You can share the rules with another Symantec Endpoint Protection client so that you do not have to recreate them. You can export the rules from another computer and import them into your computer. When you import rules, they are added to the bottom of the firewall rules list. Imported rules do not overwrite existing rules, even if an imported rule is identical to an existing rule.
The exported rules and imported rules are saved in a .sar file.
For 12.1.x, Network and Host Exploit Mitigation is called Network Threat Protection