NAT policy for IP and PORT

Hi guys,

in the following source NAT policy what does it means "destination-port 25"? it means"destination port 25 both UDP and TCP protocols"? and if yes, what about if I want to apply the NAT policy only for the TCP protocol?

set security nat source rule-set nat_set_333 rule CICCIO_rule_13 match source-address-name s1.1.1.1
set security nat source rule-set nat_set_333 rule CICCIO_rule_13 match destination-address-name s2.2.2.2
set security nat source rule-set nat_set_333 rule CICCIO_rule_13 match destination-port 25
set security nat source rule-set nat_set_333 rule CICCIO_rule_13 then source-nat pool snat-3.3.3.3