Monitoring connection from Zabbix Agent to external server

[duyth4]

Hello all, I am new to Zabbix and I have a problem like below :

I have installed an Zabbix Server, let's call it Server A
A Window Server 2016 PC, which have installed Zabbix Agent, we call it Agent B
An external server, which we cant install or do anything about it, named Server C.
Server A can connect and monitor Agent B as usual, but cannot connect to server C.
Agent B is running an app which establish a TCP connection to server C through a specific port.

The question is : Can I monitor the connection from Agent B to server C using simple check like "net.tcp.service" ?
If not, are there any possible solution ?

Sorry for my bad English but thank you all for your concern and hope you all are well and healthy during these unsettling times.

[c1support]

Are you able (i.e. allowed to) to install a Zabbix Proxy on Server B (maybe inside a Hyper-V Virtual Machine, possibly based on Zabbix Appliance)?

https://www.zabbix.com/documentation/current/manual/concepts/proxy

https://www.zabbix.com/documentation/current/manual/appliance

See also https://en.wikipedia.org/wiki/Zabbix => High level architecture in chapter "Features"

[Hamardaban]

Another clever way https://share.zabbix.com/operating-s...-windows-agent

[c1support]

Another clever way https://share.zabbix.com/operating-s...-windows-agent

Sounds really interesting, particularly if you are certain that the target is not moving (i.e. scope will remain restricted to ping-monitoring only). Thanks for sharing!

[Hamardaban]

To duytha4
What is the problem with using the standard net.tcp.service[service,<ip>,<port>] (or net.tcp.service.perf) in your case??
Try net. tcp. service[tcp,<server_c_ip>,<server_c_tcpport>]

[Semiadmin]

There are simple check key net.tcp.service and agent check with the same key. In this case, you need an agent check.

[duyth4]

Thanks everyone for help I am nearly done for my monitoring server.
But now I have a question is : "Does net.tcp.service is a telnet check ?"
Because I have a huge amount of host and I really dont want it to telnet to my server at the same time.

[Hamardaban]

https://www.zabbix.com/documentation/current/manual/appendix/items/service_check_details

[duyth4]

So basically it will create a connection session to my server. Will it closed immediately after success check or it will stay there forever ?

[Hamardaban]

Closed.
Perhaps you should study the operation of this TCP/IP protocols in more detail?

[Aminam]

Hello!
do you find a solution at last?
does these suggestions work?
i'm having your problem unfortunately !