How to test remote ports 🔗 link

On Tue, Jan 17, 2023 at 5:52 PM Christoph Zechner <user-249716582ccc@xymon.invalid> wrote:

Hi,

I've been trying to establish a remote port check, but cannot get it to
work. After reading the man pages and the corresponding topics on the
mailing list, I've configured a test like this:

PORT REMOTE=1.2.3.4:80

but the remote port always comes back as down, even though it is up. Am
I doing something wrong? Local port checks all work perfectly, only the
remote ones do not.

Am I doing something wrong here?

Context: I am using local mode on all clients, so I'm putting all my
checks in /etc/xymon/localclient.cfg, but this should not effect this
check, right?

Thanks in advance!

Best regards
Christoph Zechner

wrote:

Is 1.2.3.4 your Xymon server or the host IP?  The 1.2.3.4 in your example
is the local addr that it would request from.  If you don't care, you could
use *:80.

https://xymon.com/help/manpages/man5/analysis.cfg.5.html

On Tue, Jan 17, 2023 at 5:52 PM Christoph Zechner <user-249716582ccc@xymon.invalid>
wrote:

Hi,

I've been trying to establish a remote port check, but cannot get it to
work. After reading the man pages and the corresponding topics on the
mailing list, I've configured a test like this:

PORT REMOTE=1.2.3.4:80

but the remote port always comes back as down, even though it is up. Am
I doing something wrong? Local port checks all work perfectly, only the
remote ones do not.

Am I doing something wrong here?

Context: I am using local mode on all clients, so I'm putting all my
checks in /etc/xymon/localclient.cfg, but this should not effect this
check, right?

Thanks in advance!

Best regards
Christoph Zechner

On 18/01/2023 21:15, Josh Luthman wrote:

Is 1.2.3.4 your Xymon server or the host IP?? The 1.2.3.4 in your example is the local addr that it would request from.? If you don't care, you could use *:80.

On Tue, Jan 17, 2023 at 5:52 PM Christoph Zechner <user-249716582ccc@xymon.invalid <mailto:user-249716582ccc@xymon.invalid>> wrote:

    Hi,

    I've been trying to establish a remote port check, but cannot get it to
    work. After reading the man pages and the corresponding topics on the
    mailing list, I've configured a test like this:

    but the remote port always comes back as down, even though it is up. Am
    I doing something wrong? Local port checks all work perfectly, only the
    remote ones do not.

    Am I doing something wrong here?

    Context: I am using local mode on all clients, so I'm putting all my
    checks in /etc/xymon/localclient.cfg, but this should not effect this
    check, right?

    Thanks in advance!

    Best regards
    Christoph Zechner
    <

On 18/01/2023 23:52, Jeremy Laidman wrote:

I would try *:80 as Josh suggested. It might not be exactly what you want, but it might help to narrow down where the problem is.

I tend to use regular expressions, perhaps because of the examples in analysis.cfg.

In case it helps, here's an example that works for me, albeit from the analysis.cfg file (I don't use client mode anywhere):

PORT "REMOTE=%([.:]179)$" state=ESTABLISHED min=0 max=4 color=yellow "TEXT=bgp connections out (TCP/179)"

I don't believe the quotes around "REMOTE=..." are important - it's just how I tend to use regular expressions.

J

On Thu, 19 Jan 2023 at 07:43, Josh Luthman <user-4c45a83f15cb@xymon.invalid <mailto:user-4c45a83f15cb@xymon.invalid>> wrote:

    Is 1.2.3.4 your Xymon server or the host IP?? The 1.2.3.4 in your
    example is the local addr that it would request from.? If you don't
    care, you could use *:80.

    https://xymon.com/help/manpages/man5/analysis.cfg.5.html
    <https://xymon.com/help/manpages/man5/analysis.cfg.5.html>;

    On Tue, Jan 17, 2023 at 5:52 PM Christoph Zechner <user-249716582ccc@xymon.invalid
    <mailto:user-249716582ccc@xymon.invalid>> wrote:

        Hi,

        I've been trying to establish a remote port check, but cannot
        get it to
        work. After reading the man pages and the corresponding topics
        on the
        mailing list, I've configured a test like this:

        PORT REMOTE=1.2.3.4:80 <http://1.2.3.4:80>;

        but the remote port always comes back as down, even though it is
        up. Am
        I doing something wrong? Local port checks all work perfectly,
        only the
        remote ones do not.

