Monitoring if tcp 3389 is up

[[email protected]]

Can i monitoring RDP port without agent installation on the target?
i want use simple check
Ssh works fine but 3389 command is not recognize
I ll expect a value=0 but it s grey

[Singularity]

It is because net.tcp.listen does not falls in simple checks. It requires communication with zabbix-agent.
Here is the list of simple checks : https://www.zabbix.com/documentation.../simple_checks

[dimir]

The correct simple check key would be

net.tcp.listen[,,3389]

[Hamardaban]

net.tcp.listen[port]

- not simple check, but agent.

for rdp test you tray use net.tcp.service[tcp,,3389]

[dimir]

Sorry, I meant, for simple check use

net.tcp.service[,,3389]

[enik9123]

Hello

I have problem like this: Atachment



I just want to check if rdp connection is possible - I have a problem with that

I don't know where this problem comes from: Invalid first parameter


I have tried various entries:

net.tcp.port[rdp]
net.tcp.port[,3389]
net.tcp.listen[,,3389]


at some point he showed up another error:

unsupported items


What am I doing wrong ?

[Atsushi]

Hi enik9123,
If you use net.tcp.service[] with a simple check, the first argument is the protocol name. Not a port number.

https://www.zabbix.com/documentation/5.0/en/manual/config/items/itemtypes/simple_checks

And, I don't think the following item keys were in the simple check.

net.tcp.port[rdp]
net.tcp.port[,3389]
net.tcp.listen[,,3389]

If you want to use the simple check, as dimir wrote above, shouldn't you use the following item keys?

net.tcp.service[,,3389]

[enik9123]

Hi Atsushi

I use net.tcp.service[,,3389] but i have still the same problem:

[enik9123]

Now, i have error:

Unsupporeted key item

[cyber]

rdp is not in service list

service - possible values: ssh, ldap, smtp, ftp, http, pop, nntp, imap, tcp, https, telnet

Closest you can do probably is specifying "tcp".
net.tcp.service[tcp,,3389]
Just in case you can specify IP there also. net.tcp.service[tcp,<insert your IP here>,3389]

[enik9123]

unfortunately it still did not work

I wonder if I do not need to add configuration in the agent (windows agent)?

[Atsushi]

It has been confirmed that the value can be obtained if the item key is written by cyber. (net.tcp.service[tcp,,3389])
Simple check does the check directly from Zabbix server, so Zabbix agent settings are irrelevant.

[enik9123]

Atsushi - rdp is not in service list in simple check

service - possible values: ssh, ldap, smtp, ftp, http, pop, nntp, imap, tcp, https, telnet


(net.tcp.service[tcp,,3389]) - doesnt work

[Atsushi]

So I specify tcp as a service. I haven't specified rdp because it's not supported. In the Zabbix 6.0 environment I have, I can get the value.

[cyber]

If simple check from server/proxy towards a host does not return anything, maybe you have some FW rules in place, which just do not allow you to connect to that port...