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faq:dyndns [2015/07/20 15:29] – fachetfaq: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. +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 similiar 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: 
-• **Static** means the IP address never changes as long as you stay with the same provider or same server. +   * **Static** means the IP address never changes as long as you stay with the same provider or same server. (Fixed IP) 
-• **Dynamic** means the IP address can change from time-to-time. +  * **Dynamic** means the IP address can change from time-to-time. 
-• **Public** means the IP address can be visited from any computer in the world. +vs. 
-• **Private** means the IP address can only be used by those on the same network. Private addresses are:  +  * **Public** means the IP address can be visited from any computer in the world. 
-o 10.0.0.0-10.255.255.255 +  * **Private** means the IP address can only be used by those on the same network.  
-o 172.16.0.0-172.31.255.255 + 
-o 192.168.0.0-192.168.255.255+Private addresses are not routed an the ranges are:  
 +  * 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 operatior. +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 prive 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).
  

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faq/dyndns.1437406152.txt.gz · Last modified: 2015/07/20 15:29 by fachet