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  2. MIDRANGE-L
  3. December 2019

Strange TCP errors on a customer box

Ladies and Gentlemen:

We have a customer. TCP is clearly up, as I'm able to Telnet into it, and I am able to connect to our CRM product on their system, using its traditional Java client.

But if I do a WRKTCPSTS on it, I get:

wrktcpsts Product 5770SS1, option 0003 not installed. Function check. TCP458B unmonitored by QTONSTAT at statement *N,
instruction X'0029'. Problem log updated. Internal system error in program QTONSTAT.

Further, we have a Tomcat-based webapp that provides a web interface to the aforementioned CRM product, and if *it* tries to connect, via the Loopback address, to the same server (and the same port) that I'm able to connect to, it fails, with
java.net.ConnectException: A remote host refused an attempted connect operation. (Connection refused)

Can anybody shed any light on this? Are the two observed phenomena linked in any way?

--
JHHL

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