Le 21 oct. 06 à 16:19, Michael P. Soulier a écrit :
Hey people,
I'd like something to look at traffic use through my gateway, so I
know how
much of my upload bandwidth and download bandwidth is in use at any
time.
This could be donne very easily withe cacti :
--> Activate SNMP on your gateway
--> Log into cacti
--> Select Devices and create a new one corresponding to your gateway
--> Select a Host Template of type ucd/net SNMP host
--> Add graph template
--> Add data query of type "SNMP - interface statistics"
This should be very easy.
For security purpose reduce the IP range of allowed hosts in the
snmpd.conf
Ideally it'll tell me from where, so I can look at internal
abusers, or get an
idea of where hits are coming from.
If your PC's are connected to a switch, activate SNMP and monitor It
the same way.
Otherwise you'll have to go into deeper configuration of cacti and
script the solution to monitor load per IP.
Another solution would be to Monitor global bandwith and log into
your gateway once you encounter congestion and have a little command
like that showing whom the nasty guys are :
# netstat -an | less
If your gateway is not a FreeBSD - let us know because things could
be very different.
Off the top of my head, I can think of two tools.
1. ntop - great web interface, but I've found it unstable
2. iptraf - good curses interface, but I'm looking for trend
monitoring
3. mrtg - as I'm running snmp, so I could just monitor it from a
desktop
running mrtg...
Any other suggestions?
Thanks,
Mike
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bsd @at@ todoo.biz
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