How about an iOS firewall app?

The exploit Charlie Miller found required downloading of a malicious app from the App Store. A firewall is completely irrelevant to that. Most average users ho are concerned about availability of firewalls don't seem to have a clue what firewalls actually protect them against and what their limitations are.

The iPad does not need a firewall. If you're somewhere like Starbucks, on a wide open network, you'd better not do anything on the network if you wouldn't be willing for a hacker to intercept the packets. But again, a firewall won't protect you there.

I agree, Thomas,

I usually limit the activities I do online over Wifi via places like Starbucks/B&N or Panera Bread.

These are open networks, so unless you know the websites you access via user names and passwords

are secure, then you shouldn't be accessing these sites on an open network.

For example, even though commerce site, like Amazon have a secure area, I tend not to shop or purchase anything online when I am using my iPad at locations that have open WiFi networks.

And I don't do anything at all with doing any banking things online when away from home or at an open network location. Even though these sites are supposed to be secure, I do have a little bit of paranoia about doing certain activities online away from my more secure home network.

It's more of a commom sense thing. Why do something that will really put your personal info/data at risk for no real need or reason.

I don't worry about trolling the Web or using my email as much. Again, with email, as long as I am only dealing with email from friends and relatives and it's not dealing with personal info from business, banking or commerce related emails, I do not think I am risking much to the potential hacker.

Firewalls on mobile devices just make the things you want to be able to do with these devices harder.

Most but not all trojans and virus occur because people click or download something that is not something they are, usually, familar with. If someone recieves an email or an attachment or a piece of downloadable data that's not something a person/s recognize, then you shouldn't deal with it and just delete it.

As far as Charlie Miller is concerned, he created his own problem by disguising the potential virus within an app and violated the Apple Apps Developer Agreement in the process. He was supposed to be a legitimate app DEVELOPER, not a security hacker working for Apple to find flaws in their mobile operating system.

And Miller exacerbated the whole issue by leaving his app up on the App store for quit awhile before telling Apple about what he did!

The fact that the virus appeared to get overlooked by the App Approval process is a little disconcerting, though.

Hopefully, Apple willl heed his advice, intentions and work and fix this issue.

Whenever ther has been a problem with an approved app, in the past, Apple is, usually, very quick to deal with and remove the problem App from the App Store.

Where a firewall will help is to control inbound and outbound traffic between the ios device and the internet. I want to be able to know what and if an app is sending data from my iphone or ipad with or without my knowledge. I do not believe for one second that every app submitted for inclusion to the App Store is 100% vetted and certainly not by real people in an office in cuppertino. How many apps tell you 100% I need access to this data and that data and I am going to send this data to wherever, some will others won't. I don't want a firewall to protect me from nasties I want a firewall so that I am in complete control of the data that I have on my device simples!

Something that has occurred to me is everybody seems concerned about a firewall while on wifi; Is there a firewall behind a cell signal through the provider?

Your best bet is to stop using all internet connected devices and switch back to snail mail and going to the bank.