and telnet ip.addr.xx.xx 25 and
see if you can connect

If these work, there is no reason why nagios plugins shouldn't work

Regards,
Lex

On Tue, Sep 2, 2008 at 9:00 AM, Arno Lehmann <al at its-lehmann.de> wrote:

> Hello,
>
> please respond to the list.
>
> 02.09.2008 10:44, J. Bakshi wrote:
> > Arno Lehmann wrote:
> >> Hi,
> >>
> >> 02.09.2008 09:37, J. Bakshi wrote:
> >>> Dear list,
> >>>
> >>> I have installed
> >>>
> >>> nagios-nrpe   2.0
> >>> nagios-plugins  1.4
> >>> nagios-plugins-extras 1.4
> >>>
> >>> How can I check smtps, ldaps, pop3s, imaps  with nrpe ?
> >>> the default check_smtp ; check_imap etc can't check the SSL version of
> >>> the services.
> >> Mine can; call them with -h for help and read the output. I usually
> >> use the -S swich plus, as needed, -p for the target port.
> >>
> >> Example output:
> >> $ /usr/local/nagios3/libexec/check_imap -H 192.168.1.2 -S -p 993 -D 12
> >> OK - Certificate will expire on 04/27/2009 21:13.
> >> IMAP OK - 0.060 second response time on port 993 [* OK IMAP4 Ready
> >> balrog.privat.lehleute.de 0001b1a4]|time=0.059891s;;;0.000000;10.000000
> >>
> >
> > Hi Arno,
> >
> > first of all thanks for your kind response. I have also found the "-S"
> > option but the story is different here and it is
> > negative :-(
> >
> > here is the nmap output which proves the required port are open
>
> It does not actually prove the services are listening on localhost,
> and that access is not filtered, for example by hosts files.
>
> > PORT     STATE SERVICE
> > 25/tcp   open  smtp
> > 80/tcp   open  http
> > 143/tcp  open  imap
> > 389/tcp  open  ldap
> > 443/tcp  open  https
> > 465/tcp  open  smtps
> > 993/tcp  open  imaps
> > 995/tcp  open  pop3s
> > 1234/tcp open  hotline
> > 2000/tcp open  callbook
> > 3306/tcp open  mysql
> >
> > more important I can use the SSL enabled services, like pop3s , smtps
> etc...
> >
> > If I check with check_smtp I get the following
> >
> > /usr/lib/nagios/plugins/check_smtp -H localhost  -p 465 -S  -v
> > CRITICAL - Socket timeout after 10 seconds
>
> Check with the ip address that is usually used - it's quite possible
> the service is not bound to localhost.
>
> > And here is the check fir ftp :-(
> >
> > /usr/lib/nagios/plugins/check_ftp -H localhost  -p 60021 -S  -v
> > CRITICAL - Cannot make  SSL connection 13948:error:140770FC:SSL
> > routines:SSL23_GET_SERVER_HELLO:unknown protocol:s23_clnt.c:478:
> >
> > Plese note I am practically using ftps, smtps, pop3s
> >
> > I have no clue really.
> > Hope you can enlighten me to point out my mistake.
>
> Try what I suggested... that's what I'd do now.
>
> Arno
>
> > with many thanks
> >
> >> Arno
> >>
> >>> thanks
> >>>
> >>>
> >
> >
>
> --
> Arno Lehmann
> IT-Service Lehmann
> Sandstr. 6, 49080 Osnabrück
> www.its-lehmann.de
>
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-- 
Alex Dehaini
Developer
Site - www.alexdehaini.com
Email - alexdehaini at gmail.com
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