After many trial and errors, finally i’d given up installing Tripwire suggested by LinuxPilot. Why?
It’s because no RPM is available for RHEL3 x86_64 and unfortunately the compilation of source code required the change of Makefile’s SYSPRE, don’t know how to change it suitable for x86_64 from i686-pc-linux.
Then finally it’s a happy ending to use AIDE (Advanced Intrusion Detection Environment) as a substitute for Tripwire. The RPM for RHEL3 x86_64 is actually available from sourceforge.net.