Discussion:
[Nagios-users] Port Numbers required for NAGIOS
Kahlon, Robby
2008-04-04 00:39:58 UTC
Permalink
I am a new Nagios user and trying to setup Nagios client on one of the
servers in DMZ. The Nagios server resides on the INSIDE LAN and it works
fine with all other LAN servers.



My question is which ports do I need to open in the firewall so that
Nagios client running on DMZ server can communicate with Nagios server
on the INSIDE LAN and vice-versa.



Thanks,

Robby
Patrick Morris
2008-04-04 00:54:54 UTC
Permalink
I am a new Nagios user and trying to setup Nagios client on one of the servers in DMZ. The Nagios server resides on the INSIDE LAN and it works fine with all other LAN servers.
My question is which ports do I need to open in the firewall so that Nagios client running on DMZ server can communicate with Nagios server on the INSIDE LAN and vice-versa.
Your question doesn't make sense.

Please be specific about what you're trying to set up, what
software you're trying to connect to, what versions you're using,
and what happens when you try to do it.
Kahlon, Robby
2008-04-04 01:29:54 UTC
Permalink
We are using Nagios version 2.0

The Windows 2003 server which I need to minitor and the Nagios server
are on two different subnets. All of the traffic from Nagios server to
Windows 2003 server has to go via a Cisco firewall.

Now, which ports do I need to open in the firewall so that Nagios server
can communicate with the Windows 2003 server (Nagios Client)?

Hope it makes some sense now.


-----Original Message-----
From: Patrick Morris [mailto:***@hp.com]
Sent: Friday, 4 April 2008 10:55 AM
To: Kahlon, Robby
Cc: nagios-***@lists.sourceforge.net
Subject: Re: [Nagios-users] Port Numbers required for NAGIOS
Post by Kahlon, Robby
I am a new Nagios user and trying to setup Nagios client on one of the
servers in DMZ. The Nagios server resides on the INSIDE LAN and it works
fine with all other LAN servers.
Post by Kahlon, Robby
My question is which ports do I need to open in the firewall so that
Nagios client running on DMZ server can communicate with Nagios server
on the INSIDE LAN and vice-versa.

Your question doesn't make sense.

Please be specific about what you're trying to set up, what
software you're trying to connect to, what versions you're using,
and what happens when you try to do it.
Max
2008-04-04 02:20:16 UTC
Permalink
Hi,
Post by Kahlon, Robby
The Windows 2003 server which I need to minitor and the Nagios server
are on two different subnets. All of the traffic from Nagios server to
Windows 2003 server has to go via a Cisco firewall.
Now, which ports do I need to open in the firewall so that Nagios server
can communicate with the Windows 2003 server (Nagios Client)?
If you are using NRPE, you will need to open TCP port 5666

http://nagios.sourceforge.net/docs/nrpe/NRPE.pdf

If you are using an SNMP agent on the Windows host, you will need to
open UDP 161 for SNMP GET and WALK requests. Use SNMP v3 if it is
available for your agent.

If you want to send SNMP traps from your Windows host to Nagios, you
will need to open an ACL orginating from the Windows server and
terminating at the Nagios server on port UDP 162. Use SNMP v3 if it
is available with the agent you are using.

if you are submitting passive checks from the Windows host to the
Nagios server using send_nsca and the NSCA daemon, you will need to
open an ACL originating from the Windows server and terminating at the
Nagios server on port TCP 5667.

- Max
Kahlon, Robby
2008-04-07 06:54:19 UTC
Permalink
Max, Thanks a lot for the advice. I will try it.

-Robby

-----Original Message-----
From: nagios-users-***@lists.sourceforge.net
[mailto:nagios-users-***@lists.sourceforge.net] On Behalf Of Max
Sent: Friday, 4 April 2008 12:20 PM
To: nagios-***@lists.sourceforge.net
Subject: Re: [Nagios-users] Port Numbers required for NAGIOS

Hi,
Post by Kahlon, Robby
The Windows 2003 server which I need to minitor and the Nagios server
are on two different subnets. All of the traffic from Nagios server
to
Post by Kahlon, Robby
Windows 2003 server has to go via a Cisco firewall.
Now, which ports do I need to open in the firewall so that Nagios
server
Post by Kahlon, Robby
can communicate with the Windows 2003 server (Nagios Client)?
If you are using NRPE, you will need to open TCP port 5666

http://nagios.sourceforge.net/docs/nrpe/NRPE.pdf

If you are using an SNMP agent on the Windows host, you will need to
open UDP 161 for SNMP GET and WALK requests. Use SNMP v3 if it is
available for your agent.

If you want to send SNMP traps from your Windows host to Nagios, you
will need to open an ACL orginating from the Windows server and
terminating at the Nagios server on port UDP 162. Use SNMP v3 if it
is available with the agent you are using.

if you are submitting passive checks from the Windows host to the
Nagios server using send_nsca and the NSCA daemon, you will need to
open an ACL originating from the Windows server and terminating at the
Nagios server on port TCP 5667.

- Max

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