Can an iPhone/iPod Touch application open a port for remote communication without jailbreaking?

I'm researching remote control testing for an app that'll be installed on the new iPod Touch and can't tell for certain from everything that I've read whether or not an installed app can or can't open any ports for remote test instructions (that's a mouthful : ) We created something like this for the Android using adb port forwarding and telnet, and it worked really well. 开发者_运维问答 Is there any chance something similar could be done on an iPhone or iPod without jailbreaking??

Sure, you have access to the traditional Unix networking layer and a Cocoa layer built on top of that as well.