https://public.dhe.ibm.com/software/data/sample/GSDB_DB2_LUW_ZOS_v2r3.zip
The old ftp site is now only accessible via https, just replace
"ftp.software.ibm.com" with "public.dhe.ibm.com". The remainder of the
URLs seem to remain the same.
If you just go to https://public.dhe.ibm.com it is not viewable, but if
you know the first directory under it, you can then view directory
contents. For example, your file was under "/software/". Here are some
others that work:
/ps/ personal systems, PC related stuff
/systems/
/hardware/
scot