Syncookies: Difference between revisions
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** This is only true for machines expected to suffer SYNflood attacks. | ** This is only true for machines expected to suffer SYNflood attacks. | ||
** The [[TCP|usefulness of TCP Large Window Extensions]] means I disable SYNcookies on internal machines | ** The [[TCP|usefulness of TCP Large Window Extensions]] means I disable SYNcookies on internal machines | ||
*** Linux 2.6.26 added support for encoding some options into timestamps | |||
==Other Issues== | |||
* Only eight distinct [[TCP|MSS]] values can be chosen, due to only three bits for MSS in the 32 bits of a SYNcookie | |||
==Other Mitigations for SYNfloods== | |||
* SYNproxying by a powerful intermediary | |||