Basic explanation of what the Routed AP mode is and the configuration of RB in Routed AP mode is given here. Configuration specific to our network is given below.
File: /etc/config/network
config interface 'loopback' option ifname 'lo' option proto 'static' option ipaddr '127.0.0.1' option netmask '255.0.0.0' config interface 'wan' option ifname 'eth0' option proto 'static' option ipaddr '114.143.217.58' option netmask '255.255.255.248' option gateway '114.143.217.57' option dns '8.8.8.8' config interface 'wifi' option proto 'static' option ipaddr '192.168.1.1' option netmask '255.255.255.0' config switch option name 'switch0' option reset '1' option enable_vlan '1' config switch_vlan option device 'switch0' option vlan '1' option ports '1 2 5'
Here, it is assumed that the IP addresses are assigned in a static manner. If a DHCP server can lease IP addresses to the RB, then replace 'option proto static' with 'option proto dhcp' and delete (or comment) the next three lines.
File: /etc/config/wireless
config wifi-device 'radio0' option type 'mac80211' option hwmode '11g' option txpower '27' option path 'pci0000:00/0000:00:14.0' option country 'US' option channel '1' config wifi-iface option device 'radio0' option network 'wifi' option mode 'ap' option ssid 'IITB-TVWS' option encryption 'none'
File: /etc/config/dhcp
config dnsmasq option domainneeded 1 option boguspriv 1 option filterwin2k 0 # enable for dial on demand option localise_queries 1 option rebind_protection 1 # disable if upstream must serve RFC1918 addresses option rebind_localhost 1 # enable for RBL checking and similar services #list rebind_domain example.lan # whitelist RFC1918 responses for domains option local '/lan/' option domain 'lan' option expandhosts 1 option nonegcache 0 option authoritative 1 option readethers 1 option leasefile '/tmp/dhcp.leases' option resolvfile '/tmp/resolv.conf.auto' #list server '/mycompany.local/1.2.3.4' #option nonwildcard 1 #list interface br-lan #list notinterface lo #list bogusnxdomain '64.94.110.11' config dhcp lan option interface lan option start 100 option limit 150 option leasetime 12h option ignore 1 config dhcp wan option interface wan option ignore 1 config dhcp wifi option interface wifi option start 100 option limit 150 option leasetime 12h
File: /etc/config/firewall
config defaults
option syn_flood 1
option input ACCEPT
option output ACCEPT
option forward REJECT
# Uncomment this line to disable ipv6 rules
# option disable_ipv6 1
config zone
option name lan
list network 'lan'
option input ACCEPT
option output ACCEPT
option forward ACCEPT
option masq 1
option mtu_fix 1
config zone
option name wan
list network 'wan'
list network 'wan6'
option input ACCEPT
option output ACCEPT
option forward REJECT
option masq 1
option mtu_fix 1
config zone
option name wifi
list network 'wifi'
option input ACCEPT
option output ACCEPT
option forward REJECT
config forwarding
option src lan
option dest wan
config forwarding
option src wifi
option dest wan
config redirect
option 'name' 'Dhuktan-1'
option 'src' 'wan'
option 'proto' 'tcpudp'
option 'src_dport' '8006'
option 'dest_ip' '192.168.1.6'
option 'dest_port' '80'
option 'target' 'DNAT'
option 'dest' 'wifi'
config redirect
option 'name' 'Khamloli-1'
option 'src' 'wan'
option 'proto' 'tcpudp'
option 'src_dport' '8002'
option 'dest_ip' '192.168.1.2'
option 'dest_port' '80'
option 'target' 'DNAT'
option 'dest' 'wifi'
config redirect
option 'name' 'Bahadoli-1'
option 'src' 'wan'
option 'proto' 'tcpudp'
option 'src_dport' '8007'
option 'dest_ip' '192.168.1.7'
option 'dest_port' '80'
option 'target' 'DNAT'
option 'dest' 'wifi'
# We neeqd to accept udp packets on port 68,
# see https://dev.openwrt.org/ticket/4108
config rule
option name Allow-DHCP-Renew
option src wan
option proto udp
option dest_port 68
option target ACCEPT
option family ipv4
# Allow IPv4 ping
config rule
option name Allow-Ping
option src wan
option proto icmp
option icmp_type echo-request
option family ipv4
option target ACCEPT
# Allow DHCPv6 replies
# see https://dev.openwrt.org/ticket/10381
config rule
option name Allow-DHCPv6
option src wan
option proto udp
option src_ip fe80::/10
option src_port 547
option dest_ip fe80::/10
option dest_port 546
option family ipv6
option target ACCEPT
# Allow essential incoming IPv6 ICMP traffic
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
# Allow essential forwarded IPv6 ICMP traffic
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
# include a file with users custom iptables rules
config include
option path /etc/firewall.user
### EXAMPLE CONFIG SECTIONS
# do not allow a specific ip to access wan
#config rule
# option src lan
# option src_ip 192.168.45.2
# option dest wan
# option proto tcp
# option target REJECT
# block a specific mac on wan
#config rule
# option dest wan
# option src_mac 00:11:22:33:44:66
# option target REJECT
# block incoming ICMP traffic on a zone
#config rule
# option src lan
# option proto ICMP
# option target DROP
# port redirect port coming in on wan to lan
#config redirect
# option src wan
# option src_dport 80
# option dest lan
# option dest_ip 192.168.16.235
# option dest_port 80
# option proto tcp
# port redirect of remapped ssh port (22001) on wan
#config redirect
# option src wan
# option src_dport 22001
# option dest lan
# option dest_port 22
# option proto tcp
# allow IPsec/ESP and ISAKMP passthrough
#config rule
# option src wan
# option dest lan
# option protocol esp
# option target ACCEPT
#config rule
# option src wan
# option dest lan
# option src_port 500
# option dest_port 500
# option proto udp
# option target ACCEPT
### FULL CONFIG SECTIONS
#config rule
# option src lan
# option src_ip 192.168.45.2
# option src_mac 00:11:22:33:44:55
# option src_port 80
# option dest wan
# option dest_ip 194.25.2.129
# option dest_port 120
# option proto tcp
# option target REJECT
#config redirect
# option src lan
# option src_ip 192.168.45.2
# option src_mac 00:11:22:33:44:55
# option src_port 1024
# option src_dport 80
# option dest_ip 194.25.2.129
# option dest_port 120
# option proto tcp
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