How to check if a port is open or not
Posted on 2009-07-13
I am a new administrator of a webserver that resides outside our cooperate firewall on the DMZ. I have asked the network admin to open ports 9998, 9999 and 1433 (for the NetIQ agent) to/from the external webservers to our two NETIQ servers. He is telling me that the ports are open, but the agent is not working. I not 100 percent sure that he successfully opened the ports but do not have the access to the firewall to double check. In the mean time, he insists that they are open. How can I prove or disprove that this ports are indeed open or not.