To enable transparent FTP tunneling, the SOCKS setting in the FTP
application needs to be pointed to a localhost listener.
If you are running a real SOCKS proxy on your z/OS system and the localhost
port 1080 is already reserved, you can add a second loopback address to your
TCPIP profile for the transparent FTP tunneling proxy.
To add the secondary IP address, edit the
TCPIP profile on your
z/OS system. Under the
HOME heading, add the following line:
Make it the second IP address, or put it lower down, because the first
address is the machine's default IP address. Follow the procedure shown in
ZOS TCPIP Setup. Check that the address is there with the following TSO