Monitoring if tcp 3389 is up

[Bdolnik]

I have the same issue with the SQL port 1433.
After intensive search I found the solution. By default Zabbix server blocks all the ports except some (22,80,433). To change the behavior in RH8 you need to grant it permission to the can_network by doing following:
setsebool -P zabbix_can_network on
Works like a charm after this !
I also tried simple check on port 3389 (RDP) - works as well

[markuman]

<key>net.tcp.service[tcp,,3389]</key>​

That works for me. However, I've noticed that the zabbix-server itself performs the check and not the zabbix agent 2 on the related windows host.

[cyber]

<key>net.tcp.service[tcp,,3389]</key>​

That works for me. However, I've noticed that the zabbix-server itself performs the check and not the zabbix agent 2 on the related windows host.

It depends, what you have set as item type. "Simple check" or "Zabbix agent" . With simple check server/proxy will perform the check. This can sometimes be confusing, if same built-in key can be used differently.

[LenR]

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...

net.tcp.service will always return 0 or 1. If it's not retuning anything, ensure that the polling config has had time to update. However, if it's 0 (not listening) it just means the Zabbix server can't connect, you're right, it could be blocked from Zabbix, but allowed elsewhere. Don't be lulled into a false sense of goodness :-)

[georgeMyName]

Hi, I am in simmilar trouble. Change from Simple check to Zabbix agent helps for me. I am monitoring iis by agent.

[aletzonsantiago]

rdp is not in service list

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]

This works for me. Thanks!