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faq:dyndns [2015/07/20 15:36] fachet |
faq:dyndns [2021/11/08 16:23] (current) schmitt |
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| - | ====== DynDNS Problems ====== | + | ====== DynDNS/Remote Access Problems ====== |
| - | A common problem with SIM cards is that the router can't be accessed even a service like DynDNS is used. | + | A common problem mobile networks is that depending on the SIM cards type the router can't be accessed even a service like //DynDNS// and //port forwarding// is used. |
| This problem has nothing todo with the router functionality because it is a general problem with IP networks. In most case the terms static(fixed)/dynamic are mixed up with public/private IP addresses. | This problem has nothing todo with the router functionality because it is a general problem with IP networks. In most case the terms static(fixed)/dynamic are mixed up with public/private IP addresses. | ||
| - | Most likely the SIM card has a //dynamic// but only a **private** IP address. | + | Most likely the SIM card has a //dynamic// but only a **private** IP address and it will not work. |
| - | For using //dyndns// or similar service you need a **public** IP address | + | For using //DynDNS// or //port forwarding// you need a **public** IP address. |
| - | The reason that //port forwarding// is not working is that the NetModule router is behing a second router of the mobile operator. Port forwarding in the NetModule router will not solve this because you also would need the port forwarding of the mobile operators router. | + | //Port forwarding// will not working because the NetModule router is behing a second router of the mobile operator. Port forwarding in the NetModule router will not solve this because you also would need the port forwarding of the mobile operators router. //DynDNS// will also not work because the NetModule will get a //private// IP which can't be accessed from the internet. |
| IP address types have two dimensions which are independent: | IP address types have two dimensions which are independent: | ||
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| vs. | vs. | ||
| * **Public** means the IP address can be visited from any computer in the world. | * **Public** means the IP address can be visited from any computer in the world. | ||
| - | * **Private** means the IP address can only be used by those on the same network. Private addresses are: | + | * **Private** means the IP address can only be used by those on the same network. |
| - | o 10.0.0.0-10.255.255.255 | + | |
| - | o 172.16.0.0-172.31.255.255 | + | Private addresses are not routed an the ranges are: |
| - | o 192.168.0.0-192.168.255.255 | + | * 10.0.0.0 - 10.255.255.255 |
| + | * 172.16.0.0 - 172.31.255.255 | ||
| + | * 192.168.0.0 - 192.168.255.255 | ||
| Please check if the IP address of the router in the mobile network is in the range of a **private** IP address: | Please check if the IP address of the router in the mobile network is in the range of a **private** IP address: | ||
| - | {{:faq:wwanaddress.jpg|}} | + | {{:faq:wwanaddress1.png|}} |
| + | |||
| + | If the router has an **private** IP address remote access with port forwarding will not work. If you need remote access you can use an external VPN Server like the Netmodule NB1600-R Wireline or CloudRouter. See: {{:configuration:the_m2m_cook_book.pdf|Setting up an OpenVPN Server}} and | ||
| + | {{:configuration:netmodule_remote_access_solutions.pdf|Remote access solutions}}. | ||
| Using services like //whatsmyip.com// will show you another address which is the address of the router of the mobile operator. | Using services like //whatsmyip.com// will show you another address which is the address of the router of the mobile operator. | ||
| - | This is the same situation like having a private DSL-Router (= operators router) at home which has a public and often dynamic (e.g. 79.4.3.2) IP. So local computers (= NetModule router) you can't reach them from the internet because they have a private IPs (e.g. 192.168.1.100). All local routers will report the same public IP if //whatsmyip// is used (here 79.4.3.2). But looking on the IP address of the computers it will show the private addresses (here 192.168.1.100) | + | This is the same situation like having a private DSL-Router (= operators router) at home which has a public and often dynamic (e.g. 79.4.3.2) IP. Local computers (= NetModule router) can't be reached from the Internet because they have a private IPs (e.g. 192.168.1.100). All local routers will report the same public IP if //whatsmyip// is used (79.4.3.2). But looking on the IP address of the computers it will show the private addresses (192.168.1.100). |