Hello @Drops ,

Welcome to our community.

According to Google Translate, it looks like you're unable to access your shared work files remotely on your NX510v 5G router, even though the same SIM card lets you access them when used via phone tethering. If there is any discrepancy, please describe it in English.

This is likely related to how your SIM card carrier handles network addressing. Here's what's probably happening and how to troubleshoot:

The most common cause: Your router may not have a public IP address from your carrier. When you use phone tethering, your phone typically gets a public IP, allowing direct remote connections. However, when the SIM is in the router, the carrier may place it behind their own NAT (Network Address Translation), which blocks incoming remote access connections.

Please follow these troubleshooting steps:

1. Check if your router has a public IP address:
   • Log into your router at http://tplinkmodem.net
   • Go to Advanced > Status > Internet section
   • Look at the IPv4 Address shown there
   • Check if this is a public IP address (you can search online "is [your IP] a public IP" to verify)

2. If it's NOT a public IP address: This confirms the cause. Your SIM card carrier has another NAT product on their side, which blocks remote access and port forwarding. You'll need to contact your SIM card carrier and ask them to assign a public IP address to your SIM card/account.

3. If it IS a public IP address: You may need to configure port forwarding on your router to allow access to your work file server. You'll need to know which ports your work file sharing service uses (contact your IT department for this information), then set up Virtual Servers under Advanced > NAT Forwarding.