quick question, do i have to "play" with any firewall on the Windows server?

I am looking at something on the web and they typed this in the KRB5 conf file:
[realms]
XJSIMPLE.FOO = {
kdc = 192.168.0.1:88
admin_server = 192.168.0.1:749
default_domain = xjsimple.foo
}

do i have to enter ports and/or use IP to connect to server?

i can ping it from IP and name.