Tech Tip: How do I find the client's IP address that's connected to Reality?
There are several ways of finding this information. Reality's DataBasic SYSTEM(49) function will return this information
CRT SYSTEM(49) might return
INET-127.0.0.1-023 where INET indicates a telnet connection, 127.0.0.1 - the clients IP address and 023 the port its connecting to.
Or you can use the "PLID" verb from SYSMAN account or indeed read the USER.LOG record for the port you are interested in and you will find it on attribute 3.