Every Client on VPN but one

MCrockett · January 20, 2024, 6:01pm

I'm very new, but following a tutorial I managed to get a VPN working with WireGuard for my whole home network. I've also installed PBR because I'm trying to exclude my work computer from the VPN. I'm very unsure of myself and the settings I've entered but I think because the VPN is whole network, PBR doesn't seem to be making any difference. Should I create a new interface to accommodate the non-vpn client? What other settings should I implement? Any help?

/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 'fd29:bc64:9b1e::/48'
	option packet_steering '1'

config device
	option name 'br-lan'
	option type 'bridge'
	list ports 'lan1'
	list ports 'lan2'
	list ports 'lan3'
	list ports 'lan4'

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

config interface 'wan'
	option device 'wan'
	option proto 'dhcp'
	option peerdns '0'

config interface 'wan6'
	option device 'wan'
	option proto 'dhcpv6'

config interface 'WGINTERFACE'
	option proto 'wireguard'
	list addresses '...'
	option private_key '...'
	option force_link '1'

config wireguard_WGINTERFACE
	option public_key '...'
	list allowed_ips '0.0.0.0/0'
	option route_allowed_ips '1'
	option endpoint_host '...'
	option endpoint_port '51820'

/etc/config/firewall

config defaults
	option input 'REJECT'
	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'

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

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

config include 'pbr'
	option fw4_compatible '1'
	option type 'script'
	option path '/usr/share/pbr/pbr.firewall.include'

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

pavelgl · January 20, 2024, 8:37pm

Better set a metric for the wan interface, and if there are no DNS servers set in /etc/config/dhcp, I don't know how this even works.

You should only need one policy:

config policy
        option name 'My_work_PC'
        option interface 'wan'
        option src_addr 'work_PC_IP' # or option src_addr 'work_PC_MAC'

MCrockett · January 21, 2024, 1:15am

Hi @pavelgl. Your response has inspired me to recheck my PBR settings. I had the IP in the wrong place. Once I changed it around everything started working. For any future visitors to this thread, I'm using a D-Link DIR-882 A1 router.

This is my policy based route:

I also made sure to give my work computer a static IP:

And I had to add both WAN and the WireGuard VPN to the firewall:

It's working great now. Thank you!

system · January 31, 2024, 1:15am

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