[LUG] Bandwidth monitoring

[Jonathan Melhuish <lists@xxxxxxxxxxxxxxxx>]

I'm thinking of setting up a public wi-fi hotspot, probably by plugging 
a network bridge into a second network card on my server, then suitably 
configuring routing on that box to forward only out to the Internet 
router and selected services on my server.

It'd be nice to have some kind of usage monitoring, just to see if 
anybody actually uses it and how much of our bandwidth they're using.  
MTRG looks cool, but it seems to be centred around grabbing stats off 
SNMP-compatible routers.  Can I config it to monitor activity on the 
local network connections instead?

Also, the only thing I don't really want it used for is sending spam.  I 
know it's probably not that big a deal, but presumably rate-limiting the 
outgoing mail is going to involve setting up my own mail server and 
configuring it to forward mail out to our ISP's SMTP server?

Also, (whilst I'm at it!) I saw somebody had configured their hotspot so 
that the first page served through the network was a "welcome" page 
detailing services available, regardless of what was requested.

Somebody really ought to make a "wifi-hotspot" Debian superpackage that 
installs everything you need for a fully featured, secure public hotspot 
and has a nice easy debconf-based installation.  Maybe I ought to have a 
look into creating some packages... I wouldn't know where to start.

Anyway, enough of the rambling (sorry)!

Cheers,

Jon


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