[Bro-Dev] [JIRA] (BIT-815) IPv6 atomic fragment optimizations
Jon Siwek (JIRA)
jira at bro-tracker.atlassian.net
Tue Mar 17 07:57:00 PDT 2015
[ https://bro-tracker.atlassian.net/browse/BIT-815?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jon Siwek updated BIT-815:
--------------------------
Fix Version/s: (was: 2.4)
2.5
> IPv6 atomic fragment optimizations
> ----------------------------------
>
> Key: BIT-815
> URL: https://bro-tracker.atlassian.net/browse/BIT-815
> Project: Bro Issue Tracker
> Issue Type: Problem
> Components: Bro
> Affects Versions: git/master
> Reporter: Jon Siwek
> Labels: ipv6
> Fix For: 2.5
>
> Attachments: ipv6-nested-atomic-frags.pcap
>
>
> The draft at http://tools.ietf.org/html/draft-ietf-6man-ipv6-atomic-fragments-00 should be revisited if it gets published. According to section 3, atomic fragment headers can just be ignored and "reassembly" skipped. That also should improve the case where a packet has multiple atomic fragment headers (see attached pcap), because currently Bro doesn't recursively reassemble the inner atomic fragments, it just stops processing the packet and gives the "unknown_protocol_44" weird to indicate there was packet with multiple fragment headers.
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