I currently make use of a NETGEAR FVS338 firewall and a NETGEAR 24 port switch. Is there a way to graphically or in some way monitor their traffic?
Edit: Switch Model FS726T
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The FVS338 firewall has SNMP v1 and v2c support according to the Netgear documentation on it (listed under Management Features).
The FS726T switch also supports SNMP v1 according to it's documentation (listed under Administrative Switch Management).
Therefore, any number of free or paid NMS systems could give you the graphical information you're looking for.
For a small setup like this, I'd recommend something along the lines of CactiEZ for graphing your data gathered via SNMP.
Now as a note, SNMP v1 is not a secure way to monitor/maintain your network equipment. Where possible, (it is not in this case) I recommend using SNMP v3. There are several authentication and encryption enhancements in v3 that are well worth implementing to secure your network management setup. You don't have that ability to do so on this gear, because sometimes the lack of newer/more secure features is what you trade off for lower price.
Have a look at NTOP I used this in smaller enterprise deployments to find and identify possible flow anomalies.
ntopng ntopng, the next generation version of the original ntop, a network traffic probe that shows the network usage, similar to what the popular top Unix command does. ntopng is based on libpcap and it has been written in a portable way in order to virtually run on every Unix platform, MacOSX and on Win32 as well.
What ntopng can do for me?
There is also mrtg (http://oss.oetiker.ch/mrtg/), multi platform and free.
to setup SNMPd on the firewall, have a look at page 154 and further of this manual http://www.downloads.netgear.com/files/FVS338_RM_28Jan2010.pdf
Some proprietary stuff I have used in the past,
Solarwinds.com - good for SNMP stuff and network services monitoring. not cheap.
Does the Netgear support netflow? If so there are several good netflow graphing tools out there.
I currently work for this company, so shameless plug. http://turbosoftnetworks.com/blog/78-video-real-time-traffic-monitoring