What mechanism is used to access the Internet on the TP-Link TL-WR740N? I see that there is Internet on the WAN port, the LAN ports also work, but I do not have access to the Internet. Standard settings after firmware.
Welcome, tentakle.
Which OpenWrt release?
Which hardware revision?
This device has limited flash and RAM, please note the warning at the top of the device page.
How do you know that? Please show us the details.
From where? The router itself, or a PC connected to it?
Log in to the router, test your internet connection with the ping and nslookup tools and show us their output.
You can use the LuCI web interface (Network->Diagnostics) or the command line via SSH.
1 Like
TP-Link TL-WR740N v4.27
I tried different versions: 18.06.5 and 18.06.6
Used image builder and compiled openwrt-19.07.0-ath79-tiny-tplink_tl-wr740n-v4-squashfs-factory.bin version with LuCI and without LuCI. I also tried the ar71xx version.
The settings issued by the provider are the same as on the standard firmware https://imgur.com/a/jNfHt2k
I am connected via ethernet to a router that is connected via ethernet to a provider
So, like @mpa said, login to the router (via SSH or Luci) and try to ping some IP (e.g. 8.8.8.8) and some domain (e.g. Openwrt.org).
Also please send the output of the filling commands. Please use the Preformatted Text tool </> to include the code, and remember to redact your MAC addresses and any public IPs you may have
cat /etc/config/network
cat /etc/config/wireless
cat /etc/config/dhcp
cat /etc/config/firewall
These are the standard settings after the firmware. I didn’t change anything.
root@OpenWrt:~# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8): 56 data bytes
ping: sendto: Network unreachable
root@OpenWrt:~# ping openwrt.org
ping: bad address 'openwrt.org'
/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 globals 'globals'
option ula_prefix 'fd06:efda:2f42::/48'
config interface 'lan'
option type 'bridge'
option ifname 'eth0.1'
option proto 'static'
option ipaddr '192.168.1.1'
option netmask '255.255.255.0'
option ip6assign '60'
config interface 'wan'
option ifname 'eth1'
option proto 'dhcp'
config interface 'wan6'
option ifname 'eth1'
option proto 'dhcpv6'
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 3 4 0t'
/etc/config/wireless
config wifi-device 'radio0'
option type 'mac80211'
option channel '11'
option hwmode '11g'
option path 'platform/ar933x_wmac'
option htmode 'HT20'
option disabled '1'
config wifi-iface 'default_radio0'
option device 'radio0'
option network 'lan'
option mode 'ap'
option ssid 'OpenWrt'
option encryption 'none'
/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.auto'
option nonwildcard '1'
option localservice '1'
config dhcp 'lan'
option interface 'lan'
option start '100'
option limit '150'
option leasetime '12h'
option dhcpv6 'server'
option ra 'server'
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
config zone
option name wan
list network 'wan'
list network 'wan6'
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
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
# 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
### 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
Try again with the IP addresses for Gateway, DNS1 and DNS2 from the IPv4 Upstream box.
In addition, please run ip route and post its output.
Gateway responds, DNS1 and DNS2 do not respond to ping.
ip route
10.206.236.0/22 via 10.206.236.5 dev eth1 src 10.206.236.78
192.168.1.0/24 dev br-lan scope link src 192.168.1.1
The default route is missing, you should find out why. Try ifstatus wan.
1 Like
Okay, I added the route to the config and it worked, but I don’t understand why it doesn’t work right away?
/etc/config/network
config route
option interface 'wan'
option target '0.0.0.0'
option netmask '0.0.0.0'
option gateway '10.206.236.5'
ifstatus wan
{
"up": true,
"pending": false,
"available": true,
"autostart": true,
"dynamic": false,
"uptime": 287,
"l3_device": "eth1",
"proto": "dhcp",
"device": "eth1",
"updated": [
"addresses",
"routes",
"data"
],
"metric": 0,
"dns_metric": 0,
"delegation": true,
"ipv4-address": [
{
"address": "10.206.236.78",
"mask": 22
}
],
"ipv6-address": [
],
"ipv6-prefix": [
],
"ipv6-prefix-assignment": [
],
"route": [
{
"target": "0.0.0.0",
"mask": 0,
"nexthop": "10.206.236.5",
"source": "0.0.0.0\/0"
},
{
"target": "10.206.236.0",
"mask": 22,
"nexthop": "10.206.236.5",
"source": "10.206.236.78\/32"
},
{
"target": "0.0.0.0",
"mask": 0,
"nexthop": "10.206.236.5",
"source": "10.206.236.78\/32"
}
],
"dns-server": [
"10.81.3.19",
"10.59.3.19"
],
"dns-search": [
"blablabla.com"
],
"inactive": {
"ipv4-address": [
],
"ipv6-address": [
],
"route": [
],
"dns-server": [
],
"dns-search": [
]
},
"data": {
"leasetime": 42300
}
}
What's the IP address of your upstream router?
But I do not have an upstream router except for the provider’s router and theoretically I should not know its address. This is the gateway address. And I used it in the route.
Well, you must know the IP address of the router if you want to connect another router to it. The thing is that if you connect to the LAN to WAN then you have to have the routers on different subnets, and if you connect LAN to LAN then they should be on the same subnet but different IPs. In all cases they can't have the same IP of they are connected to each other directly.
Most routers come with default IP of 192.168.1.1, so I thought this could be the problem. But if you say its your gateway IP then the problem is somewhere else.
Anyway thanks for help.
This topic was automatically closed 10 days after the last reply. New replies are no longer allowed.