Firewall help - block VLANs from accessing admin network

Got another question for you guys!

I've managed to create 3 VLANs and prevent them from communicating with each other but still keeping internet access. I'm struggling to figure out how to stop them from accessing my 192.168.1.0/24 network however (where the management interface resides). Basically, I don't want users on these VLANs to be able to log in to the Edgerouter or anything else on the same network as the Edgerouter.

I tried adding a specific rule in the VLAN_IN firewall group, to drop packets going to 192.168.1.0/24 and then another for the specific 192.168.1.100 IP address, but that didn't work and clients on the VLANs were able to access 192.168.1.100

Any suggestions?

Full configuration is below:

firewall {
    all-ping enable
    broadcast-ping disable
    group {
        address-group ROUTER_IP {
            address 192.168.8.9
            address 192.168.16.17
            address 192.168.24.25
        }
        network-group VLAN_NETS {
            network 192.168.8.8/29
            network 192.168.16.16/29
            network 192.168.24.24/29
        }
    }
    ipv6-receive-redirects disable
    ipv6-src-route disable
    ip-src-route disable
    log-martians enable
    name VLAN_IN {
        default-action accept
        rule 10 {
            action accept
            destination {
                group {
                    address-group ROUTER_IP
                }
            }
        }
        rule 20 {
            action drop
            destination {
                group {
                    network-group VLAN_NETS
                }
            }
        }
    }
    options {
        mss-clamp {
            mss 1492
        }
    }
    receive-redirects disable
    send-redirects enable
    source-validation disable
    syn-cookies enable
}
interfaces {
    ethernet eth0 {
        address 192.168.1.100/24
        duplex auto
        speed auto
    }
    ethernet eth1 {
        duplex auto
        speed auto
        vif 20 {
            address 192.168.8.9/29
            description mate
            firewall {
                in {
                    name VLAN_IN
                }
            }
        }
        vif 30 {
            address 192.168.16.17/29
            description tpg
            firewall {
                in {
                    name VLAN_IN
                }
            }
        }
        vif 40 {
            address 192.168.24.25/29
            description skymesh
            firewall {
                in {
                    name VLAN_IN
                }
            }
        }
    }
    ethernet eth2 {
        duplex auto
        pppoe 0 {
            default-route auto
            mtu 1492
            name-server auto
            password ****************
            user-id ****************
        }
        speed auto
    }
    ethernet eth3 {
        duplex auto
        speed auto
    }
    ethernet eth4 {
        duplex auto
        speed auto
    }
    loopback lo {
    }
    switch switch0 {
        mtu 1500
    }
}
service {
    dhcp-server {
        disabled false
        hostfile-update disable
        shared-network-name mate {
            authoritative disable
            subnet 192.168.8.8/29 {
                default-router 192.168.8.9
                dns-server 192.168.8.9
                lease 86400
                start 192.168.8.10 {
                    stop 192.168.8.14
                }
            }
        }
        shared-network-name skymesh {
            authoritative disable
            subnet 192.168.24.24/29 {
                default-router 192.168.24.25
                dns-server 192.168.24.25
                lease 86400
                start 192.168.24.26 {
                    stop 192.168.24.30
                }
            }
        }
        shared-network-name tpg {
            authoritative disable
            subnet 192.168.16.16/29 {
                default-router 192.168.16.17
                dns-server 192.168.16.17
                lease 86400
                start 192.168.16.18 {
                    stop 192.168.16.22
                }
            }
        }
        use-dnsmasq disable
    }
    dns {
        forwarding {
            cache-size 150
            listen-on eth1.20
            listen-on eth1.30
            listen-on eth1.40
        }
    }
    gui {
        http-port 80
        https-port 443
        listen-address 192.168.1.100
        older-ciphers enable
    }
    nat {
        rule 5000 {
            description mate
            log disable
            outbound-interface pppoe0
            protocol all
            type masquerade
        }
    }
    ssh {
        port 22
        protocol-version v2
    }
}
system {
    host-name ubnt
    login {
        user ubnt {
            authentication {
                encrypted-password ****************
            }
            level admin
        }
    }
    name-server 8.8.8.8
    name-server 8.8.4.4
    ntp {
        server 0.ubnt.pool.ntp.org {
        }
        server 1.ubnt.pool.ntp.org {
        }
        server 2.ubnt.pool.ntp.org {
        }
        server 3.ubnt.pool.ntp.org {
        }
    }
    syslog {
        global {
            facility all {
                level notice
            }
            facility protocols {
                level debug
            }
        }
    }
    time-zone UTC
}