Rephrase the map legend

**Is your feature request related to a problem? Please describe.**
Unclear legend causes confusion

**Describe the solution you'd like**
Based on the legend it's hard to know what results are expected after a successful exploitations. "Tunneling" and "island communication" should be renamed to a more widely know terms like "C&C traffic" and "C&C traffic via proxy". As it's named right now, a user can expect successful exploitation to open an encrypted tunnel between the victim and the island, when in fact it does not.

No file or test is named in the issue; start by locating the map legend implementation and its current “Tunneling” and “island communication” labels. Update the wording to accurately describe C&C traffic and C&C traffic via proxy, then verify the legend in the map interface.

Written by the indexing model from the issue text.