# CBWFQ not supported on Sub-Interfaces

**URL:** <https://forum.networklessons.com/t/cbwfq-not-supported-on-sub-interfaces/1023>\
**Category:** Lessons Discussion\
**Created:** [December 26, 2016, 6:17pm UTC](https://forum.networklessons.com/t/cbwfq-not-supported-on-sub-interfaces/1023 "2016-12-26T18:17:06Z")\
**Posts on this page:** 1\
**Showing post:** 6

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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:** [September 11, 2014, 10:55am UTC](https://forum.networklessons.com/t/cbwfq-not-supported-on-sub-interfaces/1023/6 "2014-09-11T10:55:41Z")

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Hi BJ,

You can use NBAR to block HTTP but not HTTPS, here’s why:

> **[Block website with NBAR on Cisco Router](https://networklessons.com/quality-of-service/block-website-with-nbar-on-cisco-router)**
>
> NBAR can be used on Cisco IOS routers to block certain websites. This lesson explains the configuration and verification.

I have quite some switching tutorials but I’m going to add more, take a look here:

> **[Switching - NetworkLessons.com](https://networklessons.com/switching)**
>
> This networklessons.com course covers all basic and advanced switching topics on Cisco IOS Catalyst switches.

Rene

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