MikroTik

hello MT gurus

I have a server running redhat 9 with a 3rd party software running on it. When I run the 3rd party software locally on the server it works fine. There is a setup for a remote pc or client pc to access the software on the server. When I run the program on the client pc or the remote pc I get a error message about "can not communite with server". The server have all firewall on redhat disabled. I can ping and SSH into the server fine. The server and client are all on the same network.

The documentation for the 3rd party software requires these ports to be open

1098- (JBoss RMI port) 1099-(JBoss RMI port)
4444- (JBoss RMI Object port) 3306- (MySQL DB port)

I opened the ports by implimenting these firewall rules. and moved the rules to the top.

add chain=forward dst-port=1098-1099 protocol=tcp action=accept
add chain=forward dst-port=4444 protocol=tcp action=accept
add chain=forward dst-port=3306 protocol=tcp action=accept

unfortunately I still get the error message and can not communicate with the server. Please if anyone can help I will really appreciate it.

Thank you in advance
Ben

Is it possible you need to open the ports up for the src-port as well? The server may be sending reponses from those ports and getting blocked.

~ Jason

If you've got a Mikrotik Router between your connection and the RedHat server and the router is running NAT, then you need a destination NAT rule (dst-nat in the firewall) for each port specifying the destination port and action=nat with the rule "nat to" and the port to send it to.

Thank you Jason and Riker I will try both ways and see. I really appreate your help.

Thank you