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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/usb/ems_usb.c | |
parent | c8e000604bce02a87742240a9b716a0f1b680c0b (diff) | |
download | op-kernel-dev-d218d11133d888f9745802146a50255a4781d37a.zip op-kernel-dev-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/usb/ems_usb.c')
0 files changed, 0 insertions, 0 deletions