IPacc v0.1
Using IP accounting kernel rules to feed mrtg.

1. Abstract
 I am using the old ipfwadm style for doing this for backwards compatibility,
and because it's enough for my purpose.
 For those who have kernels higher than 2.0 (using IPchains), like 2.1 or 2.2.
I have included the ipfwadm-wrapper by Paul Russel.
So if you if you are running on 2.2 (like me), you should copy this to 
/sbin/ipfwadm.
It's a little slow, but it's done with sh.

 With this script you may generate trafic grahs for any IP, any networks or subnetworks.
 I haven't done support for icmp prot.

2. Syntax

 You use the exact sintax as with ipfwadm 
 ipacc [mode] [-S source_ip/net_bits [port1 port2 ...]] [-D dest_ip/net_bits [port1 port 2 ...]]

where:
  mode - is either "in" or "out", if you don't specify any there will be 
	included 2 rules in this fashion:
   in -S source_ip/net_bits sport1 sport2 -D dest_ip/net_bits port1 port2
   out -S dest_ip/net_bits dport1 dport2 -D source_ip/net_bits sport1 sprot2

source_ip & dest_ip - are the dotted ip address of the source and the 
			destination (IP address not hosts)
net_bits - are number of bits used by the network+subnetwork if any
	(that is 24 for a whole class C or 25 for half a C class ...)
	you don't have to specify any if you are doing it for a host
portN - the ports where the packet it comming from and is going to


3. The printings

  If you are using one way
   ipacc will print 
	inbytes, 0, uptime, server_name  for an "in" mode rule
    or
        0, outbytes, uptime, server_name  for an "out" mode rule
    for both ways (in - out)
     it will print
         inbytes, outbytes, uptime, server_name

inbytes, outbytes - the numbers read from the ipfwadm command
uptime - is what the uptime command will print
server_name - is what you'll write at the server name in the script

So you will add something like

Target[ipaddr]: `ipacc arguments`


Cristian Caramida   <brick@bbs.ro>
		and soon <brick@pcnet.ro>

4. End