measure traffic

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this is slightly off topic, but i'm asking anyway :)

when taking a look at the byte counters with ifconfig, i get the following
results:

eth0      Link encap:Ethernet  HWaddr 00:60:08:6B:A2:FE
          UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
          RX packets:16181723 errors:4 dropped:0 overruns:0 frame:0
          TX packets:17970946 errors:0 dropped:0 overruns:0 carrier:0
          collisions:581668 txqueuelen:100
          RX bytes:3686193757 (3515.4 Mb)  TX bytes:1361276683 (1298.2 Mb)
          Interrupt:11 Base address:0x6000

intech007:~ # ifconfig eth1
eth1      Link encap:Ethernet  HWaddr 00:60:08:6B:A2:1A
          UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
          RX packets:18559613 errors:0 dropped:0 overruns:0 frame:0
          TX packets:16380728 errors:0 dropped:0 overruns:0 carrier:388
          collisions:184706 txqueuelen:100
          RX bytes:2205111742 (2102.9 Mb)  TX bytes:3719071392 (3546.7 Mb)
          Interrupt:9 Base address:0x6100

This machine is a bridging transparant firewall. eth1 is internet side, and
eth0 is lan side. 

Is it correct to assume, that the firewall rules in use reduced the incoming
traffic from 2102.9 MB to 1298.2 MB?

Isn't that too big a reduction..? Am i making a thinking error here..?

Thanks for any replies.

Yours,
Mourik Jan



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