Problem: Cannot get a login using MacWise with Telnet and a VPN connection.
Error might be, "Failed: Operation timed out"
or it might be "Sorry, you must SET LINE or SET HOST first"
The simple fix can be to set the VPN service order to the top of the list in Network Preferences.
Select System Preferences... from the Apple Menu
Then select Network
Find your VPN in the list of networks in the left column and drag it to the top of the list.
That's it.
Now your VPN has first priority when making a connection to the internet and your telnet connection should work with MacWise.
Note that lots of things can cause a telnet connection to fail but this is one you might never think of.