OpenWrt的两种模式：桥接模式与路由模式

OpenWrt的两种模式：桥接模式与路由模式

1、桥接模式（Bridged AP Mode ）：



通过OpenWrt 设备做桥，连接到OpenWrt的无线设备是由此网段192.168.1.0网段中的路由来分配IP地址的，所以此网段中的所有设备都是互通互连的！

OpenWrt设备的桥接配置方式：

[plain]
root@OpenWrt:~# cat /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 'lan'
option ifname 'eth0'
option type 'bridge'
option proto 'static'
option ipaddr '192.168.1.129'
option netmask '255.255.255.0'
option gateway '192.168.1.1'
option dns '202.101.172.46'
root@OpenWrt:~# cat /etc/config/wireless
config wifi-device radio0
option type mac80211
option channel 11
option hwmode 11ng
option path 'platform/ar933x_wmac'
option htmode HT20
list ht_capab SHORT-GI-20
list ht_capab SHORT-GI-40
list ht_capab RX-STBC1
list ht_capab DSSS_CCK-40
# REMOVE THIS LINE TO ENABLE WIFI:
# option disabled 1

config wifi-iface
option device radio0
option network lan
option mode ap
option ssid OpenWrt
option encryption none

root@OpenWrt:~# cat /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
option network 'lan'
option input ACCEPT
option output ACCEPT
option forward REJECT

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

config forwarding
option src lan
option dest wan

# We need 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