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Adjective used to describe the state of activities performed in relation to a corporate or private network, typically via a VPN. When offlan, no VPN connection is available; hence, no internal resources are available. One may still have network access to the Internet or other resources, but when offlan, internal web sites or other servers are unavailable.

Antonym: onlan
Even though I had signal, I was offlan, so I could not get to the files you put on the server.
by TizzyD September 21, 2010
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