Arp Preprocessor Patch

[José Diogo via Snort-devel <snort-devel () lists snort org>]

Hi,

This is a patch for the ARP preprocessor to produce more detailed messages regarding the ARP Cache Override Attacks. 
The patch adds the following information to the default message: SHA (Sender Hardware Address), SPA (Sender Protocol 
Address), THA (Target Hardware Address) and TPA (Target Protocol Address) as defined in the ARP protocol message. This 
way, instead of getting a somewhat ambiguous default message (i.e (spp_arpspoof) Attempted ARP cache overwrite attack), 
it produces something like: "(spp_arpspoof) Attempted ARP cache overwrite attack, Mismatch mapping aa:aa:aa:aa:aa:aa 
<-> 172.27.248.1, sha bb:bb:bb:bb:bb:bb, spa 172.27.248.1, tha cc:cc:cc:cc:cc:cc, tpa 172.27.248.213”.

Let me know your feedback

Attachment: spp_arpspoof.c.diff
Description:

Best Regards,
José Monteiro

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