TCP_TRAFFIC_PORT=5015
PROXY_PORT=443

_apply_outbound_rules() {
    # Forward outgoing packets through the proxy port
    sudo iptables -t nat
        -I OUTPUT 1
        -p tcp --destination-port $TCP_TRAFFIC_PORT
        -j DNAT --to-destination :$PROXY_PORT

    # Send packets to 5015 port after forwarding (this is likely the rule to fix)
    sudo iptables -t nat
        -I POSTROUTING 1
        -p tcp --destination-port $PROXY_PORT
        -j SNAT --to-source :$TCP_TRAFFIC_PORT
}

apply_outbound_rules