The way this is usually done, regardless of the “capabilities” available,
is to just forward a port. You can do this simply with the SUSE Firewall
using the FW_REDIRECT configuration option under
/etc/sysconfig/SuSEfirewall2 and this allows your applications o remain
unaltered, your users to access them over standard ports, and keeps
applications from ever needing to bind low ports for listening. This also
encourages good firewall behavior (as in, have it enabled) since the
option does not work without the firewall at least being enabled.
I presume this still works in 12; it’s worked for years in earlier major
releases.
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Good luck.
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