Enable Masquerade to allow port forwarding sudo vi /etc/ufw/before.rules For SNMP Trap forwarding, add the following lines at the top before the *filter section *nat :PREROUTING ACCEPT [0:0] -A PREROUTING -p udp --dport 162 -j REDIRECT --to-port 10162 COMMIT Apply the firewall changes sudo ufw allow in 162/udp sudo ufw allow in 10162/udp sudo ufw reload