Configuring a port for a separate address space (Radio modem)

Installing and Using OpenWrt
1

Here is what I want to do. I have a special wireless modem (Amateur radio) that I need to connect to LAN2 via Ethernet and be isolated from everything else except WAN. Basically what I want is a network off the switch port LAN2 with address 192.168.100.1/24. What I did was create an interface with LAN2 device with a static address of 192.168.100.1 and a DHCP server with starting address 150 and 20 addresses in pool. I tested it with a laptop connected on LAN2 but I dont get addresses in the range of 192.168.100.x instead I get an address of 192.168.1.167 which is my main LAN. This was not what I expected, what am I doing wrong? The 192.168.100.1 interface does respond to pings. Attached is network, DHCP and firewall configs

config interface 'loopback'
	option device 'lo'
	option proto 'static'
	option ipaddr '127.0.0.1'
	option netmask '255.0.0.0'

config globals 'globals'
	option ula_prefix 'fd05:eaf1:8ae5::/48'
	option packet_steering '1'

config device
	option name 'br-lan'
	option type 'bridge'
	list ports 'lan1'
	list ports 'lan2'
	list ports 'lan3'
	list ports 'lan4'
	list ports 'lan5'

config interface 'lan'
	option device 'br-lan'
	option proto 'static'
	option ipaddr '192.168.1.1'
	option netmask '255.255.255.0'
	option ip6assign '60'

config interface 'wan'
	option device 'eth1'
	option proto 'dhcp'

config interface 'wan6'
	option device 'eth1'
	option proto 'dhcpv6'

config interface 'GuestWifi'
	option proto 'static'
	option ipaddr '192.168.2.1'
	option netmask '255.255.255.0'
	list dns '8.8.8.8'
	list dns '1.1.1.1'

config interface 'NPRmaaster'
	option proto 'static'
	option device 'lan2'
	list dns '8.8.8.8'
	list dns '1.1.1.1'
	option ipaddr '192.168.100.1'
	option netmask '255.255.255.0'

DHCP

config dnsmasq
	option domainneeded '1'
	option boguspriv '1'
	option filterwin2k '0'
	option localise_queries '1'
	option rebind_protection '1'
	option rebind_localhost '1'
	option local '/lan/'
	option domain 'lan'
	option expandhosts '1'
	option nonegcache '0'
	option cachesize '1000'
	option authoritative '1'
	option readethers '1'
	option leasefile '/tmp/dhcp.leases'
	option resolvfile '/tmp/resolv.conf.d/resolv.conf.auto'
	option nonwildcard '1'
	option localservice '1'
	option ednspacket_max '1232'
	option filter_aaaa '0'
	option filter_a '0'

config dhcp 'lan'
	option interface 'lan'
	option start '100'
	option limit '150'
	option leasetime '12h'
	option dhcpv4 'server'
	option dhcpv6 'server'
	option ra 'server'
	option ra_slaac '1'
	list ra_flags 'managed-config'
	list ra_flags 'other-config'

config dhcp 'wan'
	option interface 'wan'
	option ignore '1'

config odhcpd 'odhcpd'
	option maindhcp '0'
	option leasefile '/tmp/hosts/odhcpd'
	option leasetrigger '/usr/sbin/odhcpd-update'
	option loglevel '4'
	option piofolder '/tmp/odhcpd-piofolder'

config dhcp 'GuestWifi'
	option interface 'GuestWifi'
	option start '100'
	option limit '150'
	option leasetime '12h'

config dhcp 'NPRmaaster'
	option interface 'NPRmaaster'
	option start '150'
	option limit '20'
	option leasetime '12h'

