I'm evaluating Fiddler Everywhere, and trying troubleshoot a java application. 

Initially Fiddler shows a warning that it cant decrypt HTTPS, so I install the root certificate into Arch and trust it, set Fiddler to use system proxy, and then set up the application to point to Fiddlers proxy.

The warning in Fiddler then disappears, so it gives the impression I've done everything right

At this point it can show HTTPS connections (although they are shown as HTTP, and METHOD is always CONNECT, rather than the GET I was expecting to see).

It's also then able to show HTTP(S) headers, but never the actual decrypted response or request body

Any help appreciated thanks

 

 

How to change google logo size with fiddler

Hello,

I use Firefox to redirect traffic to Fiddler (with the foxyProxy or FiddlerFox extension). I installed the Fiddler certificate by importing it into Firefox and configured the HTTPS and Fiddler tab with Decrypt HTTPS traffic and Ignore server certificate errors checked.

It works with most sites. But recently I've noticed that some sites are resisting this method. I've tested several workarounds, in Firefox I've set security.certerrors.mitm.auto_enable_enterprise to false and security.enterprise_roots.enabled to true

But it still doesn't work, for example I can't intercept this site's traffic via Firefox: https://www.unibet.fr/sport

Firefox displays this message and no security exception is possible:

Connection blocked: potential security problem

Firefox has detected a problem and stopped www.unibet.fr from loading. Either the site is incorrectly configured or your computer's clock is set to the wrong time.

The site's certificate has probably expired, preventing Firefox from establishing a secure connection.

What can you do about this?

www.unibet.fr uses HTTP Strict Transport Security (HSTS), so a secure connection is required to access it. You cannot add an exception to visit this site.

The problem probably stems from the website, so you can't do anything about it. You can report it to the people who administer the site.

Is fiddle compatible with iOS?

Is it possible to remove the HttpOnly cookie flag in FiddlerScript?

It appears that the cookie header for this type of cookies is not accessible via oSession.oResponse.headers['Set-Cookie']. Is this by design, or am I missing something?

Thank you,
Alex

I used Fiddler over a year ago to put my local image files into an art board in an online game.  However, I recently got back into the game, and when I go to put my custom images into the art boards, it no longer works. I used the autoresponder to make a rule that will put the picture on the art board once I open it. The URLs match perfectly, but for some unknown reason, the picture will not show up in the game. I have the "enable rules" checked before I open the art board, so the picture is supposed to show up when I open it. Any suggestions on how to make this work? I've looked all over the internet, and this is my last resort.

Hello, I am IT for our compnay. We have a developer who is using Fiddler on a macOS Ventura with Temp admin rights. The rights need to be engaged and only last for 60 minutes.

The developer says that Fiddler requires full admin all the time for Fiddler to adjust system proxy settings at startup.

The developer says that the mac has lost all internet connectivity because Fiddler does not have access to manage proxy settings at startup. Is this true?

Please advise. Notes from developer below

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Subject: Mac lost internet connection with Fiddler

Hi Russell, a similar situation happened again. Steps: - run "Grant admin privileges 60 min" - run "Fiddler Everywhere" - change system proxy settings
Then, after about 5-7 minutes, i got the message "Grant admin privileges 60 minutes" has expired.
I can't get "Grant admin privileges for 60 minutes" in self service. I can't restore system proxy settings without administrator.
For now i have an internet connection through Chrome and i'm logged in. Please advice on system recovery

 

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Subject: Mac lost internet connection with Fiddler

Hi R,

 

The software we have used was Fiddler 

https://www.telerik.com/fiddler

 

It has an option to “Act as system proxy on startup”.

 

So when Fiddler is launched – it requires to enter admin’s password to modify global system proxy settings. Also when you finish work and close it – once again admin’s password is required to remove global proxy settings.

 

Regards,

R

Okay, so i'm not sure if this is in the right spot or not but here it goes.

 

I am using Fiddler Core in my C# program. In my program; I have several checkboxes and each checkbox sets utilreplaceinresponse; while this is all good; After the session is complete; I need to have Fiddler Block that same url from reloading unless the program is closed or cache is cleared. How can I achieve this?

I would like to suggest that Fiddler products be added to the Progress Control Panel to allow better management of updates and installations.

I'm trying to output information to the log, I do " Console.Write("22s");" . After looking at the Log, I do not find this text there. How to correctly output it to Log?

 

     if (oSession.url.Contains("google.com")) {
            Console.Out.Write("22s");
        }