No Wireguard Handshake -- Double Router - Configs included

Installing and Using OpenWrt
1

Hey guys, hope you can help... I'm new to OpenWRT and this is just a project for home.

I'm currently on OpenWRT 21.02.0 RC3, and my configuration at home looks like this:

ISP Router (BRIDGE MODE) ---> Nighthawk Router ----> OpenWRT Router.

If it matters, I run lan to wan from Nighthawk to Openwrt.

I want my OpenWrt router to route ALL traffic I connect to the OPENWRT router through the wireguard. I am using mullvad as the wireguard service, if that matters.

I am getting NO handshake to wireguard, and no internet when it's attempting.

I looked at a million other threads, I've been trying for about a week to figure it out on my own and now it's time to phone a friend.

Here's my firewall and network configs:

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 'fdc8:7143:884f::/48'

config device
        option name 'br-lan'
        option type 'bridge'
        list ports 'eth0'

config interface 'lan'
        option device 'br-lan'
        option proto 'static'
        option netmask '255.255.255.0'
        option ip6assign '60'
        option ipaddr '192.168.2.1'
        option gateway '192.168.3.1'

config interface 'wan'
        option device 'eth1'
        option proto 'dhcp'

config interface 'wan6'
        option device '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 '3 4 0'

config interface 'WGINTERFACE'
        option proto 'wireguard'
        option private_key 'REDACTED PRIVATE KEY'
        option listen_port '51820'
        list addresses '10.68.128.116/32'
        list addresses 'fc00:bbbb:bbbb:bb01::5:8073/128'
        option force_link '1'

config wireguard_WGINTERFACE
        option description 'Mullvad Server #redacted'
        option public_key 'REDACTED PUBLIC KEY FOR MULLVAD SERVER'
        list allowed_ips '0.0.0.0/0'
        list allowed_ips '::0/0'
        option route_allowed_ips '1'
        option endpoint_host '193.27.13.114'
        option endpoint_port '51820'
        option persistent_keepalive '25'

config route
        option interface 'WGINTERFACE'
        option target '0.0.0.0'
        option netmask '0.0.0.0'

root@OpenWrt:~# cat /etc/config/firewall

config defaults
        option input 'ACCEPT'
        option output 'ACCEPT'
        option forward 'REJECT'
        option synflood_protect '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 mtu_fix '1'

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 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 '0'

config include
        option path '/etc/firewall.user'

config zone
        option name 'WGZONE'
        option input 'REJECT'
        option output 'ACCEPT'
        option forward 'REJECT'
        option masq '1'
        option mtu_fix '1'
        list network 'WGINTERFACE'

config forwarding
        option src 'lan'
        option dest 'WGZONE'

config rule
        option name 'WG'
        list proto 'udp'
        option src 'wan'
        option dest_port '51820'
        option target 'ACCEPT'

config forwarding
        option src 'lan'
        option dest 'wan'
2

What is make & model of openwrt router?
What is reported in Luci -> Status -> Wireguard status ?

Some openwrt routers suffer from a race condition where the time is wrong (behind). This prevents the wireguard interface from 'receiving' data.

https://openwrt.org/docs/guide-user/services/vpn/wireguard/extras#race_conditions
0timefix

I have an openwrt wiregard client routers (19.07.07 & 21.02.0) behind an ISP facing LEDE 17 router, and it works fine provided the VPN provider does not expire the keys I am using! I'm not with Mulvad.

2 Likes
3

Thanks for the reply Bill,

The make and model of my OpenWRT router is a GL-iNet B1300, the Convexa B. I had trouble with the modded OpenWRT they had on the router so flashed vanilla openwrt, only to have the same issues.

I had heard time was important so read I should be syncing time to on every fresh boot, but that doesn't help anything connect.

This is what my wireguard status page looks like.

Capture
Capture774×478 17.6 KB

4

Apologies, forgot to include the picture and it has now been edited in.

