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author | Stephen Hemminger <shemminger@vyatta.com> | 2010-01-11 16:28:01 -0800 |
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committer | David S. Miller <davem@davemloft.net> | 2010-01-11 16:28:01 -0800 |
commit | d218d11133d888f9745802146a50255a4781d37a (patch) | |
tree | 3b4b163238e19c48f37f3d8a77eb27f3a18691a0 /drivers/net/can | |
parent | c8e000604bce02a87742240a9b716a0f1b680c0b (diff) | |
download | linux-d218d11133d888f9745802146a50255a4781d37a.tar.gz |
tcp: Generalized TTL Security Mechanism
This patch adds the kernel portions needed to implement RFC 5082 Generalized TTL Security Mechanism (GTSM). It is a lightweight security measure against forged packets causing DoS attacks (for BGP). This is already implemented the same way in BSD kernels. For the necessary Quagga patch http://www.gossamer-threads.com/lists/quagga/dev/17389 Description from Cisco http://www.cisco.com/en/US/docs/ios/12_3t/12_3t7/feature/guide/gt_btsh.html It does add one byte to each socket structure, but I did a little rearrangement to reuse a hole (on 64 bit), but it does grow the structure on 32 bit This should be documented on ip(4) man page and the Glibc in.h file also needs update. IPV6_MINHOPLIMIT should also be added (although BSD doesn't support that). Only TCP is supported, but could also be added to UDP, DCCP, SCTP if desired. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/can')
0 files changed, 0 insertions, 0 deletions