Hi,
As the name suggests, "set firewall filter <name>" is for v4(inet) alone where as "set firewall family <any, bridge, ccc, evpn, inet, inet6,mpls,vpls>" give you wide range of family options.
jtac-mx960-re0# set firewall ?
Possible completions:
+ apply-groups Groups from which to inherit configuration data
+ apply-groups-except Don't inherit configuration data from these groups
> atm-policer Atm policer
> family Protocol family
> filter Define an IPv4 firewall filter
jtac-mx960-re0# set firewall family ?
Possible completions:
> any Protocol-independent filter
> bridge Protocol family BRIDGE for firewall filter
> ccc Protocol family CCC for firewall filter
> evpn Protocol family EVPN for firewall filter
> inet Protocol family IPv4 for firewall filter
> inet6 Protocol family IPv6 for firewall filter
> mpls Protocol family MPLS for firewall filter
> vpls Protocol family VPLS for firewall filter