On https://myrouter/firewall_rules.php the router is setup to pass
everything, but when trying to connect a OpenVPN client over m0n0wall
to a remote OpenVPN server (UDP 1194) only one computer on the network
is able to connect.
If I swap the m0n0wall router out for a cheap home router that does
full cone NAT then all devices can connect to the OpenVPN server.
What do I have to do to the NAT configuration to be able to
connect several OpenVPN (UDP 1194) clients over the m0n0wall
router to a remote OpenVPN server?
The router (and NAT) configuration:
M0n0wall 1.32 embedded
Services: Proxy ARP - No entries
Firewall: NAT: Inbound - No entries
Firewall: NAT: Server NAT - No entries
Firewall: NAT: 1:1 - No entries
Firewall: NAT: Outbound - ...
X 'Enable advanced outbound NAT'
Interface Source Destination Target
WAN 192.168.1.0/24 * * (no portmap)
With this config I can connect one OpenVPN device, but the others
fail to connect. There are no other problems, NAT or otherwise.