# Raspberry Pi3 and mitmproxy

**URL:** <https://discourse.mitmproxy.org/t/raspberry-pi3-and-mitmproxy/932>\
**Category:** help\
**Created:** [March 21, 2018, 1:24pm UTC](https://discourse.mitmproxy.org/t/raspberry-pi3-and-mitmproxy/932 "2018-03-21T13:24:52Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![ZerOne10](https://avatars.discourse-cdn.com/v4/letter/z/5fc32e/32.png) [@ZerOne10](https://discourse.mitmproxy.org/u/ZerOne10)\
**Post date:** [March 21, 2018, 1:24pm UTC](https://discourse.mitmproxy.org/t/raspberry-pi3-and-mitmproxy/932/1 "2018-03-21T13:24:53Z")

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I already have a raspberry pi3, which is working as a router. There is also a bridge br0 to combine eth1 and wlan0 together. Now I want to use mitmproxy to check if some applications on my mobile phone have security issues.

I added two iptables entries on the raspberry:

> iptables -t nat -D PREROUTING -i br0 -p tcp --dport 80 -j REDIRECT --to-port 8080  
> iptables -t nat -D PREROUTING -i br0 -p tcp --dport 443 -j REDIRECT --to-port 8080

But now I don’t have any connection to the internet with my mobile phone… as example: [google.com](http://google.com) is running in a redirect loop

In the mitmproxy there’s the following error: Cannot connect to server, no server address given

Any tips how to troubleshoot/resolve this? What’s not clear for me at the moment: how can I setup the mitmproxy to log all communication (ports: 80,443) from my mobile phone and how does the mitmproxy know where to send the data when received from my mobile phone?