FIREWALL


config defaults
	option input 'REJECT'
	option output 'ACCEPT'
	option forward 'REJECT'
	option synflood_protect '1'

config zone
	option name 'lan'
	option input 'ACCEPT'
	option output 'ACCEPT'
	option forward 'ACCEPT'
	list network 'lan'

config zone
	option name 'wan'
	option input 'REJECT'
	option output 'ACCEPT'
	option forward 'REJECT'
	option masq '1'
	option mtu_fix '1'
	list network 'wan'
	list network 'wan6'

config forwarding
	option src 'lan'
	option dest 'wan'

config rule
	option name 'Allow-DHCP-Renew'
	option src 'wan'
	option proto 'udp'
	option dest_port '68'
	option target 'ACCEPT'
	option family 'ipv4'

config rule
	option name 'Allow-Ping'
	option src 'wan'
	option proto 'icmp'
	option icmp_type 'echo-request'
	option family 'ipv4'
	option target 'ACCEPT'

config rule
	option name 'Allow-IGMP'
	option src 'wan'
	option proto 'igmp'
	option family 'ipv4'
	option target 'ACCEPT'

config rule
	option name 'Allow-DHCPv6'
	option src 'wan'
	option proto 'udp'
	option dest_port '546'
	option family 'ipv6'
	option target 'ACCEPT'

config rule
	option name 'Allow-MLD'
	option src 'wan'
	option proto 'icmp'
	option src_ip 'fe80::/10'
	list icmp_type '130/0'
	list icmp_type '131/0'
	list icmp_type '132/0'
	list icmp_type '143/0'
	option family 'ipv6'
	option target 'ACCEPT'

config rule
	option name 'Allow-ICMPv6-Input'
	option src 'wan'
	option proto 'icmp'
	list icmp_type 'echo-request'
	list icmp_type 'echo-reply'
	list icmp_type 'destination-unreachable'
	list icmp_type 'packet-too-big'
	list icmp_type 'time-exceeded'
	list icmp_type 'bad-header'
	list icmp_type 'unknown-header-type'
	list icmp_type 'router-solicitation'
	list icmp_type 'neighbour-solicitation'
	list icmp_type 'router-advertisement'
	list icmp_type 'neighbour-advertisement'
	option limit '1000/sec'
	option family 'ipv6'
	option target 'ACCEPT'

config rule
	option name 'Allow-ICMPv6-Forward'
	option src 'wan'
	option dest '*'
	option proto 'icmp'
	list icmp_type 'echo-request'
	list icmp_type 'echo-reply'
	list icmp_type 'destination-unreachable'
	list icmp_type 'packet-too-big'
	list icmp_type 'time-exceeded'
	list icmp_type 'bad-header'
	list icmp_type 'unknown-header-type'
	option limit '1000/sec'
	option family 'ipv6'
	option target 'ACCEPT'

config rule
	option name 'Allow-IPSec-ESP'
	option src 'wan'
	option dest 'lan'
	option proto 'esp'
	option target 'ACCEPT'

config rule
	option name 'Allow-ISAKMP'
	option src 'wan'
	option dest 'lan'
	option dest_port '500'
	option proto 'udp'
	option target 'ACCEPT'

config zone
	option name 'GuestZone'
	option input 'REJECT'
	option output 'ACCEPT'
	option forward 'REJECT'
	list network 'GuestWifi'

config forwarding
	option src 'GuestZone'
	option dest 'wan'

config rule
	option src 'GuestZone'
	option name 'GuestDHCP'
	option dest_port '67'
	option target 'ACCEPT'

config rule
	option src 'NPRZone'
	option name 'NPR DHCP'
	option dest_port '67'
	option target 'ACCEPT'

config rule
	option src 'GuestZone'
	option name 'Guest DNS'
	option dest_port '53'
	option target 'ACCEPT'

config rule
	option src 'NPRZone'
	option name 'NPR DNS'
	option dest_port '53'
	option target 'ACCEPT'

config zone
	option name 'NPRZone'
	option input 'REJECT'
	option output 'ACCEPT'
	option forward 'REJECT'
	list network 'NPRmaaster'

config forwarding
	option src 'NPRZone'
	option dest 'wan'
2

You have to remove lan2 port from br-lan or alternatively put in separate vlan of br-lan

2 Likes
3

Removing LAN2 from bridge worked perfectly! Thank you for the help.

1 Like
4

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