sar interface stats

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On a RHEL5.x86_64 firewall system (one interface internet-exposed, the
other on intranet), totals for received bytes/sec and transmitted
bytes/sec, as reported by 'sar -n DEV', are always nearly equal for
both interfaces.  This despite the fact that for sure the external
interface is kept very busy dropping the usual internet cruft.  Do
interface 'received' statistics as maintained by the kernel NOT
reflect traffic that is DENYed/DROPed/REJECTed by netfilter (iptables)
rules?    Or if it's not the case that the dropped traffic isn't
counted, why the near equality for total traffic on both interfaces?
If traffic that is REJECTed is not counted in the received counts, are
the resets or icmp unreachables also not counted in the transmitted
counts?

thanks,
val
--
To unsubscribe from this list: send the line "unsubscribe netfilter" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux Netfilter Development]     [Linux Kernel Networking Development]     [Netem]     [Berkeley Packet Filter]     [Linux Kernel Development]     [Advanced Routing & Traffice Control]     [Bugtraq]

  Powered by Linux