As Bloomberg News put it today in a story about Alpha, some mines must die for others to live. And some companies will also die. CONSOL Energy Inc. (NYSE: CNX) is the largest coal producer by market cap, but its survival plan is based on becoming a natural gas producer.So far that has been only a partial success because natural gas prices are so low.nd some companies will also die. CONSOL Energy Inc. (NYSE: CNX) is the largest coal producer by market cap, but its survival plan is based on becoming a natural gas producer. So far that has been only a partial success because natural gas prices are so low.
From the server-side firewall's standpoint, to support passive mode FTP the following communication channels need to be opened: 1  FTP server's port 21 from anywhere (Client initiates connection)  FTP server's port 21 to ports > 1023 (Server responds to client's control port)
How to Connect Over FTP Port 21. If FTP is not working, the correct ports may not be open on the network. This can take place on either the server side or the client side. Any software that blocks the ports must be manually changed to open them, including routers and firewalls. By default, routers and firewalls might not accept connections on port 21. If FTP isn't working, it's best to first check that the router is properly forwarding requests on that port and that the firewall isn't blocking port 21. Tip: You can use Port Checker to scan your network to see if the router has port 21 open.