00:00 - Intro 00:51 - Theory and some diagrams 05:12 - Installing UFW, configuring NAT and firewall on Proxmox 10:46 - Configuring OPNSense 18:53 - Why brigde interfaces are "empty" 19:18 - IP + MAC method 21:54 - Outro

Edit before.rules file:

NAT

*nat :PREROUTING ACCEPT [0:0] :POSTROUTING ACCEPT [0:0] -F

Port Forwardings

-A PREROUTING -i vmbr0 -p tcp --dport 80 -j DNAT --to-destination 10.99.99.254 -A PREROUTING -i vmbr0 -p tcp --dport 443 -j DNAT --to-destination 10.99.99.254

Forward traffic through eth0 - Change to match you out-interface

-A POSTROUTING -s 10.99.99.0/24 -o vmbr0 -j MASQUERADE

COMMIT

EOF NAT

Run these commands after that: sysctl -p sysctl --system

ufw allow 22/tcp ufw allow 8006/tcp ufw enable systemctl enable ufw

ufw default allow outgoing ufw default allow forward

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