Folow the following two steps as root..
1) Add the following line to /etc/ld.so.conf file:
Most probably additional libraries you install reside in this directory. If not, this is the directory where libdnet.so or something like this resides.
/etc/ld.so.conf specifies non-standard locations which the dynamic linker will look for libraries.
2) Run ldconfig program.
This will update some caches...
Now, try rerunning your appliation, I hope it works now.
And let me know what output you get as this is as far I seem to have got while running Firewalk....
You can email me also at
sonianamikasoni@rediffmail.com