On 2013年12月06日 02:34, Pablo Neira Ayuso wrote:
Hi,
On Thu, Nov 28, 2013 at 10:53:24AM +0800, Fan Du wrote:
With this plugin, user could specify IPComp tagged with certain
CPI that host not interested will be DROPped or any other action.
For example:
iptables -A INPUT -p 108 -m ipcomp --ipcompspi 0x87 -j DROP
Then input IPComp packet with CPI equates 0x87 will not reach
upper layer anymore.
I think that, with a little bit more work, you can add support for
IPv6 as well. From RFC 3173:
"In the IPv6 context, IPComp is viewed as an end-to-end payload, and
MUST NOT apply to hop-by-hop, routing, and fragmentation extension
headers.
You can perform that IPv6-specific handling to skip these extension
headers and reach the IPComp header by means of the ipv6_find_hdr()
helper function.
BTW, please post the iptables userspace part as well.
Thanks for your attention, Pablo.
I will try to finish your request this weekend, hopefully post the whole
patch set in early next week.
--
浮沉随浪只记今朝笑
--fan fan
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