[Solved] No internet on Raspberry Pi Zero as router

newbie2 · December 30, 2021, 10:51pm

Hello community,

I tried to make a travel router for an RPi0 by following the guides:

https://pentestit.de/raspberry-pi-zero-w-als-reise-router-einrichten/

https://www.makeuseof.com/tag/raspberry-pi-vpn-travel-router/

I am using a comfast 7601 based WiFi adapter to connect to internet and the inbuilt wireless to share the internet. (It is the reverse of what the guides say as the comfast adapter has problems when I use it as for the access point. This was suggested by another post in the forum: WORKAROUND: MT7601 USB Wifi not working)

The problem is that the devices connected to the pi do not get internet while the pi itself has access to internet.

Can anybody help?

psherman · December 30, 2021, 11:05pm

We need more info. see below.

I do have a guess, but it may or may not be right -- I'll only know when I see the rest of the config files.

you may have created the wan interface with capital letters (WAN) and therefore it may not be associated with the wan firewall zone. To fix it, make the interface lowercase (wan).

Please copy the output of the following commands and post it here using the "Preformatted text </> " button:

Remember to redact passwords, MAC addresses and any public IP addresses you may have:

cat /etc/config/network
cat /etc/config/wireless
cat /etc/config/dhcp
cat /etc/config/firewall

newbie2 · December 31, 2021, 11:56am

@psherman

/etc/config/network

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 'fdbe:56e5:4ddc::/48'

config device
	option name 'br-lan'
	option type 'bridge'
	list ports 'wlan0'

config interface 'lan'
	option device 'br-lan'
	option proto 'static'
	option ipaddr '192.168.180.1'
	option netmask '255.255.255.0'
	option ip6assign '60'
	option gateway '192.168.1.1'

config interface 'wwan'
	option proto 'dhcp'
	option peerdns '0'
	option dns '1.1.1.1 8.8.8.8'

/etc/config/wireless

config wifi-device 'radio0'
	option type 'mac80211'
	option hwmode '11g'
	option path 'platform/soc/20300000.mmcnr/mmc_host/mmc1/mmc1:0001/mmc1:0001:1'
	option htmode 'HT20'
	option disabled '0'
	option cell_density '0'
	option channel '3'

config wifi-iface 'wifinet1'
	option device 'radio0'
	option network 'lan'
	option mode 'ap'
	option key 'password_goes_here'
	option encryption 'psk2'
	option ssid 'Travel'

config wifi-device 'radio1'
	option type 'mac80211'
	option channel '11'
	option hwmode '11g'
	option path 'platform/soc/20980000.usb/usb1/1-1/1-1:1.0'
	option htmode 'HT20'
	option disabled '0'

config wifi-iface 'default_radio1'
	option device 'radio1'
	option network 'wwan'
	option mode 'sta'
	option ssid 'Router SSID'
	option encryption 'psk2'
	option key 'SSID Password goes here'

/etc/config/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 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'

config dhcp 'lan'
	option interface 'lan'
	option start '100'
	option limit '150'
	option leasetime '12h'
	option dhcpv4 'server'
	option dhcpv6 'server'
	option ra 'server'
	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'

/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

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 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

config rule
	option name		Allow-IGMP
	option src		wan
	option proto		igmp
	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		fc00::/6
	option dest_ip		fc00::/6
	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

# 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

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

# allow interoperability with traceroute classic
# note that traceroute uses a fixed port range, and depends on getting
# back ICMP Unreachables.  if we're operating in DROP mode, it won't
# work so we explicitly REJECT packets on these ports.
config rule
	option name		Support-UDP-Traceroute
	option src		wan
	option dest_port	33434:33689
	option proto		udp
	option family		ipv4
	option target		REJECT
	option enabled		false

# include a file with users custom iptables rules
config include
	option path /etc/firewall.user

frollic · December 31, 2021, 12:06pm

Is the wwan in the wan zone ?

newbie2 · December 31, 2021, 2:55pm

@frollic : Seems to have solved the issue.
Added

list network 'wwan'

under the wan config zone.

I am now getting internet through the OpenWrt router!

Thanks..

system · January 10, 2022, 2:55pm

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