        Am I doing something wrong here?

        Context: I am using local mode on all clients, so I'm putting
        all my
        checks in /etc/xymon/localclient.cfg, but this should not effect
        this
        check, right?

        Thanks in advance!

        Best regards
        Christoph Zechner
        <

    <

Hi,

I've been trying to establish a remote port check, but cannot get it to work. After reading the man pages and the corresponding topics on the mailing list, I've configured a test like this:

PORT REMOTE=1.2.3.4:80

but the remote port always comes back as down, even though it is up. Am I doing something wrong? Local port checks all work perfectly, only the remote ones do not.

Am I doing something wrong here?

Context: I am using local mode on all clients, so I'm putting all my checks in /etc/xymon/localclient.cfg, but this should not effect this check, right?

Thanks in advance!

Best regards
Christoph Zechner

You should just add an http test to the configuration and run it as a network test. In hosts.cfg:

1.2.3.4 myhost? # http://1.2.3.4/

Hi,

I've been trying to establish a remote port check, but cannot get it to work. After reading the man pages and the corresponding topics on the mailing list, I've configured a test like this:

PORT REMOTE=1.2.3.4:80

but the remote port always comes back as down, even though it is up. Am I doing something wrong? Local port checks all work perfectly, only the remote ones do not.

Am I doing something wrong here?

Context: I am using local mode on all clients, so I'm putting all my checks in /etc/xymon/localclient.cfg, but this should not effect this check, right?

Thanks in advance!

Best regards
Christoph Zechner

On 19/01/2023 08:43, Henrik Juul St?rner wrote:

Den 19.01.2023 kl. 08.13 skrev Christoph Zechner:

why are you trying to do it with a client-side test? 

Because I thought this was the idea behind the remote port check, but I now see my error here.

You should just add an http test to the configuration and run it as a network test. In hosts.cfg:

1.2.3.4 myhost? # http://1.2.3.4/

This does not test for the port though.

The hosts.cfg entry above _does_ test port 80 by establishing a connection to the port, sending an http request and verifying the response.

Port 80 was just an example for a random port, if I wanted to check port 3389 on a remote Windows machine, how would I do that?

The protocols.cfg file lists the various network protocols that Xymon knows about (and you can add your own, if you need any).

Port 3389 is the RDP port, which is one of the protocols Xymon knows. So to test for that, use

1.2.3.4 myhost # rdp

Add as many network tests as you like, eg. if you want to test host 1.2.3.4 for both http and RDP:

1.2.3.4 myhost # http://1.2.3.4/ rdp

On 19/01/2023 08:56, Becker Christian wrote:

Hi,

another possible scenario could be to put the following in protocols.cfg (in my example to check for port 82):

[tcp82]
         port 82

In your hosts.cfg, you need to put tcp82 just after the hostname that you want to check (don't forget to include the #) - example:

1.2.3.4        testhost        # tcp82


After a while your testhost should show up an additional column tcp82 (it's the name is as defined in your protocols.cfg).
We are doing that for a lot of hosts.
Hope it'll help you a bit.

Regards
Christian


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Von: Xymon <xymon-bounces at xymon.com> Im Auftrag von Christoph Zechner
Gesendet: Dienstag, 17. Januar 2023 23:30
An: xymon at xymon.com
Betreff: [Xymon] How to test remote ports

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Hi,

I've been trying to establish a remote port check, but cannot get it to work. After reading the man pages and the corresponding topics on the mailing list, I've configured a test like this:

PORT REMOTE=1.2.3.4:80

but the remote port always comes back as down, even though it is up. Am I doing something wrong? Local port checks all work perfectly, only the remote ones do not.

Am I doing something wrong here?

Context: I am using local mode on all clients, so I'm putting all my checks in /etc/xymon/localclient.cfg, but this should not effect this check, right?

Thanks in advance!

Best regards
Christoph Zechner