____________________
Output:

Trying 192.168.x.x ...
Connected to 192.168.x.x
Escape character...
Connection closed by foreing host.
___________________

But. when I edit in nxagent.conf and set:
MasterServers=192.168.x.x.
Save and Start again, it automatically returns the IP address 127.0.0.1 in the web  management console.

The agent is active when the address is 127.0.0.1. but there is no communication with the nodes, when I change the server address to 192.168.x.x then I get an error. (Cannot connect - Internal error)

(agent status: unreachable, return IP address on 127.0.0.1)

When I manually set the agent's ip address to 192.168.x.x, the agent is active, but it is set automatically:

PrimaryHost Name=127.0.0.1
Primary IP= 192.168.x.x
and I get a message (internal error) - NATIVE AGENT IS NOT RESPONDING

----------------------------------------------------------------------------

Should I perhaps set up a situation like this:
nxagentd.conf (edit)

MasterServers=127.0.0.1/8,192.168.x.x
It is currently:
MasterServers=192.168.x.x

I don't know what to do anymore....???

telnet ip_addess 4700

where ip_address is the address of your agent. 
What output would this command produce?

I tried turning off the firewall, same thing again...

I set everything except the firewall, how do I turn off the firewall, btw (Netxms 4.1.420 on Linux Ubuntu)?

Thanks, regards.

So here's a few prerequisites for server to connect to the agent:

• agent process should be running
• no firewall should be blocking agent's port (it's TCP port 4700)
• In nxagentd.conf configuration file MasterServers parameter should include IP address of your NetXMS server