Remotely connect to LAN via WireGuard on Mango

ueue · 2021-03-28T02:37:53.341Z

I should add my Mango is behind an enterprise firewall (Palo Alto). I can connect to to the wireguard server and the admin site on 192.168.8.1 on ports 80/443. I’m assuming all the wireguard communication is tunneled through one port. I my case 51280. If not, the Palo Alto could be blocking it, as I know it blocks 3389.

ueue · 2021-03-28T03:46:08.710Z

alzhao,

Is setting “Allow Access Local Network” on an automation of the instructions below?

https://docs.gl-inet.com/en/3/app/wireguard/#visit-clients-lan-subnet

alzhao · 2021-03-28T14:12:47.032Z

I think so. I need to test the most recent snapshot to make sure.

ueue · 2021-03-29T16:32:57.186Z

I updated to 3.201 and am having the same issue.

ueue · 2021-03-30T13:43:08.338Z

alzhao
Are you able to reproduce this issue?

Riho-shuu · 2021-03-31T03:51:40.241Z

Hi ueue,

Could you show me the /etc/config/firewall?

ueue · 2021-04-01T13:55:46.858Z

root@GL-MT300N-V2:~# cat /etc/config/firewall 

config defaults
	option syn_flood '1'
	option input 'ACCEPT'
	option output 'ACCEPT'
	option forward 'REJECT'
	option flow_offloading '1'
	option flow_offloading_hw '1'

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

config zone
	option name 'wan'
	option input 'REJECT'
	option output 'ACCEPT'
	option forward 'REJECT'
	option masq '1'
	option mtu_fix '1'
	option network 'wan wan6'

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'
	option reload '1'

config include 'glfw'
	option type 'script'
	option path '/usr/bin/glfw.sh'
	option reload '1'

config zone 'guestzone'
	option name 'guestzone'
	option network 'guest'
	option forward 'REJECT'
	option output 'ACCEPT'
	option input 'REJECT'

config forwarding 'guestzone_fwd'
	option src 'guestzone'
	option dest 'wan'

config rule 'guestzone_dhcp'
	option name 'guestzone_DHCP'
	option src 'guestzone'
	option target 'ACCEPT'
	option proto 'udp'
	option dest_port '67-68'

config rule 'guestzone_dns'
	option name 'guestzone_DNS'
	option src 'guestzone'
	option target 'ACCEPT'
	option proto 'tcp udp'
	option dest_port '53'

config rule 'sambasharewan'
	option src 'wan'
	option dest_port '137 138 139 445'
	option dest_proto 'tcpudp'
	option target 'DROP'

config rule 'sambasharelan'
	option src 'lan'
	option dest_port '137 138 139 445'
	option dest_proto 'tcpudp'
	option target 'ACCEPT'

config rule 'AllowWireguard'
	option name 'Allow-Wireguard'
	option target 'ACCEPT'
	option src 'wan'
	option proto 'udp tcp'
	option family 'ipv4'
	option dest_port '51820'

config zone 'wireguard'
	option name 'wireguard'
	option forward 'DROP'
	option output 'ACCEPT'
	option masq '1'
	option mtu_fix '1'
	option device 'wg0'
	option masq6 '1'
	option input 'ACCEPT'

config forwarding 'wireguard_wan'
	option src 'wireguard'
	option dest 'wan'

config forwarding 'wireguard_lan'
	option src 'wireguard'
	option dest 'lan'
	option enabled '1'

config forwarding 'lan_wireguard'
	option src 'lan'
	option dest 'wireguard'

config forwarding 'guest_wireguard'
	option src 'guestzone'
	option dest 'wireguard'

config forwarding 'wireguard_guest'
	option src 'wireguard'
	option dest 'guestzone'

config redirect
	option target 'DNAT'
	option name 'Rad-RDP'
	option dest 'lan'
	option proto 'tcp udp'
	option dest_ip '192.168.8.11'
	option dest_port '3389'
	option enabled '1'
	option gl '1'
	option src_dport '3389'
	option src 'wireguard'

config include 'gls2s'
	option type 'script'
	option path '/var/etc/gls2s.include'
	option reload '1'

config include 'glqos'
	option type 'script'
	option path '/usr/sbin/glqos.sh'
	option reload '1'

ueue · 2021-04-01T14:06:46.855Z

I’m using beta 3.201

ueue · 2021-04-02T20:56:51.588Z

Currently checking out

OpenWrt Forum – 24 Mar 20

Wireguard access to LAN behind Server Working

Managed to get client to access LAN behind server using wireguard. Have I been too complicated? Is this secure or have I opened up too much on the Firewall and Interfaces. Setup of server is Openwrt 19.07.2 on BT home hub 5a behind a Virgin media...

alzhao · 2021-04-03T02:26:04.144Z

@Riho-shuu is checking this issue and hopeful he can help.

blancmange · 2021-04-03T06:06:30.766Z

@ueue I’m still on 3.105 and I think I’m able to do this, see how my firewall settings are different to yours, maybe try mine?

