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ASA V7.2 Initial Sequence Number (ISN) Randomization

h.schwob
Level 1
Level 1

Problem: We try to configure Initial Sequence Number (ISN) Randomization

but we see varying information on CCO websites about its operation.

.

Details:

"I'm trying to determine the answer to the question: Do Cisco ASAs

randomise TCP Sequence Numbers between same security level interfaces

when using the Static command to do Static NAT?

Many thanks for your help

Regards , Hubert.

1 Reply 1

sebastan_bach
Level 4
Level 4

i guess the isn randomisation is only for dynamic nat translations and not for static nats.

regards

sebastan

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