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Internally you should be maintaining a secure environment anyhow, so there is no need. Between users and vulnerabilities, I can understand why people would want to turn on internal server firewalls, but generally no I don't see that happen. And that's from small to very large corporate entities. Mostly what I see is people who don't know how to manage their networks, or don't understand security, saying 'well I'm going to turn on the firewalls and now everything is Secure'. Most applications on internal networks expect wide ranges of ports to be open, and yes that is normal. If you have the time to manage every server at the port level, go ahead and enable them, but most administrators do not have enough time to handle normal day to day activities, let alone micromanaging networks like that.
Same with the iPod, everything can play music now. My iPad and phone included, so sure. The idea of an iPod that ONLY plays music is sort of a dated concept. My wife loves her nano and small iPods for the gym, which makes sense for working out and instances where you only need music. But in general, things like browsing the web or running apps is basically expected now, regardless of the ecosystem or OS. Now, I don't want to _have_ to buy a phone to play music, but when I can store it all on a device that I'm already carrying around, why would I bother with an extra device like an iPod (or any music player).