TCP Attacks Flashcards by m. Han

Q

Advantages for TCP SYN Cookies (3)

A

Server does not need to allocate resources after the first SYN packet.
Client does not need to be aware that the server is using SYN cookies
SYN cookies don’t requires changes in the specification of the TCP protocol.

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Q

Disadvantages of TCP SYN Cookies

A

Calculating a may be CPU consuming
TCP options cannot be regularly negotiated using cookies, in all implementations
ACK/SEQ number are only 32 Bit long
Efficient implementation may be vulnerable to cryptoanalysis after receiving a sufficient number of cookies.

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