In the process of setting up some new MQ connections from our Z/OS
mainframe to new mid-range servers. The development team is trying to check
if the connection from Z/OS to the mid range service is working by issuing
a telnet command.

Telnet ip address. 1414

Where they have set 1414 as the port on which they want to run MQ. The
target server has an application firewall in front of it but that source
and that port is open.

When they try the telnet command from the TSO command line  it just times
out. And there is no traffic received on the firewall. They tell me they
are able to telnet to their current development host with no problem. Would
there be some specific Z/OS TCP/IP configuration for the target host IP
address and port that needs to be set up? Nobody seems to know so I'm
hoping this forum can provide some pointers.

But strangely from the mid-range server they can telnet to Z/OS on the port
they have defined for MQ with no problem. In this case they're using 1440.

Thanks

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