5
  • Specify no listen port on the client side.
  • Remove the redundant port opening.
  • Remove the redundant static route.
  • Clear the gateway on the LAN interface.
1 Like
6

I believe that I completed your suggestions, I am very new to this so please forgive if I've botched something.

See below for updated network and firewall;

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 'fd92:e7b8:49a4::/48'

config device
        option name 'br-lan'
        option type 'bridge'
        list ports 'eth0'

config interface 'lan'
        option device 'br-lan'
        option proto 'static'
        option netmask '255.255.255.0'
        option ip6assign '60'
        option ipaddr '192.168.2.1'

config interface 'wan'
        option device 'eth1'
        option proto 'dhcp'

config interface 'wan6'
        option device '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 '3 4 0'

config interface 'WGINTERFACE'
        option proto 'wireguard'
        option force_link '1'
        option private_key 'redacted private key given by mullvad'
        list addresses '10.67.146.38/32'
        list addresses 'fc00:bbbb:bbbb:bb01::4:9225/128'

config wireguard_WGINTERFACE
        option description 'Server name'
        option public_key 'redacted server key'
        list allowed_ips '0.0.0.0/0'
        list allowed_ips '::0/0'
        option route_allowed_ips '1'
        option endpoint_host '193.27.13.114'
        option endpoint_port '51820'
        option persistent_keepalive '25'

root@OpenWrt:~# cat /etc/config/firewall

config defaults
        option input 'ACCEPT'
        option output 'ACCEPT'
        option forward 'REJECT'
        option synflood_protect '1'

config zone
        option name 'lan'
        option input 'ACCEPT'
        option output 'ACCEPT'
        option forward 'ACCEPT'
        list network 'lan'
        list network 'WGINTERFACE'

config zone
        option name 'wan'
        list network 'wan'
        list network 'wan6'
        option input 'REJECT'
        option output 'ACCEPT'
        option forward 'REJECT'
        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 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'

config include
        option path '/etc/firewall.user'

config zone
        option name 'WGZONE'
        option input 'REJECT'
        option output 'ACCEPT'
        option forward 'REJECT'
        option masq '1'
        option mtu_fix '1'
        list network 'WGINTERFACE'

config forwarding
        option src 'lan'
        option dest 'WGZONE'

I also did the local startup code that bill suggested with no success.

1 Like
7

Try making WGINTERFACE part of the WAN zone.

1 Like
8

Changed to WAN zone, rebooted a few times, still doesn't handshake. :frowning:

9

fwiw, have you tried connecting to a different Mulvad peer?

2 Likes
10

I'm ashamed to say that I neurotically tried at least a dozen different Mullvad peers in a desperate attempt to understand why my stuff won't work.

11

Is it possible to configure the openwrt router to connect direct to your ISP router (bridge mode)?

ie. temporarily bypass the Netgear router?

I presume there is no issues connecting to Mulvad using any other device (eg. phone, laptop) running wireguard client connected to your Netgear router.

2 Likes
12

Yes, wireguard successfully connects if I use the PC directly.

I couldn't figure out how to get my device to get any internet at all, even without wireguard while connected to the bridge. I did discover the bridge had a mullvad frowned upon IP of 192.168.0.1, which I changed to a non conflicting address.

I did more digging and here is some new information that may help:

My Nighthawk gives my Openwrt an IP, which I have locked to a static 192.168.3.2, AND also put that into the DMZ zone of my nighthawk. None of this seems to help my OpenWRT handshake with wireguard.

I don't know what to do.

13

fwiw, I don't know if this solution posted 3 years ago on reddit is of any help. It may be out of date.
https://www.reddit.com/r/openwrt/comments/a8zdsc/trouble_getting_mullvad_wireguard_vpn_setup_on_my/

Peers section; the port needs to match the “multihop” port in the list of Wireguard servers on Mullvad’s site.

When you tested with your Windows PC, were you using Mulvad's own app, or importing the downloaded config into the Wireguard app for Windows?
https://www.wireguard.com/install/?downloadwindowsprealpha=1

2 Likes
14

I tried the solution on reddit to no success.

