CharlesProxy -Cisco Anyconnect - Android

Question

Am unable to make CharlesProxy work on Android or iOS device. The laptop and mobile devices are behind Anyconnect VPN. Any pointers here would help. Thanks.

Answer 1

I had an issue with Charles and AnyConnect for a long time:

• If I opened Charles first, AnyConnect would just spin on the 'Contacting [host]...." and never open the panel to enter credentials.

• If I opened AnyConnect and connected to the host first Charles would not monitor any network traffic.

I stumbled on this (non-technical) solution which always works for me (though I don't understand why):

• Close both AnyConnect and Charles Proxy.
• Open AnyConnect and click the "Connect" button but do NOT enter your credentials yet.
• Open Charles.
• Enter you credentials to connect with AnyConnect.

VPN is now connected and Charles monitors all network traffic.

Works for me every time.

Answer 2

It depends on VVPN version. The main idea is to try different approaches

For example:

connect Charles Proxy -> connect VPN

Answer 3

Basically, VPN doesn't cooperate well with any Proxy Tools.

You might fix it by open the Cisco AnyConnect VPN Preference -> Select "Block Connection to untrusted server".

Then opening Charles Proxy or Proxyman first, then open the VPN later.