I am using a Netgear LB2120 3g/4g modem router. Have port forwarded and it works a treat to RDC into remote computer from home. This only worked after having business sim card and had GPTEXB3 codes applied and using dynamic DNS to keep IP address updated. Unfortunatley it will not connect when same computer/tablet/laptop is connected via built in sim card or using mobile phone hotspot. Why is this? Does it need other special codes on business sim card? Thanks.
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Most mobile Broadband services don't have a public IP address for the Dynamic DNS service to update. They have carrier grade NAT, the WAN address of the mobile device is behind a carrier NAT.Only some business broadband services have a public IP address. You will need another business SIM with same codes.
Do the other mobile sim devices have GPTEXB3 as well? Wondering whether it could be being blocked by the netgear because the incoming connection is CGNAT'ED
Does the netgear respond to pings? If so, can you ping and traceroute the IP from both your home computer and the mobile SIM?
Big-td, How did you go?
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