The "state" field of ra output

Andrew Pollock andrew-argus at andrew.net.au
Mon Oct 21 22:30:03 EDT 2002


Greetings,

I'm investigating some monthly totals for a particular IP address that are 
significantly higher than anticipated, by running ra over the same data 
and just having a bit of a squiz at what it says happened.

I'm seeing lots of SSH connections from one of our monitoring hosts, which
is expected, however the State column has RST, which according to the 
manpage examples for ra() implies that the connections were denied. I know 
for a fact that the connections aren't being denied, because my monitoring 
would be saying inbound SSH to this IP was unavailable if it was.

I'm wondering if the monitoring check isn't closing the SSH connection
cleanly, and it's issuing a reset. I haven't yet done some analysis with 
tcpdump to verify this.

I'm wondering how you can determine which side of the connection issued 
the reset, and if my theory above holds water, this changes the 
interpretation of the ra output somewhat, doesn't it?

Andrew



More information about the argus mailing list