I just compiled and installed ntop, when i go to run ntop as root i get an error saying :
Sat Apr 24 02:29:54 2004 ntop will be started as user nobody
Sat Apr 24 02:29:54 2004 ntop v.3.0 SourceForge .tgz MT (SSL)
Sat Apr 24 02:29:54 2004 Configured on Apr 23 2004 22:46:25, built on Apr 23 2004 22:49:32.
Sat Apr 24 02:29:54 2004 Copyright 1998-2004 by Luca Deri <deri@ntop.org>
Sat Apr 24 02:29:54 2004 Get the freshest ntop from http://www.ntop.org/
Sat Apr 24 02:29:54 2004 Initializing ntop
Sat Apr 24 02:29:54 2004 Checking eth0 for additional devices
Sat Apr 24 02:29:54 2004 Resetting traffic statistics for device eth0
Sat Apr 24 02:29:54 2004 DLT: Device 0 [eth0] is 1, mtu 1514, header 14
Sat Apr 24 02:29:54 2004 Initializing gdbm databases
Sat Apr 24 02:29:54 2004 Now running as requested user 'nobody' (65534:65534)
Sat Apr 24 02:29:54 2004 **FATAL_ERROR** ....open of /usr/local/var/ntop/prefsCache.db failed: File open error
Sat Apr 24 02:29:54 2004 1. Is another instance of ntop running?
Sat Apr 24 02:29:54 2004 2. Make sure that the use you specified can write in the target directory
Is there any good sites that shows how to configure ntop or can someone help me setup ntop so i can get it running correctly? i cant seem to find any good documentation on ntop to set it up.


Thanks,
Garrett

AFAIK there are two things that cause this error:
1) ntop is already running as stated - check with:
ps -ef | grep ntop
2) The permissions on /usr/local/var/ntop/* are not readable/writeable by "nobody":
chown -R nobody /usr/local/var/ntop
chmod -R o+rw /usr/local/var/ntop

Thanks ill have to check it out, i really want to get ntop running so i can monitor my network and keep track of what is using what kind of bandwidth.


Garrett