let's say i have two office spaces in a multi-tenant building. landlord was kind enough to provide me with copper cat 6 cable connecting both of the disjoint spaces.
i could just attach network switches at both ends and create a flat L2 network. but i'd like to be sure that other tenants cannot easily tap into the cable and eavesdrop on the traffic passing between two of my offices.
what solution would you propose here? ideally it should provide a transparent L2 connectivity and handle few hundreds of mbit/s. i'd prefer off-the-shelf devices that can be easily replaced.
with encrypted home-plug gear or wireless access points providing wpa2-psk - seems like the encryption hardware is available.
some of my ideas:
- use proper hardware ethernet encryption device like this; unfortunately those seem to be quite expensive
- put two linux servers on both ends of the connection and run openvpn on them to provide transparent l2 bridge with encryption of traffic crossing the 'untrusted' segment
thanks for any suggestions!