# Extended Access-List Established

**URL:** <https://forum.networklessons.com/t/extended-access-list-established/14677>\
**Category:** Lessons Discussion\
**Created:** [June 16, 2021, 1:09pm UTC](https://forum.networklessons.com/t/extended-access-list-established/14677 "2021-06-16T13:09:50Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ReneMolenaar](https://cdn-forum.networklessons.com/user_avatar/forum.networklessons.com/renemolenaar/32/488_2.png) [@ReneMolenaar](https://forum.networklessons.com/u/ReneMolenaar)\
**Post date:** [June 16, 2021, 1:09pm UTC](https://forum.networklessons.com/t/extended-access-list-established/14677/1 "2021-06-16T13:09:51Z")

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This topic is to discuss the following lesson:

> **[Extended Access-List Established](https://networklessons.com/security/extended-access-list-established)**
>
> This lesson explains how the Cisco IOS access-list established parameters checks the ACK and RST flag for established connections.

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**Author:** ![bthethy](https://cdn-forum.networklessons.com/letter_avatar_proxy/v4/letter/b/7ea924/32.png) [@bthethy](https://forum.networklessons.com/u/bthethy)\
**Post date:** [January 17, 2024, 8:20am UTC](https://forum.networklessons.com/t/extended-access-list-established/14677/2 "2024-01-17T08:20:43Z")

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Great lesson thank you.