RST cookies turned out a bad idea, thats why they vanish in 2.0.34. Syn
cookies use Dan Bernsteins scheme to encode a secure cookie in the
SYN|ACK frame effectively forcing the handshaking state into the connection
requestor and being statistically safe.
> What OS' and other products to they interoperate with?
All
> Is T/TCP (RFC1644) implemented in the Linux kernel?
> Is there any relationship between T/TCP and Linux' Syn and RST cookies?
Nope. T/TCP is an experimental and rather dead hack which the RFC explicitly
says should not be implemented as a standard item.
Alan
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