misc/119226: how to analyze or tracking attack on my server to get the source IP.

[saria]

>Number:         119226
>Category:       misc
>Synopsis:       how to analyze or tracking attack on my server to get the source IP.
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          change-request
>Submitter-Id:   current-users
>Arrival-Date:   Tue Jan 01 11:40:02 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     saria
>Release:        6.2
>Organization:
Gov
>Environment:
>Description:
our server is slow in response and the CPU utilization is high...we do not know is an attack or flooded network.
can U help me with the ways or techniques that will help me to:
1- Identify it is it an attack or normal traffic.
2- track it or trace it to get the source IP if it is an attack.


My regards.
>How-To-Repeat:

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: