Basically, your tech+ M2M SIM cards cannot be accessed remotely.
Your tech+ M2M SIM cards are dynamically assigned private IP addresses that are not accessible via the internet. For outgoing traffic we use carrier-grade NAT. If you still need remote access to your devices, we can offer you the additional services IPsec tunnel, private APN and public IP addresses. These services are subject to a charge and can be requested from your contact in our sales team if you are interested.