Thank you very much for your suggestions. 1) My goal is to store the traffic may be fore ever, and analyze it in the future for security related incidents detected by ids/ips. 2) I am storing just header and initial few bytes but still it gets filled up quite quickly. 3) Netflow approach is nice but I also want to have traces available for reasons mentioned in 1). 4) Are there any issues having an external storage as a solution for this problem. Best, Ali On Thu, Apr 12, 2012 at 5:06 PM, Michael J McCafferty <mike@m5computersecurity.com> wrote:
Ali, Do you need to capture the whole packet, including the payload? You will save a lot of space by just capturing the headers. For example, tcpdump doesn't capture the whole packet by default anyway. You may not be able to capture at line rate anyway depending on what you are using to capture with (drivers, libraries, software, etc). See the -s option in tcpdump man page for info.
Good luck, Mike
On Thu, 2012-04-12 at 16:25 -0400, Maverick wrote:
Hello Everyone,
Can you please comment on what is best solution for storing network traffic. We have been graciously granted access by our network administrator to capture traffic but the one Tera byte disk space is no match with the data that we are seeing, so it fills up quickly. We can't get additional space on the server itself so I am looking for some external solutions. Can you please suggest something that would be best for Gbps speeds .
Best, Ali
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