We were considering an article on this topic, but our own Lex Friedman had already worked through the possible options for an old iPad in an article for Macworld. So if you’re pondering what to do after upgrading to an iPad 2, check out his advice. follow link
Trust Local Addresses in VirusBarrier X6's Antivandal
VirusBarrier X6's Antivandal feature stops all kinds of network attacks, including port scans, ping floods and more. However, you may have some devices on your network that send out pings or other requests that may be interpreted as attacks. To prevent this, add them to the Trusted Addresses list so they won't be blocked. You can even add a range of addresses with wildcards, such as 192.168.1.*.
- ExtraBITS for 14 March 2011 (14 Mar 11)
What to Do with Your Old iPad
Luckily, there's no need to deactivate an old device or anything like that; apps are tied to an iTunes account, not to individual devices. (iTunes accounts are tied to Macs, though, so if you ever get rid of a Mac, it's easiest to choose Store > Deauthorize This Computer before you reformat the hard drive.)