# Errors configuring transparent proxy on Mac OS (It doesn't work!)

**URL:** <https://discourse.mitmproxy.org/t/errors-configuring-transparent-proxy-on-mac-os-it-doesnt-work/1548>\
**Category:** help\
**Created:** [May 23, 2019, 2:16pm UTC](https://discourse.mitmproxy.org/t/errors-configuring-transparent-proxy-on-mac-os-it-doesnt-work/1548 "2019-05-23T14:16:52Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![ConfusedVorlon](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.mitmproxy.org/confusedvorlon/32/430_2.png) [@ConfusedVorlon](https://discourse.mitmproxy.org/u/ConfusedVorlon)\
**Post date:** [May 23, 2019, 2:16pm UTC](https://discourse.mitmproxy.org/t/errors-configuring-transparent-proxy-on-mac-os-it-doesnt-work/1548/1 "2019-05-23T14:16:52Z")

</div>

I’m trying to set up a transparent proxy on Mac OS to intercept secure websocket traffic on port 3001.  
I can’t use a regular proxy as iOS doesn’t respect proxy settings for the websocket traffic

I have followed the docs here:  
[https://docs.mitmproxy.org/stable/howto-transparent/](https://docs.mitmproxy.org/stable/howto-transparent/)

It doesn’t work, and I have identified two possible issues. I don’t know how to fix either of them.

Issue1. According to the instructions, editing the sudoers file will allow any user to run `/sbin/pfctl -s state`

however running this gives the error  
`pfctl: /dev/pf: Permission denied`

Issue2. Possible error when running `sudo pfctl -f pf.conf`

```auto
pfctl: Use of -f option, could result in flushing of rules
present in the main ruleset added by the system at startup.
See /etc/pf.conf for further details.

No ALTQ support in kernel
ALTQ related functions disabled

```

I’m running on mac os 10.14.5, have also tried 10.13  
Have confirmed that the sudoers file has been modified and have tried reboot

##### System information

```auto
Mitmproxy: 4.0.4
Python: 3.7.3
OpenSSL: OpenSSL 1.0.2r 26 Feb 2019
Platform: Darwin-18.6.0-x86_64-i386-64bit

```

any suggestions?

thank you