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** '''NOTE 2''': furthermore, it should be noted that not all SIM cards support this functionality. Static or Dynamic Public IP addresses (obtained through APN) are a paid service and setting any APN value for a SIM card that doesn't support this service will most likely result in losing your data connection. If this is the case, it can be fixed by simply deleting the APN, but it also means that remote access through WAN IP will most likely not work on your SIM card.
 
** '''NOTE 2''': furthermore, it should be noted that not all SIM cards support this functionality. Static or Dynamic Public IP addresses (obtained through APN) are a paid service and setting any APN value for a SIM card that doesn't support this service will most likely result in losing your data connection. If this is the case, it can be fixed by simply deleting the APN, but it also means that remote access through WAN IP will most likely not work on your SIM card.
 
** '''NOTE 3''': in some cases the SIM card doesn't require an APN in order to obtain a Public IP address. If that is the case for you, simply check what your router's WAN IP address is - if it's already a Public IP address, then you don't need to set an APN. The easiest way to find what your WAN IP address is to log in to the router's WebUI and check the '''WAN''' widget in the '''Overview''' page. The WAN widget will be on the right side of the page, second widget from the top:
 
** '''NOTE 3''': in some cases the SIM card doesn't require an APN in order to obtain a Public IP address. If that is the case for you, simply check what your router's WAN IP address is - if it's already a Public IP address, then you don't need to set an APN. The easiest way to find what your WAN IP address is to log in to the router's WebUI and check the '''WAN''' widget in the '''Overview''' page. The WAN widget will be on the right side of the page, second widget from the top:
 
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[[File:WANpublic.png|alt=|border|center|frameless|660x660px]]
[[File:Private vs public ip.png|1150px]]
      
===Step 3: Configure Port Forwarding===
 
===Step 3: Configure Port Forwarding===

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