A configuration example in normal show mode:
user@SRX-ROUTER> show configuration firewall family inet filter iiNet-Voice 
/* iiVoip - National Services Block */
term SERVICES {
    from {
        address {
            203.173.44.0/24;
        }
    }
    then accept;
}
/* iiVoip - National SBC Networks */
term NETWORK {
    from {
        address {
            203.55.228.192/26;
            203.55.231.192/26;
            203.55.229.192/26;
            203.2.134.0/25;
            203.59.49.0/26;
        }
    }
    then accept;
}
/* iiVoip - National Configuration / DMS Services */
term CONFIGURATION {
    from {
        address {
            203.55.231.64/27;
            203.206.62.0/27;
        }
    }
    then accept;
}
/* iiVoip – Supplemental services, DNS and NTP */
term SUPPLEMENTAL {
    from {
        address {
            /* iiVoip - iiNet DNS and NTP */
            203.0.178.191/32;
            /* iiVoip - iiNet DNS */
            203.215.29.191/32;
        }
    }
    then accept;
}
/* Reject all other traffic */
term ELSE {
    /* Logging of rejects is not recommended */
    then {
        log;
        reject;
    }
}
 
An example in “set” mode:
set firewall family inet filter iiNet-Voice term SERVICES from address 203.173.44.0/24
set firewall family inet filter iiNet-Voice term SERVICES then accept
set firewall family inet filter iiNet-Voice term NETWORK from address 203.55.228.192/26
set firewall family inet filter iiNet-Voice term NETWORK from address 203.55.231.192/26
set firewall family inet filter iiNet-Voice term NETWORK from address 203.55.229.192/26
set firewall family inet filter iiNet-Voice term NETWORK from address 203.2.134.0/25
set firewall family inet filter iiNet-Voice term NETWORK from address 203.59.49.0/26
set firewall family inet filter iiNet-Voice term NETWORK then accept
set firewall family inet filter iiNet-Voice term CONFIGURATION from address 203.55.231.64/27
set firewall family inet filter iiNet-Voice term CONFIGURATION from address 203.206.62.0/27
set firewall family inet filter iiNet-Voice term CONFIGURATION then accept
set firewall family inet filter iiNet-Voice term SUPPLEMENTAL from address 203.0.178.191/32
set firewall family inet filter iiNet-Voice term SUPPLEMENTAL from address 203.215.29.191/32
set firewall family inet filter iiNet-Voice term SUPPLEMENTAL then accept
set firewall family inet filter iiNet-Voice term ELSE then log
set firewall family inet filter iiNet-Voice term ELSE then reject