As far as the Windows PC, I can connect to the same server using the Mullvad App, AND I can even connect using the same exact Config that's not handshaking on the router - using the wireguard app on my PC.

15

A bit of a long shot:

I don't think it makes any difference, but can you remove the above zone forwarding entry for LAN to WAN, so it matches what is displayed on mullvad wiki.

https://mullvad.net/en/help/running-wireguard-router/

0mullvad
0mullvad754×255 27.8 KB

There may also be an error on the mullvad wiki page with regards to the 'wan' interface settings - see above. The error shouldn't affect the wireguard interface though.

16

I tested the mullvad config info you PMed to me and can confirm it works on my IPQ4018 based Linksys EA6350v3 running 21.02.0-rc3, with its WAN port wired to LAN port of my ISP facing HH5A modem-router running LEDE 17.01.6. I've PMed the results to you.

update: added reference to using WAN port

17

How is the OpenWrt router connected to the upstream router? Are you using the WAN port on the OpenWrt router to connect to a LAN port on the Nighthawk?

1 Like
18

Lan port from nighthawk to WAN on OpenWRT.

I got the OpenWRT box connected directly to my ISP's box just to rule out the Netgear Nighthawk causing problems. I then fully reset OpenWRT and started from scratch. Internet functioned before turning on Wireguard, internet stops functioning and no handshake while attempting wireguard. Verified credentials and tried with two new configs just to be certain. No handshake

19

Can you pst your latest config files (network and firewall)? Looking at your earlier ones, the network file looks good, but I see that the WGINTERFACE network is actually connected to 2 zones. It should be in only one zone... either WAN or a dedicated zone for WG, masquerading should be enabled.

EDIT: just noticed that you have a static route defined. This should be removed.... best thing though is too see the latest version of the files before recommending any changes.

1 Like
20

Here are the latest config files, as I did a completely clean wipe of the box and started fresh with an instructional from bill888.

I have internet functioning fine until I attempt to connect the wireguard interface, and then I lose internet, and no handshake occurs. If it helps, I also get 100% packet loss when wireguard is set up.

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 'fdad:7e63:2e4b::/48'

config device
        option name 'br-lan'
        option type 'bridge'
        list ports 'eth0'

config interface 'lan'
        option device 'br-lan'
        option proto 'static'
        option netmask '255.255.255.0'
        option ip6assign '60'
        option ipaddr '192.168.2.1'
        list dns '193.138.218.74'

config interface 'wan'
        option proto 'dhcp'
        option device 'eth1'
        option hostname '*'

config interface 'wan6'
        option device 'eth1'
        option proto 'dhcpv6'
        option auto '0'
        option reqaddress 'try'
        option reqprefix 'auto'

config switch
        option name 'switch0'
        option reset '1'
        option enable_vlan '1'

config switch_vlan
        option device 'switch0'
        option vlan '1'
        option ports '3 4 0'

config interface 'WGINTERFACE'
        option proto 'wireguard'
        option force_link '1'
        option private_key 'redacted'
        list addresses '10.68.164.94/32'
        option listen_port '51280'

config wireguard_WGINTERFACE
        list allowed_ips '0.0.0.0/0'
        list allowed_ips '::0/0'
        option route_allowed_ips '1'
        option persistent_keepalive '25'
        option public_key 'redacted'
        option endpoint_host '193.27.13.130'
        option description '145'
        option endpoint_port '51280'

config defaults
        option input 'ACCEPT'
        option output 'ACCEPT'
        option forward 'REJECT'
        option synflood_protect '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'

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 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'

config include
        option path '/etc/firewall.user'

config zone
        option name 'WGZONE'
        option input 'REJECT'
        option output 'ACCEPT'
        option forward 'REJECT'
        option masq '1'
        option mtu_fix '1'
        list network 'WGINTERFACE'

config forwarding
        option src 'lan'
        option dest 'wan'