These products don’t have Ethernet ESD protection:
RB750, RB750GL, RB250GS, RB1200.
ALL other products on our website has both RF and Ethernet ESD protection. See brochures for values in kV (same for RF and also for Ethernet).
ALL the products that have ESD protection, support protection with a shielded cable. The cable connects the grounding either to the ethernet Shield, or to a special grounding pin inside the connector, if there is no outside shield (plastic connector).