Screenshot 2021-04-03 0805491758×610 63.1 KB

ueue · 2021-04-03T21:33:33.949Z

@blancmange Thanks for the reply! The only difference I’m seeing is that for the wan zone you accept forwarding. Isn’t this circumventing the NAT? Feel free to correct me if I’ve misunderstood.

ueue · 2021-04-03T22:02:01.969Z

@blancmange In any case I rolled back to version 3.105 and tried your change. It didn’t work, so this is not the magic incantation (assuming I didn’t miss another difference). Following the KISS principle, I’m going to set up second mango (GL-MT300N-V2) that’s not behind our Palo Alto firewall and test.

ueue · 2021-04-03T22:05:03.043Z

@Riho-shuu Here’s hoping you can see what I’m missing.

Riho-shuu · 2021-04-06T01:49:32.566Z

My apology for the late response.

Your forwarding rule is correct, could we arrange a remote support?

agent_smith · 2021-04-06T21:14:45.489Z

ueue:

I have a new GL.iNET GL-MT300N-V2 and have setup WireGuard. I can access the router’s admin page on 192.168.8.1, but I can’t see anything else on 192.168.8.0/24. What am I missing?

I have the same problem on my GL devices. (AR300M/Slate) . So I am also interested in solution

ueue · 2021-04-09T12:49:56.363Z

@Riho-shuu I know that systems on the lan/wifi can connect via RDP, so here is a tcpdump of an attempt to use RDP across the wireguard connection. Here is the dump on wg0

image2502×326 73.7 KB

and from br-lan

image2494×206 43.9 KB

As you saw with ICMP, there is no return seen on either interface. Interestingly, there is more traffic seen on wg0.

Riho-shuu · 2021-04-16T02:25:31.029Z

So, ueue’s problem has been solved, his windows system has a second firewall client which caused the problem. May I learn about your problem?

ueue · 2021-04-16T13:21:58.142Z

@Riho-shuu @alzhao Thanks for the help!

T3Knical5urg3 · 2022-02-09T05:14:24.048Z

Sorry to revive an old thread but I am having a similar issue without a similar resolution.

I think I am having a similar problem and I don’t think it is a client side firewall since the “client” in this case would be the router itself (I am trying to access the usb storage I have attached to the client gli.net router). Any suggesting on other settings beyond what is discussed here that may be the issue.

> 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'
>         option output 'ACCEPT'
>         option masq '1'
>         option mtu_fix '1'
>         option network 'wan wan6 tethering'
>         option input 'REJECT'
>         option forward 'REJECT'
> 
> config forwarding
>         option src 'lan'
>         option dest 'wan'
>         option enabled '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 include
>         option path '/etc/firewall.user'
>         option reload '1'
> 
> config include 'glfw'
>         option type 'script'
>         option path '/usr/bin/glfw.sh'
>         option reload '1'
> 
> config zone 'guestzone'
>         option name 'guestzone'
>         option network 'guest'
>         option forward 'REJECT'
>         option output 'ACCEPT'
>         option input 'REJECT'
> 
> config forwarding 'guestzone_fwd'
>         option src 'guestzone'
>         option dest 'wan'
>         option enabled '1'
> 
> config rule 'guestzone_dhcp'
>         option name 'guestzone_DHCP'
>         option src 'guestzone'
>         option target 'ACCEPT'
>         option proto 'udp'
>         option dest_port '67-68'
> 
> config rule 'guestzone_dns'
>         option name 'guestzone_DNS'
>         option src 'guestzone'
>         option target 'ACCEPT'
>         option proto 'tcp udp'
>         option dest_port '53'
> 
> config rule 'sambasharewan'
>         option src 'wan'
>         option dest_port '137 138 139 445'
>         option dest_proto 'tcpudp'
>         option target 'DROP'
> 
> config rule 'sambasharelan'
>         option src 'lan'
>         option dest_port '137 138 139 445'
>         option dest_proto 'tcpudp'
>         option target 'ACCEPT'
> 
> config include 'gls2s'
>         option type 'script'
>         option path '/var/etc/gls2s.include'
>         option reload '1'
> 
> config include 'glqos'
>         option type 'script'
>         option path '/usr/sbin/glqos.sh'
>         option reload '1'
> 
> config rule
>         option src 'wireguard'
>         option name 'Wireguard passthough'
>         option target 'ACCEPT'
>         option enabled '0'
> 
> config rule 'AllowWireguard'
>         option name 'Allow-Wireguard'
>         option target 'ACCEPT'
>         option src 'wan'
>         option proto 'udp tcp'
>         option family 'ipv4'
>         option dest_port '1771'
> 
> config zone 'wireguard'
>         option name 'wireguard'
>         option input 'ACCEPT'
>         option forward 'DROP'
>         option output 'ACCEPT'
>         option masq '1'
>         option mtu_fix '1'
>         option device 'wg0'
>         option masq6 '1'
> 
> config forwarding 'wireguard_wan'
>         option src 'wireguard'
>         option dest 'wan'
> 
> config forwarding 'wireguard_lan'
>         option src 'wireguard'
>         option dest 'lan'
> 
> config forwarding 'lan_wireguard'
>         option src 'lan'
>         option dest 'wireguard'
> 
> config forwarding 'guest_wireguard'
>         option src 'guestzone'
>         option dest 'wireguard'
> 
> config forwarding 'wireguard_guest'
>         option src 'wireguard'
>         option dest 'guestzone'