:orphan:

.. title:: CONFIG_NET_TCP_ISN_RFC6528

.. kconfig:: CONFIG_NET_TCP_ISN_RFC6528

CONFIG_NET_TCP_ISN_RFC6528
##########################

*Use ISN algorithm from RFC 6528*

Type: ``bool``

Help
====

.. code-block:: none

    Implement Initial Sequence Number calculation as described in
    RFC 6528 chapter 3. https://tools.ietf.org/html/rfc6528
    If this is not set, then sys_rand32_get() is used for ISN value.

Direct dependencies
===================

\ :kconfig:`NET_TCP <CONFIG_NET_TCP>` && !\ :kconfig:`NET_RAW_MODE <CONFIG_NET_RAW_MODE>` && \ :kconfig:`NETWORKING <CONFIG_NETWORKING>`

*(Includes any dependencies from ifs and menus.)*

Default
=======

- y

Symbols selected by this symbol
===============================

- \ :kconfig:`MBEDTLS <CONFIG_MBEDTLS>`
- \ :kconfig:`MBEDTLS_MD <CONFIG_MBEDTLS_MD>`
- \ :kconfig:`MBEDTLS_MAC_MD5_ENABLED <CONFIG_MBEDTLS_MAC_MD5_ENABLED>`

Kconfig definition
==================



At ``<Zephyr Subsystem>/net/ip/Kconfig:457``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:44`` → ``<Zephyr Subsystem>/Kconfig:39`` → ``<Zephyr Subsystem>/net/Kconfig:87``

Menu path: (Top) → Sub Systems and OS Services → Networking → Link layer and IP networking support → IP stack

.. code-block:: kconfig

    config NET_TCP_ISN_RFC6528
    	bool "Use ISN algorithm from RFC 6528"
    	default y
    	select MBEDTLS
    	select MBEDTLS_MD
    	select MBEDTLS_MAC_MD5_ENABLED
    	depends on NET_TCP && !NET_RAW_MODE && NETWORKING
    	help
    	  Implement Initial Sequence Number calculation as described in
    	  RFC 6528 chapter 3. https://tools.ietf.org/html/rfc6528
    	  If this is not set, then sys_rand32_get() is used for ISN value.

*(The 'depends on' condition includes propagated dependencies from ifs and menus.)*