I configured a OpenVPN Server on my OpenWRT-Router. As I testet, a client can connect to my OpenVPN-Server and access to the Internet is possible and even connecting to lan-devices.
But the other way it doesnt work. Which means, my lan-devices cannot ping the vpn-device. I guess there should be some configuration about NAT or firewall on the openwrt-router. I tried a lot but its not more than try and error. So maybe you can give me an advice how to solve my task.
So I need to connect my lan 192.168.0.0/24 with my vpn 10.21.173.0/24 on the openwrt-device.
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
ubus call system board; \
uci export network; uci export dhcp; uci export firewall; \
head -n -0 /etc/firewall.user; \
ip -4 addr ; ip -4 ro li tab all ; ip -4 ru
My local router has 192.168.0.2
(the reason is the switch from an old router to the new one years ago and I didnt changed back to 192.168.0.1)
My openvpn router address is 10.21.173.1
A working vpn-client ist 10.21.173.6
My ISP-Adress ist xx.xx.x.xxx
IPv6 Iam not using.
I hope you see easly the reason for not getting a ping by start the request in 192.168.0.0/24 and try to reach 10.21.173.0/24. The ping from 192.168.0.2 to 10.21.173.6 works.
So long
dafosy
root@OpenWrt:/tmp/yamon# ubus call system board; \
> uci export network; uci export dhcp; uci export firewall; \
> head -n -0 /etc/firewall.user; \
> ip -4 addr ; ip -4 ro li tab all ; ip -4 ru
{
"kernel": "4.14.180",
"hostname": "OpenWrt",
"system": "ARMv7 Processor rev 0 (v7l)",
"model": "Netgear Nighthawk X4S R7800",
"board_name": "netgear,r7800",
"release": {
"distribution": "OpenWrt",
"version": "19.07.3",
"revision": "r11063-85e04e9f46",
"target": "ipq806x/generic",
"description": "OpenWrt 19.07.3 r11063-85e04e9f46"
}
}
package 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 'xxxx:xxxx:xxxx::/48'
config interface 'lan'
option type 'bridge'
option ifname 'eth1.1'
option proto 'static'
option netmask '255.255.255.0'
option ip6assign '60'
option gateway '192.168.0.2'
list dns '192.168.0.2'
option ipaddr '192.168.0.2'
config interface 'wan'
option ifname 'eth0.2'
option proto 'dhcp'
config interface 'wan6'
option ifname 'eth0.2'
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 6t'
config switch_vlan
option device 'switch0'
option vlan '2'
option ports '5 0t'
config interface 'vpn0'
option ifname 'tun0'
option proto 'none'
option auto '1'
package 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 dhcpv6 'server'
option ra 'server'
option ra_management '1'
option start '50'
option leasetime '12h'
option limit '200'
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'
package firewall
config defaults
option syn_flood '1'
option input 'ACCEPT'
option output 'ACCEPT'
option forward 'REJECT'
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'
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 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'
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 include
option path '/etc/firewall.user'
config rule
option name 'Allow-OpenVPN-Inbound'
option target 'ACCEPT'
option src '*'
option proto 'udp'
option dest_port '1194'
config zone
option name 'vpn'
option input 'ACCEPT'
option forward 'REJECT'
option output 'ACCEPT'
option network 'vpn0'
config forwarding
option src 'vpn'
option dest 'wan'
config forwarding
option src 'vpn'
option dest 'lan'
# This file is interpreted as shell script.
# Put your custom iptables rules here, they will
# be executed with each firewall (re-)start.
# Internal uci firewall chains are flushed and recreated on reload, so
# put custom rules into the root chains e.g. INPUT or FORWARD or into the
# special user chains, e.g. input_wan_rule or postrouting_lan_rule.
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1000
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
7: br-lan: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP qlen 1000
inet 192.168.0.2/24 brd 192.168.0.255 scope global br-lan
valid_lft forever preferred_lft forever
9: eth0.2@eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP qlen 1000
inet xx.xx.x.xxx/24 brd xx.xx.x.255 scope global eth0.2
valid_lft forever preferred_lft forever
11: tun0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN qlen 100
inet 10.21.173.1 peer 10.21.173.2/32 scope global tun0
valid_lft forever preferred_lft forever
default via xx.xx.x.xxx dev eth0.2 src xx.xx.x.xxx
10.21.173.0/29 via 10.21.173.2 dev tun0
10.21.173.2 dev tun0 scope link src 10.21.173.1
xx.xx.x.x/24 dev eth0.2 scope link src xx.xx.x.xxx
192.168.0.0/24 dev br-lan scope link src 192.168.0.2
local 10.21.173.1 dev tun0 table local scope host src 10.21.173.1
broadcast xx.xx.x.x dev eth0.2 table local scope link src xx.xx.x.xxx
local xx.xx.x.xxx dev eth0.2 table local scope host src xx.xx.x.xxx
broadcast xx.xx.x.xxx dev eth0.2 table local scope link src xx.xx.x.xxx
broadcast 127.0.0.0 dev lo table local scope link src 127.0.0.1
local 127.0.0.0/8 dev lo table local scope host src 127.0.0.1
local 127.0.0.1 dev lo table local scope host src 127.0.0.1
broadcast 127.255.255.255 dev lo table local scope link src 127.0.0.1
broadcast 192.168.0.0 dev br-lan table local scope link src 192.168.0.2
local 192.168.0.2 dev br-lan table local scope host src 192.168.0.2
broadcast 192.168.0.255 dev br-lan table local scope link src 192.168.0.2
0: from all lookup local
32766: from all lookup main
32767: from all lookup default
root@OpenWrt:/tmp/yamon#
Consider to use topology subnet and client-to-client.
Otherwise you need to push/add the routes manually on every VPN client and utilize NAT on OpenWrt.
To avoid NAT, configure site-to-site connection.
thanks for reply. Could you be a bit more precise.
Two days ago a added to /etc/config/openvpn the line "option route 192.168.0.0 255.255.255.0" and I ended in the failsafe mode to recover the router.
So what do you recommend:
(1) In the Open-WRT GUI - VPN - OpenVPN - VPN Iam already check the box "client-to-client".
(2) where do I find "topology subnet" and what do I write in the box? 192.168.0.0/24?
(3) Where do I configure side-to-side connections?
Sorry for all the questions. I read a lot and be proud that OpenVPN works somehow, but for deeper configuration I need a bit help.
I just switched from DD-WRT to OpenWRT and even OpenVPN has a bit more configuration-options.
I connect with my windows-maschine 10.21.173.6 to the openvpn-network. As I told you, this network is working for internet-purposes. A ping from my local-ubuntu-maschine 192.168.0.4 to 10.21.173.6 doesnt work. The other way it is working.
