a432399c56
Security improvements: - Increase the size of each syncookie secret from 32 to 128 bits in order to make brute force attacks on the secrets much more difficult. - Always return the lowest order dword from the MD5 hash; this allows us to expose 2 more bits of the cookie and makes ACK floods which seek to guess the cookie value more difficult. Performance improvements: - Increase the lifetime of each syncookie from 4 seconds to 16 seconds. This increases the usefulness of syncookies during an attack. - From Yahoo!: Reduce the number of calls to MD5Update; this results in a ~17% increase in cookie generation time here. Reviewed by: hsu, jayanth, jlemon, nectar MFC After: 15 seconds |
||
---|---|---|
.. | ||
alpha | ||
amd64 | ||
arm | ||
boot | ||
cam | ||
coda | ||
compat | ||
conf | ||
contrib | ||
crypto | ||
ddb | ||
dev | ||
fs | ||
geom | ||
gnu | ||
i4b | ||
i386 | ||
ia64 | ||
isa | ||
isofs/cd9660 | ||
kern | ||
libkern | ||
modules | ||
net | ||
netatalk | ||
netatm | ||
netgraph | ||
netinet | ||
netinet6 | ||
netipsec | ||
netipx | ||
netkey | ||
netnatm | ||
netncp | ||
netns | ||
netsmb | ||
nfs | ||
nfsclient | ||
nfsserver | ||
opencrypto | ||
pc98 | ||
pccard | ||
pci | ||
posix4 | ||
powerpc | ||
rpc | ||
security | ||
sparc64 | ||
sys | ||
tools | ||
ufs | ||
vm | ||
Makefile |